SCHEDULE 14A INFORMATION
           Proxy Statement Pursuant to Section 14(a) of the Securities
                              Exchange Act of 1934

Filed by the Registrant |_|
Filed by a Party other than the Registrant |X|

Check the appropriate box:

|_|  Preliminary Proxy Statement         |_|  Confidential, for Use of the
|_|  Definitive Proxy Statement               Commission Only (as permitted by
|X|  Definitive Additional Materials          Rule 14a-6(e)(2))
|_|  Soliciting Material Pursuant to
     Rule 14a-11(c) or Rule 14a-12


          PROMETHEUS INCOME PARTNERS, a California limited partnership
                (Name of Registrant as Specified in Its Charter)

           PROMETHEUS DEVELOPMENT CO., INC., a California corporation
    (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)


Payment of Filing Fee (Check the appropriate box):

|X|   No fee required.

|_|   Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

      (1)   Title of each class of securities to which transaction applies:


      (2)   Aggregate number of securities to which transaction applies:


      (3)   Per unit price or other underlying value of transaction computed
            pursuant to Exchange Act Rule 0-11 (set forth the amount on which
            the filing fee is calculated and state how it was determined):



      (4)   Proposed maximum aggregate value of transaction:


      (5)   Total Fee Paid:


|_|   Fee paid previously with preliminary materials:

|_|   Check box if any part of the fee is offset as provided by Exchange Act
      Rule 0-11(a)(2) and identify the filing for which the offsetting fee was
      paid previously. Identify the previous filing by registration statement
      number, or the form or schedule and the date of its filing.

(1)   Amount previously paid:
(2)   Form, Schedule or Registration Statement no.:
(3)   Filing Party:
(4)   Date Filed:





                           PROMETHEUS INCOME PARTNERS
                               350 Bridge Parkway
                           Redwood City, CA 94065-1517
                                 (650) 596-5393

July 22, 2002

To the Limited Partners:


We wanted to take this last opportunity prior to our meeting on Wednesday to
update you. We previously communicated to you that we were in discussions with
Aspen Square Management, Inc. regarding a possible acquisition of the
Partnership or its Properties. While we have made every attempt to engage Aspen
in a constructive manner, these attempts have not resulted in any kind of
commitment by Aspen to consummate a transaction on terms more favorable to the
limited partners than the merger. We do not believe Aspen has acted as we
believe a serious buyer would act in these matters and, as such, do not believe
the possibility of obtaining a transaction that may be economically preferable
to the proposed merger outweighs the risks to the limited partners of foregoing
the merger at this time. Therefore, YOUR GENERAL PARTNER AND ITS AFFILIATED
PARTIES CONTINUE TO RECOMMEND YOU VOTE FOR THE MERGER.

How did we get here? On June 24, 2002, Aspen delivered a non-binding proposal
regarding a possible purchase of the Partnership's properties. Several aspects
of this proposal, including the actual purchase price being proposed, were
unclear and subject to interpretation. However, we believed it was important to
pursue this opportunity diligently with Aspen in order to identify whether there
might be a better opportunity available to the limited partners. We have
addressed the shortcomings of Aspen's original approach in our letters to you
dated July 3, 2002 and July 12, 2002.

We have continued to engage Aspen with respect to matters we believed to be
critical to evaluating any alternative to the merger. We provided Aspen with
materials responsive to their initial diligence requests, and they provided
certain information responsive to our requests in order to evaluate their
interest and capabilities. In fact, on July 18, 2002, we believed we had reached
agreement on a possible framework for moving forward with Aspen with completion
of their diligence. This framework contemplated, among other things, an
acquisition of the limited partnership units at a price of $1,859, but provided
no binding obligation at such price on either side. We had expressed our
willingness to postpone the meeting to be held on July 24 in order to allow
Aspen to complete its diligence, which they would agree to complete by August 1,
2002. Despite our expectation that an agreement providing for the conduct by
Aspen of diligence and the postponement of the meeting, the form of which we
believed to have been negotiated during the course of the day on the 19th, we
were informed that the principals involved had left the office early without
signing that agreement. We extended the previously


                                      -2-



agreed upon date for them to do so until the 20th, and still no executed copy
was forthcoming. We believed that Aspen's neglect in addressing this transaction
further of an absence on the part of Aspen of a seriousness and sense of
priority in acquiring the Partnership. Therefore, we advised Aspen by letter
this morning that we would not be pursuing a transaction with them any further,
despite their purported attempts to resurrect the transaction.

Why did we cease discussions with Aspen? Since we first began speaking with
them, Aspen approached the possibility of a transaction in a manner that we do
not believe reflected a true interest in completing a transaction, despite
having been told by us on several occasions that time was of the essence. As set
forth in our July 12 letter, we do not believe the chance of a transaction
involving greater proceeds to the limited partners justifies the attendant risks
to the limited partners in waiting for such an opportunity to materialize. In
particular, you should consider the following:


          o   At no time has Aspen made a binding offer for the Properties or
      the units. All discussions with Aspen have been subject to their conduct
      of their due diligence of the properties (which they have been slow to
      commence and continue, despite being offered several opportunities to do
      so). As such, any agreement to proceed on such basis would, in essence,
      give Aspen an option to acquire the Partnership, without any firm
      obligation as to the price they would pay.



          o   Experts are professing grave uncertainties about economic
      conditions in general and capital markets in particular. Already, as
      reflected in our historical and proxy filings, these conditions have
      adversely impacted the value of the Partnership's properties. As these
      clouds continue to prevail, we do not believe we could justify continuing
      to subject the limited partners to these risks to pursue the mere
      possibility of obtaining a transaction that might yield a premium to the
      limited partners. This is particularly true because the merger presents an
      attractive liquidity opportunity that may not be available in the future.



          o   The merger presents an attractive liquidity opportunity that is
      free from any significant conditions and can be completed in a matter of
      days from this writing, but only if approved by the limited partners at
      the meeting to be held on July 24.


Information  you should  know.  You likely  have  received  correspondence  from
Everest  asking  you to  oppose  the  merger.  As we've  discussed  in our prior
letters,  we do not believe that Everest has been  forthright with you about the
facts. In any case,  their attempts to besmirch the Partnership and your General
Partner  with  wild  accusations  that


                                      -3-



are not grounded in the facts are an  unfortunate  attempt on their part to blur
the facts. Of course, we cannot know Everest's  motivations and criteria.  We do
know that prior to  commencing  its  solicitation  in  opposition to the merger,
Everest sought to have us acquire their units at a very substantial premium over
the merger  price,  a benefit that would not be  available to the other  limited
partners.  We were also advised by Aspen that  Everest had sought a  transaction
fee from Aspen for bringing the Properties to Aspen's attention.

In any case,  regardless  of its motives,  Everest may be willing to take on the
risks we have  identified  in  delaying  the  merger  in hopes  of  obtaining  a
higher-priced  deal at a later  date,  but we do not believe  that most  limited
partners would so opt. WE BELIEVE IT IS IMPORTANT  THAT THE LIMITED  PARTNERS BE
GIVEN THE  OPPORTUNITY  TO DECIDE THE  MATTER.  THEREFORE,  IN ORDER TO GIVE THE
LIMITED  PARTNERS THE  OPPORTUNITY TO EXPRESS THEIR WISHES,  THE MEETING WILL BE
HELD ON JULY 24 AS PLANNED.





If you would like to vote or change your vote please  call  MacKenzie  Partners,
Inc. at (800)  322-2885 for a ballot.  Votes can be submitted  via  facsimile to
MacKenzie Partners, Inc. at (212) 929-0308.


So that you may have a better understanding of the matters referred to above, we
include the following:



July 22, 2002
- -------------

o     The General Partner's response to Aspen's letter of July 22

o     The General Partner's letter rejecting Aspen's counter proposal letter



July 19, 2002
- -------------

o     Second  revision to the letter of intent  sent by the  General  Partner to
      Aspen

o     Hand  written  revisions  to the  letter  of  intent  sent by Aspen to the
      General Partner

o     First  revision  to the letter of intent  sent by the  General  Partner to
      Aspen


                                      -4-



July 18, 2002
- -------------

o     Original  letter of intent to Aspen,  Entry and  Indemnity  Agreement  and
      Sample Insurance Certificate on July 18, 2002 sent by the General Partner






On behalf of your General Partner,  I thank you for your reasoned  consideration
of this matter.





PROMETHEUS INCOME PARTNERS, a California
limited partnership

By:  PROMETHEUS DEVELOPMENT CO., INC., a
     California corporation, its General Partner

By:  /s/ John J. Murphy
    --------------------------------------
      John J. Murphy, Vice President


                                      -5-



                           Prometheus Income Partners

                               350 Bridge Parkway
                           Redwood City, CA 94065-1517
                                 (650) 596-5393


SENT VIA FACSIMILE (413) 788-9207


July 22, 2002

Mr. Jeffrey M. Strole
Aspen Square Management, Inc.
380 Union Street, Suite 300
West Springfield, Massachusetts 01089


Dear Jeff,

We received your letter of July 22, 2002, attached hereto. As we have
communicated to you in previous correspondence, we take our fiduciary
responsibilities seriously. It is for this very reason that we are making the
recommendation to the limited partners to move forward with the merger. As a
fiduciary, we believe that the current uncertain economic climate requires us to
continue to act in a manner where time is of the essence. Any deadlines
established by us were set with our fiduciary responsibilities in mind. We have
continually communicated to you verbally and in writing that time was of the
essence.

Regarding the timing of the letter of intent on Friday, July 19, 2002, I should
remind you that earlier in the day, you were not responsive to our attorney
Craig Seligman. As a result, I had to call and page you, Fred Anthony and John
Mnich in order to get Aspen to respond to our attorney. We also believe that any
buyer who was serious about purchasing properties would not have left the office
on Friday before finalizing a letter of intent for a major transaction after
arbitrarily changing the deadline date for its execution without at least a
telephone call. We found this extremely surprising since you claimed on
Thursday, July 18, 2002, in our telephone conversation that you wanted to start
your due diligence on Monday, July 22, 2002. Additionally, on July 18, 2002, in
order to expedite the due diligence process, I sent to you our standard Entry
and Indemnity Agreement. We did not received an executed copy of this agreement
from you.

During our discussion, we communicated to you the amount of records you were
requesting was voluminous and you agreed to come to our offices to review the
documents and determine which should be copied. We are very concerned about a
buyer who claims to understand litigation on construction defects but requests
to have all of the files copied and overnighted the same day (this was in direct
conflict with the letter of intent attached to your facsimile.) There are
literally thousands of pages of material


                                      -6-



relating to the construction defect litigation, some of which is in the
possession of the Partnership's counsel. The review of these numerous documents,
some of which are highly technical, could take a substantial period of time.
These documents are voluminous as they represent over five years of
correspondence, court filings, depositions, etc. some of which were part of a
global settlement as well as other related hardboard siding/construction defect
cases.

I trust this will explain our concerns on behalf of the Partnership.

Sincerely,



PROMETHEUS INCOME PARTNERS, a
California limited partnership

By:  PROMETHEUS DEVELOPMENT CO., INC., a
     California corporation, its general partner


By:  /s/ Vicki R. Mullins
    ---------------------------------------
     Vicki R. Mullins, Vice President


Original sent by overnight mail


                                      -7-



FACSIMILE SENT:  Jul-22-2002    02:41PM   FROM:  Aspen Square Management



Aspen Square Management, Inc.

380 Union Street, Suite 300
West Springfield, Massachusetts 01089
Phone: 413-781-0712
FAX 413-788-9207

July 22, 2002                                    Via Facsimile & Federal Express

Ms. Vicki R. Mullins
Vice President
Prometheus Income Partners
350 Bridge Parkway
Redwood City, CA 94065-1517

Re:     Timberleaf & Alderwood Apartments, Santa Clara, CA

Dear Ms. Mullins.

I am in receipt of your letter to my  attention  dated as of today.  We at Aspen
Square Management are both surprised & disappointed that you have elected not to
deal with us even though our offer is  significantly  higher than that put forth
by PIP Partners - General,  LLC/PIP Acquisition,  LLC ("PIP"). I would point out
that when  discussing  the principal  detriments to a transaction  with PIP, the
notice of meeting prepared by Prometheus and distributed to the limited partners
states,  "No  representative  unaffiliated with Prometheus  Development Co. (the
general  partner) has been retained to act solely on behalf of limited  partners
for the  purposes  of  negotiating  the terms of the merger.  Prometheus  Income
Partners,  PIP Partners and Prometheus  Development Co. are all under the common
control of Sanford Diller,  who is also the principal  beneficial owner of these
entities.  The interests of these entities are different from and in substantial
conflict  with  those  of the  unaffiliated  limited  partners.  Because  of the
relationship among Prometheus Development Co., PIP Partners and PIP Acquisition,
the  merger  and all of the  proposed  transactions  related  to the  merger  as
discussed  in this  document  are not the  product of arm's  length  negotiation
between  unaffiliated  parties. PIP Acquisition and PIP Partners are making this
offer  with a view to  ultimately  making a profit  and,  therefore,  there is a
conflict. between their desire to acquire your units at a relatively lower price
and your desire to sell your units at a relatively higher price."

We had hoped that your  fiduciary duty to the limited  partners would  supersede
your desire to see one of your affiliated  entities be the successful bidder for
these partnership units. We have done everything that you have asked of us as we
sought to proceed with this transaction.  Among other things, we offered a price
substantially  higher  than PIP;  at your  request,  we agreed to  purchase  the
partnership  interests as opposed to the properties;  and finally,  we agreed to
pay Prometheus  Development  Co., Inc. $1.5 million for its general  partnership
interest,  three  times  the  amount  being  paid to the  limited  partners  for
equivalent  interests,  even though no justification for said $1.5 million price
was ever offered.

Given  your  fiduciary  responsibility  to the  limited  partners,  we were very
surprised to receive your letter  informing us that our offer was  rejected.  We
were  particularly  disturbed  that  after  negotiating  the  letter  of  intent
extensively  with you and your counsel last Friday,  July 19, that you would fax
us a revised copy late on Friday


                                      -8-



the 19th and include an arbitrary  deadline for execution of Saturday,  July 20.
Had we known  that you would  make  Saturday  the  deadline,  we could  have had
someone  available  in our office to execute said letter or had the letter faxed
to one of our homes for  execution.  However,  we didn't  receive notice that we
were  expected to sign the letter on  Saturday  the 20th until we arrived in our
offices this morning,  Monday the 22nd. We think your actions in this regard are
unfair and  clearly  fail to  adequately  discharge  your  duties to the limited
partners.

We faxed to you a fully executed  letter of intent this morning and had expected
it to be accepted.  However,  as has been  evidenced by your conduct  throughout
this transaction,  you wish to make our purchase of the partnership interests as
difficult as possible.  You have  consistently  set arbitrary  deadlines with no
explanation.  In addition, you have asked for information related to our company
that we have never been  asked by a seller to  provide  before - even  though we
have been in  existence  for  nearly 50 years  and have done  transactions  much
larger than the one at issue.  Such conduct does not indicate that advancing the
interests  of the  limited  partners  is your  paramount  consideration  in this
transaction.

Therefore,  we ask that you reconsider your decision and properly discharge your
fiduciary duties to the limited partners. Please advise us of your decision.

I look forward to hearing from you.

Sincerely,


/s/ Jeffrey M. Strole
- ---------------------
Jeffrey M. Strole

cc: Craig Seligman, Esq.


                                      -9-



                           PROMETHEUS INCOME PARTNERS

                               350 Bridge Parkway
                           Redwood City, CA 94065-1517
                                 (650) 596-5393



July 22, 2002

Mr. Jeff Strole
Aspen Square Management, Inc.
380 Union Street, Suite 300
West Springfield, Massachusetts 01089

Dear Jeff:

This is to confirm that we did not receive your signed letter by July 20, 2002
at 12:00 noon California time. As we have consistently communicated to you from
the beginning, time was of the essence. Accordingly, your counter proposal of
July 22, 2002, is rejected.



                              PROMETHEUS INCOME PARTNERS

                              By:  Prometheus Development Co., Inc.,
                                   a California corporation, its general partner

                                 By: /s/ Vicki Mullins
                                     -----------------
                                 Name: Vicki Mullins
                                 Title: Vice President



cc: Craig Seligman





FACSIMILE SENT:  Jul-22-2002    08:44AM   FROM:  Aspen Square Management


                          ASPEN SQUARE MANAGEMENT, INC.
                                380 Union Street
                                    Suite 300
                           West Springfield, MA 01089
                              Phone (413) 781-0712
                               Fax (413) 781-1277

facsimile cover sheet

To:          Ms. Vicki Mullins

            Craig Seligman, Esq.

From;        Jeff Strole

No. of Pages (including cover page) - 19

Date:        7/22/02

Message:

Ms. Mullins:

Attached please find a fully executed copy of the July 19, 2002 letter of intent
related to Timberleaf & Alderwood Apartments. I will overnight the originals to
your attention.

As we begin our due diligence review, I would appreciate it if you could
overnight to me for delivery tomorrow copies of operating statements for the
properties for 1998, 1999, 2000, 2001 & YTD as well as any and all information
related to the construction defects and litigation at the properties (including
copies of the settlement agreements). This will help us to begin our due
diligence.

Thank you,

Jeff Strole


                                       __                                     11



FACSIMILE SENT:  Jul-22-2002    09:43AM   FROM:  Aspen Square Management


                           PROMETHEUS INCOME PARTNERS

                               350 Bridge Parkway
                           Redwood City, CA 94065-1517
                                 (650) 596-5393

July 19, 2002

Aspen Square Management, Inc.
380 Union Street, Suite 300
West Springfield, Massachusetts 01089

Ladies and Gentlemen:

      This letter sets forth the essential terms of your proposed due diligence
review ("Diligence Review") on the basis of which we are willing to continue to
consider your possible acquisition of Prometheus Income Partners, a California
limited partnership (the "Partnership"). Our understanding of your proposal is
embodied in the following:

      1. You (or an entity to be formed by you) would acquire (i) each of the
Partnership's issued and outstanding limited partnership units for $1,859 in
cash per unit and (ii) the general partner interest in the Partnership now held
by Prometheus Development Co., Inc. (the "General Partner") for $1,500,000 in
cash, in each case payable in full upon consummation of the acquisition of the
limited Partner's units and General Partner's interest, collectively referred to
as "Proposed Acquisition".

      2. Except as expressly set forth herein, you have proposed substantively
all of the terms included in the definitive Agreement and Plan of Merger (the
"Definitive Agreement") attached hereto as Exhibit A, with the following
modifications:

            (a) mutual covenants of cooperation to obtain the approval of
      Proposed Acquisition by the Partnership's limited partners (including
      preparation of proxy materials) and such other approvals (if any) as may
      be required to complete the transaction;

            (b) no closing condition in respect of financing, refinancing or
      assumption of existing mortgages;

            (c) mutual representations that no broker, finder's, agency or
      similar fees to be paid;

            (d) with your proposed contract for the Proposed Acquisition, you
      shall deposit $3,000,000 into escrow with a mutually acceptable escrow
      agent on mutually acceptable terms. If no Proposed Acquisition is
      consummated, the $3,000,000 will be disbursed to the Partnership unless
      the Proposed Acquisition was not consummated as a result of either a
      breach by the Partnership or the rejection of the Proposed Acquisition by
      the Partnership's limited partners, in which case it will be returned to
      you; and

            (e) the executed contract would be terminable by either party if the
      Proposed Acquisition has not been consummated on or prior to December 31,
      2002, other than as a result of a breach by such party.


                                       __                                     12



      3. You agree to commence at your expense your Diligence Review of the
Partnership and its properties promptly after execution of this letter. We agree
to reasonably provide to you and your representatives access to the properties,
books, records, documents, contracts and other records of the Partnership and
shall furnish you with copies of such documents and with such information with
respect to the affairs of the Partnership, as you reasonably deem necessary for
the purpose of conducting the Diligence Review. We will endeavor to make a
reasonable search to provide you with the records requested. It is agreed that
the items requested on Exhibit C hereto shall be made available to you, to the
extent that they are within our possession and control, except that (i) you
acknowledge that we are unable to provide you with employee's personnel files
and (ii) you and we shall agree in good faith to limit certain of such
information temporally, including, e.g., that bank statements, etc., need only
be made available for the previous three years. Because the records you are
requesting are so numerous, we are only obligated to make reasonable efforts to
assist your inspection. Upon your designating the records you wish copied, we
will send them to an outside service at your expense. You agree that you will
complete the Diligence Review not later than August 1, 2002 (the "Diligence
Cut-off Date").

      4. In consideration of the foregoing and of your previous representations
to us as to your ability to pay all cash pursuant to the Proposed Acquisition
with currently available liquid funds, we agree to postpone the taking of any
vote on the currently proposed merger until after the Diligence Cut-off Date.

      5. You acknowledge that (i) we will have to advise our limited partners
appropriately and from time to time regarding the matters set forth herein and
(ii) at any time prior to any written acceptance of your proposed offer (which
you agree to deliver prior to the Due Diligence Cut-off Date), the General
Partner has fiduciary duties to the Partnership and its limited partners in the
discharge of which it is obligated to consider alternatives that may be more
favorable to the limited partners. If on or prior to December 31, 2002 the
General Partner shall present and recommend to the limited partners any
transaction involving an acquisition of the limited partner units at a price in
excess of $1859 per unit in which the acquiror, directly or indirectly, is an
affiliate of the General Partner, PIP Partners - General, LLC, PIP Acquisition,
LLC, or is affiliated with or controlled by Sanford Diller and your proposal is
not accepted, the Partnership shall reimburse you for all reasonable
out-of-pocket costs incurred by you in conducting the Diligence Review up to an
aggregate maximum amount of $50,000.

      6. This letter supersedes all previous correspondence, discussions,
understandings and agreements between you and us or our respective officers,
directors, agents and representatives, provided that the letter agreement
regarding confidentiality and related matters attached hereto as Exhibit B shall
remain in full force and effect (and, for the avoidance of doubt, shall apply
with respect to the information provided in the course of the Diligence Review).

      Except for the express terms of paragraphs 3, 4 and 6 hereof, each of
which shall and hereby does constitute a binding agreement: it is expressly
understood that this letter is non-binding and is intended to include part of
the basic terms and conditions under which the Partnership may enter into a
formal agreement with Aspen for the Proposed Acquisition; this letter shall only
serve to form part of the basis for a possible agreement which must be agreed
upon and executed by all parties prior to having any binding effect; this
non-binding letter is not intended to be contractual in nature and neither party
shall be obligated to proceed in good faith, or by any other standard, to enter
into an agreement based upon the terms set forth above; and a binding agreement
will only exist when the agreement is executed by duly authorized
representatives from all parties. Additionally, the Partnership reserves the
right to negotiate and enter into a binding agreement with another party until a
mutually acceptable agreement is fully executed (subject to the last sentence of
paragraph 5 above.)


                                       __                                     13




      If the foregoing is in accordance with your understanding, please so
indicate by signing the enclosed copy of this letter in the space provided and
returning it to us on or prior to [INTERPOLATED WRITTEN MATERIAL: "12:00 noon
California time, July 22, 2002" inserted, "6:00 P.M. E.D.T., July 22, 2002"
deleted]. Please fax a signed copy to the attention of Vicki Mullins at (650)
596-5377 and send the original via overnight mail.

      THE PRECEDING PARAGRAPH INITIALED BY FRED ANTHONY OF ASPEN
      ----------------------------------------------------------



                              PROMETHEUS INCOME PARTNERS

                              By:  Prometheus Development Co., Inc.,
                                   a California corporation, its general partner

                                 By:  /s/ Vicki Mullins
                                     --------------------------
                                   Name: Vicki Mullins
                                   Title: Vice President

AGREED AND ACCEPTED:

ASPEN SQUARE MANAGEMENT, INC.


By:    /s/ Fred Anthony
      --------------------------

Name:  Fred Anthony
Title:  Vice President


                                       __                                     14



FACSIMILE SENT:  Jul-22-2002    08:44AM   FROM:  Aspen Square Management

                                                                       EXHIBIT A




                AMENDED AND RESTATED AGREEMENT AND PLAN OF MERGER

      This Amended and Restated  Agreement and Plan of Merger (this "Agreement")
is entered into as of May 22, 2002, by and among Prometheus  Income Partners,  a
California limited partnership (the "Partnership"), PIP Partners - General, LLC,
a California  limited  liability  company ("PIP General"),  and PIP Acquisition,
LLC, a California limited liability company and a wholly-owned subsidiary of PIP
General ("Acquisition").

      WHEREAS,  the  parties  desire  to  merge  Acquisition  with  and into the
Partnership (the "Merger") on the terms and conditions hereinafter set forth and
in  accordance  with the  provisions of Sections  15678.1-.9  of the  California
Revised  Uniform  Limited  Partnership  Act, as amended (the "Act") and Sections
17550-17556 of the Beverly-Killea Limited Liability Company Act (the "LLC Act");

      WHEREAS, Acquisition has been formed for such purpose.

      WHEREAS,  the parties have entered into that certain Agreement and Plan of
Merger dated as of March 6, 2002 (the "Original Agreement"); and

      WHEREAS,  the  parties  have  reviewed  the  financial  statements  of the
Partnership  as of and for the quarter ended March 31, 2002 and based  thereupon
wish to increase  the merger  consideration  of $1,714 per limited  partner unit
provided for in the Original Agreement to $1,736 per unit.

      NOW  THEREFORE,  BE IT  RESOLVED,  that  in  consideration  of the  mutual
covenants  and  agreements   contained   herein  and  other  good  and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties agree, and the Original  Agreement is hereby amended and restated in its
entirety to read, as follows:


                                    ARTICLE I
                                 TERMS OF MERGER

      Acquisition  shall be merged with and into the  Partnership in a statutory
merger in  accordance  with the Act and the LLC Act on the terms and  subject to
the conditions set forth in this Agreement.





                                   ARTICLE II
                                EFFECT OF MERGER

      On the "Effective Date" (as defined below):

      (1)   Acquisition shall be merged with and into the Partnership;

      (2)   the Partnership shall possess all the rights, privileges, immunities
and franchises of Acquisition,  and all property,  real, personal and mixed, and
debts due on whatever account,  and every other interest  belonging to or due to
Acquisition (including,  but not limited to, liability for any fees or franchise
taxes due and owing to the  Secretary of State of California as of the Effective
Date)  shall be  deemed to be  transferred  to and  vested  in the  Partnership,
without further act, deed or transfer;

      (3)   the Partnership  shall thenceforth be responsible for and subject to
all of the debts,  liabilities and obligations of Acquisition in the same manner
as if the Partnership had itself incurred them;

      (4)   any claim,  existing  action,  or  proceeding  pending by or against
Acquisition may be prosecuted to judgment by the Partnership; and

      (5)   neither the rights of  creditors  nor any liens upon the property of
Acquisition shall be impaired by the Merger.

The  "Effective  Date"  shall  be the date  following  the  satisfaction  of the
conditions  set forth in Article VIII hereof on which a Certificate of Merger is
filed with the Secretary of State of the State of California in accordance  with
the Act and the LLC Act,  which  date  shall be not  greater  than  twenty  days
following the approval of the Merger by the limited  partners of the Partnership
(the "Limited Partners").


                                   ARTICLE III
                    MANNER AND BASIS OF CONVERTING INTERESTS

      As of the  Effective  Date, by virtue of the Merger and without any action
on the part of any party hereto:

      (1)   Each limited partner  interest in the  Partnership  (each, a "Unit")
outstanding  immediately  prior to the Effective  Date (other than any such Unit
held by PIP  General)  shall be  converted  into and shall  become  the right to
receive cash  (without  interest  thereon) in an amount equal to $1,736.00  (the
"Merger  Consideration") upon surrender of a duly executed letter of transmittal
by the holder of such Unit in form and substance reasonably  satisfactory to PIP
General. As of the Effective Date, each such Unit shall no longer be outstanding
and shall  automatically  be cancelled and retired and


                                       16



shall cease to exist, and the holder of such Unit shall cease to have any rights
with respect thereto, except the right to receive the Merger Consideration.

      (2)   As of the Effective Date, each member interest in Acquisition issued
and   outstanding  as  of  the  Effective  Date  shall  be  converted  into  one
newly-issued Unit.


                                   ARTICLE IV
                       CHARTER DOCUMENTS; GENERAL PARTNER

      (1)   The  Certificate  of  Limited  Partnership  and Second  Amended  and
Restated Limited Partnership  Agreement of the Partnership dated October 1, 1992
(the "Partnership Agreement"), each as in effect on the Effective Date, shall be
the  charter  documents  of the  Partnership  until  duly  amended or changed in
accordance with the Partnership Agreement and the Act.

      (2)   Subject  to  and  in  accordance  with  the  Partnership  Agreement,
Prometheus  Development  Co., Inc.  will continue as the general  partner of the
Partnership.


                                    ARTICLE V
                   PARTNERSHIP REPRESENTATIONS AND WARRANTIES

      The Partnership hereby represents and warrants that:

      (1)   The Partnership has been duly organized and is existing as a limited
partnership in good standing under the laws of the State of California with full
power and authority to own and lease its  properties and to conduct its business
as currently conducted.

      (2)   The  Partnership  has the power and authority to execute and deliver
this  Agreement,  to  consummate  the  transactions  contemplated  hereby and to
perform its obligations  under this Agreement.  The execution and delivery by it
of this Agreement, and the consummation of the transactions contemplated hereby,
have been duly authorized by all necessary action by the Partnership  other than
the  approval  of  Limited  Partners  holding  at least  50% of the  issued  and
outstanding Units. This Agreement (assuming the due authorization, execution and
delivery  hereof by the other parties hereto)  constitutes the legal,  valid and
binding obligation of the Partnership, enforceable against it in accordance with
the terms hereof.

      (3)   Other than as follows,  the execution,  delivery and  performance of
this Agreement and the  consummation of the  transactions  will not (i) conflict
with or  result  in a breach  or  violation  of any  terms or  provision  of, or
constitute a default under (with or without notice or passage of time, or both),
or otherwise  give any person a basis for  accelerated  or  increased  rights or
termination or  nonperformance  under, any indenture,


                                       17



mortgage,  deed of trust,  loan or credit  agreement,  lease,  license  or other
agreement  or  instrument  to which the  Partnership  is a party or by which the
Partnership or its assets is bound or affected,  (ii) result in the violation of
the  provisions  of the  formation  documents  of the  Partnership  or any legal
requirement  applicable to or binding upon the Partnership,  (iii) result in the
creation  or  imposition  of  any  lien  upon  any  property  or  asset  of  the
Partnership,  (iv)  require  the  consent  of any  person  to  the  transactions
contemplated hereby that has not heretofore been obtained other than the consent
of the Limited  Partners and of The Prudential  Insurance  Company of America or
(v)  otherwise  adversely  affect  the  contractual  or other  legal  rights  or
privileges of the Partnership:

                  (a)  Deed of Trust, Security Agreement and Fixture Filing with
            Assignment of Rents and Proceeds dated as of December 23, 1997, with
            respect to Alderwood; and

                  (b)  Deed of Trust, Security Agreement and Fixture Filing with
            Assignment of Rents and Proceeds dated as of December 23, 1997, with
            respect to Timberleaf.

      (4)   Other than as follows,  or as otherwise  disclosed in this Agreement
as of the date of this Agreement,  the Partnership has good and marketable title
to all of the Partnership's assets free and clear of all liens:

                  Mortgages  and  liens  not  yet due  and  payable,  covenants,
                  conditions and restrictions of record

      (5)   Other  than  the  hardboard  siding  litigation   discussed  in  the
Partnership's  Annual Report on Form 10-K/A for the year ended December 31, 2001
and its Quarterly Report on Form 10-Q for the period ended March 31, 2002, as of
the date of this  Agreement,  neither the Partnership nor its assets is involved
in material litigation.

      (6)   The Partnership has received the opinion (the "Opinion") of Houlihan
Lokey  Howard & Zukin that the Merger  Consideration  is fair,  from a financial
point  of  view,  to the  Limited  Partners  other  than  PIP  General  and  its
affiliates.


                                   ARTICLE VI
                                 VOTING OF UNITS

      (1)   The Partnership  hereby covenants and represents that as promptly as
practicable following the date hereof it shall hold a meeting (the "Meeting") of
the Limited  Partners at which the Limited Partners will have the opportunity to
vote their Units for or against the transactions contemplated by this Agreement.


                                       18



      (2)   At the Meeting,  PIP General hereby covenants and represents that it
shall  vote its Units  for or  against  the  transactions  contemplated  by this
Agreement in the same  proportion  as the total number of Units voted by Limited
Partners unaffiliated with PIP General or the General Partner.

      (3)   The Partnership  shall use reasonable  commercial  efforts to obtain
the approval of the Merger by the Limited Partners at the Meeting.


                                   ARTICLE VII
           PIP GENERAL AND ACQUISITION REPRESENTATIONS AND WARRANTIES

      Each of PIP General and Acquisition hereby represents and warrants that:

      (1)   Such  party has been duly  organized  and is  existing  as a limited
liability company in good standing under the State of California with full power
and  authority  to own and lease its  properties  and to conduct its business as
currently conducted.

      (2)   Such party has the power and  authority  to execute and deliver this
Agreement, to consummate the transactions contemplated hereby and to perform its
obligations  under this  Agreement.  The execution and delivery by such party of
this  Agreement,  and the  consummation by it of the  transactions  contemplated
hereby,  have been duly authorized by all necessary  limited  liability  company
action. This Agreement  (assuming the due authorization,  execution and delivery
hereof by the other parties  hereto)  constitutes  the legal,  valid and binding
obligation of such party,  enforceable  against it in accordance  with the terms
hereof.

      (3)   Such party's  execution,  delivery and performance of this Agreement
and the consummation by it of the transactions  contemplated hereby will not (i)
conflict  with or result in a breach or violation of any terms or provision  of,
or  constitute a default  under (with or without  notice or passage of time,  or
both), or otherwise give any person a basis for accelerated or increased  rights
or termination or nonperformance under, any indenture,  mortgage, deed of trust,
loan or credit  agreement,  lease,  license or other  agreement or instrument to
which such  party is a party or by which it or its assets is bound or  affected,
(ii) result in the violation of the  provisions  of the  formation  documents of
such party or any legal  requirement  applicable  to or binding upon such party,
(iii)  result in the  creation or  imposition  of any lien upon any  property or
asset of such party,  (iv) require the consent of any person to the transactions
contemplated  hereby that has not  heretofore  been  obtained  or (v)  otherwise
adversely  affect the  contractual  or other legal rights or  privileges of such
party.

      (4)   Acquisition,  PIP General and their  affiliates  have adequate funds
available  out of  current  resources  to pay the  Merger  Consideration  to all
holders of Units (other than PIP General and its affiliates).


                                       19



                                  ARTICLE VIII
                                   CONDITIONS

      (1) The  obligations  of each party  hereto to effect the Merger  shall be
subject to the  fulfillment  (or waiver by each party hereto) at or prior to the
Effective Date of the following conditions:

                  (a)  No  court  or  other  governmental  entity  of  competent
            jurisdiction shall have enacted,  issued,  promulgated,  enforced or
            entered any statute, rule, regulation,  judgment, decree, injunction
            or other order  (whether  temporary,  preliminary  or permanent) (i)
            that is in effect and  prohibits  consummation  of the Merger or any
            other  transactions  with  respect  to any  party  hereto  expressly
            contemplated  by this  Agreement,  or (ii) that is enacted,  issued,
            promulgated,  enforced or entered  after the date of this  Agreement
            and, in any such case, is in effect and imposes  restrictions on any
            party hereto with respect to the  business  operations  thereof that
            would result in a material  adverse effect on the assets,  business,
            financial  condition  or  prospects  thereof  (clauses (i) and (ii),
            collectively,  and "Order"),  and no governmental  entity shall have
            instituted  any proceeding or threatened to institute any proceeding
            seeking any such Order,  and no other person  shall have  instituted
            any proceeding  seeking any such Order which is reasonably likely to
            succeed.

                  (b)  All  material  actions by, and all  consents,  approvals,
            orders  or  authorizations  from,  or  filings  with,   governmental
            entities of competent  authority  necessary for the  consummation of
            the Merger or any other transactions  expressly contemplated by this
            Agreement shall have been obtained or made, as the case may be.

                  (c)  The Opinion shall not have been withdrawn.

      (2)   The  obligations  of the  Partnership  to effect  the Merger and the
other  transactions  relating to the Partnership  which are contemplated by this
Agreement to be performed by it are further  subject to the condition (or waiver
by the Partnership) that:

                  (a)  the  representations  and  warranties  of PIP General and
            Acquisition  set forth herein shall be true and correct at and as of
            the closing date; and

                  (b)  this agreement and the transactions  contemplated  hereby
            shall have been  approved and adopted by the  requisite  approval of
            the Limited Partners.


                                       20



      (3)   The  obligations of PIP General and Acquisition to effect the Merger
and the  other  transactions  contemplated  by this  Agreement  which  are to be
performed by it are further  subject to the conditions (or waiver by PIP General
and Acquisition) that:

                  (a)  the representations and warranties of the Partnership set
            forth  herein  shall be true and  correct  at and as of the  closing
            date;

                  (b)  the holders of the deeds of trust  referred to in Article
            V,  Section 3 above  consent (if  necessary)  to the Merger on terms
            acceptable to PIP General and Acquisition;

                  (c)  there is no material  adverse change,  from and after the
            date  hereof,  in  the  assets,  business,  financial  condition  or
            prospects of the Partnership; and

                  (d)  the   outstanding   indebtedness   with  respect  to  the
            Partnership's   properties  shall  have  been  refinanced  on  terms
            satisfactory to PIP General in its sole and absolute discretion.


                                   ARTICLE IX
                                   TERMINATION

      This Agreement may be terminated at any time prior to the Effective Date
(regardless of whether or not the requisite approvals of the Limited Partners
have been obtained) as follows:

      (1)   by the mutual written  consent of the  Partnership,  PIP General and
Acquisition;

      (2)   by the Partnership, on the one hand, or PIP General and Acquisition,
on the other  hand,  upon  written  notice  given to the other if any  judgment,
injunction,  order,  decree or action by any  governmental  entity of  competent
authority  preventing the consummation of the transactions  contemplated by this
Agreement shall have become final and nonappealable;

      (3)   by PIP  General or  Acquisition  upon  written  notice  given to the
Partnership,  upon a  material  breach  on the  part of the  Partnership  of any
representation,  warranty, covenant,  obligation or agreement of the Partnership
set forth herein that is not curable or, if curable,  is not cured within thirty
(30) days  after  written  notice  of such  breach  is given by PIP  General  or
Acquisition to the Partnership;

      (4)   by the  Partnership  upon  written  notice  given to PIP  General or
Acquisition, upon a material breach on the part of PIP General or Acquisition of
any


                                       21



representation,  warranty,  covenant,  obligation or agreement of PIP General or
Acquisition  set forth  herein that is not curable or, if curable,  is not cured
within  thirty  (30) days after  written  notice of such  breach is given by the
Partnership to PIP General or Acquisition; or

      (5)   by PIP General, Acquisition or the Partnership if the Merger has not
yet been consummated on or before July 31, 2002.


                                    ARTICLE X
                                  MISCELLANEOUS

      (1)   The  parties  hereto  each  agree to do,  execute,  acknowledge  and
deliver all such further acts, instruments and assurances,  and to take all such
further action, including,  without limitation, the execution and filing of such
instruments  in the  State  of  California  and any  other  State as  should  be
necessary or desirable to carry out this  Agreement and to consummate and effect
the Merger.

      (2)   This Agreement shall be governed by and construed in accordance with
the laws of California.

      (3)   All of the representations,  warranties,  covenants,  agreements and
undertakings set forth in this Agreement or in any instrument delivered pursuant
to  this  Agreement  confirming  the  representations,   warranties,  covenants,
agreements and  undertakings  set forth in this Agreement  shall terminate as of
the Effective Date, and shall have no further force or effect.

      (4)   Whether or not the  transactions  contemplated by this Agreement are
consummated,  all costs and expenses incurred in connection with this Agreement,
including, without limitations, the fees, expenses and disbursements of counsel,
financial  advisors  and  accountants,  shall  be  paid  by PIP  General  and/or
Acquisition.

      (5)   None of the General Partner, PIP General, Acquisition or any payment
agent retained in connection herewith,  nor any of their respective  affiliates,
will be liable to any Limited Partner for any Merger Consideration  delivered to
a public  official  pursuant to any applicable  abandoned  property,  escheat or
similar law.


                                       22



      IN WITNESS WHEREOF, the Partnership, PIP General and Acquisition have each
caused this Agreement to be effective as of the date and the year first written
above.

                              PROMETHEUS INCOME PARTNERS,
                              a California Limited Partnership

                              By:  PROMETHEUS DEVELOPMENT CO.,
                                INC., a California Corporation, its General
                                Partner

                                  By: __________________________________________
                                      Name:  John J. Murphy
                                      Title:  Vice President


                              PIP ACQUISITION, LLC, a California Limited
                              Liability Company

                              By:  PROMHILL, INC., a California Corporation,
                                   its Manager

                                  By: __________________________________________
                                      Name:  John J. Murphy
                                      Title:  Vice President

                              PIP PARTNERS - GENERAL,  LLC, a California
                              Limited Liability Company

                              By:  PROMHILL, INC., a California Corporation,
                                its Manager

                                  By: __________________________________________
                                      Name:  John J. Murphy
                                      Title:  Vice President


                                       23



FACSIMILE SENT:  Jul-22-2002    08:44AM   FROM:  Aspen Square Management


                           PROMETHEUS INCOME PARTNERS
                               350 Bridge Parkway
                           Redwood City, CA 94065-1517

                                 (650) 596-5393


                                  July 23, 2002

                                                                       EXHIBIT B

SENT VIA FACSIMILE (413)788-9207

Aspen Square Management, Inc.
380 Union Street, Suite 300
West Springfield, Massachusetts 01089

Attn: Mr. John Mnich

      Re:   Confidentiality Agreement
            -------------------------

Dear Mr. Mnich:

      Aspen  Square  Management,   Inc.  (together  with  its  subsidiaries  and
affiliates, "Recipient"), has requested Prometheus Income Partners, a California
limited   partnership   (the  "Company")  to  furnish   Recipient  with  certain
information,  materials and documents  deemed by the Company to be  confidential
and/or  proprietary,   regarding  the  Company  (collectively,  the  "Evaluation
Material")  in  connection  with a possible  transaction  with the  Company  (as
applicable, the "Transaction"), with reference to which Recipient hereby agrees,
on behalf of itself  and its  "Representatives"  (as  hereinafter  defined),  as
follows:

      1.    All  Evaluation   Material  heretofore  or  hereafter  furnished  to
Recipient,  as well as the  existence  of the  discussions  between  the parties
hereto,  shall be deemed  confidential  and  shall be kept in strict  confidence
under appropriate safeguards. The term Evaluation Material, as used herein, does
not include any information which (i) as shown by written records,  was lawfully
in Recipient's possession prior to any disclosure by the Company,  provided that
the  source  of  such  information  was not  prohibited  from  transmitting  the
information  to  Recipient  or  its  Representatives  by a  contractual,  legal,
fiduciary  or other  obligation,  or (ii) is  generally  available to the public
other than as a result of  disclosure  by  Recipient or  Recipient's  employees,
agents or  Representatives  or others  acting  on  Recipient's  behalf or others
acquiring such information through Recipient.

      2.    Without the Company's  prior written  consent,  Recipient shall not,
directly or indirectly:  (i) disclose or reveal any  Evaluation  Material to any
person,  firm or entity except to an appropriately  limited group of Recipient's
directors,  officers,  employees, who are actively and





directly  participating  in the  evaluation  of the  Transaction  (collectively,
"Representatives"),  each  of  whom  shall  be  informed  by  Recipient  of  the
confidential nature of the Evaluation Material,  be provided with a copy of this
letter  agreement and agree to observe the same terms and  conditions  set forth
herein as if specifically named a party hereto; (ii) use the Evaluation Material
for any purpose other than in connection with the Transaction; or (iii) disclose
to any person or entity the terms, conditions or other facts with respect to the
Transaction (including the existence,  whether actual or prospective, and status
thereof) or that  Evaluation  Material has been made available to Recipient.  In
any  event,   Recipient   shall  be  responsible   for  any  disclosure  by  its
Representatives  (other than pursuant to the terms and subject to the conditions
of this letter agreement) of the Evaluation Material, or the existence,  content
or status of negotiations  relating to the  Transaction,  and Recipient shall be
responsible  for enforcing the  confidentiality  of the Evaluation  Material and
will take such action as is necessary to prevent any  disclosure  thereof by any
of its Representatives.

      3.    Upon  written  notice  from  the  Company,  Recipient  will  deliver
promptly  to the Company all copies of  Evaluation  Material  and all written or
tangible  material  containing or reflecting  any  information  contained in the
Evaluation  Material  without  retaining  any  copies,  summaries,  analyses  or
extracts thereof. All documents,  memoranda,  analyses,  compilations,  studies,
notes and other writings prepared by Recipient or its  Representatives  based on
or containing  any  information  contained in the  Evaluation  Material shall be
destroyed.

      4.    If Recipient is requested or required in a judicial,  administrative
or  governmental  proceeding,  or  required by law to  disclose  any  Evaluation
Material or the  existence,  content or status of  negotiations  relating to the
Transaction,  Recipient  shall  provide the Company  with prompt  notice of such
circumstance and all related proceedings and information so that the Company may
seek an appropriate  protective order, take other action deemed advisable by the
Company or, in the Company's sole discretion , waive Recipient's compliance with
the confidentiality  provisions of this letter agreement. If, as a result of any
such  request  or  requirement,  Recipient  is, in the  opinion  of its  outside
counsel, compelled to disclose Evaluation Material or the existence,  content or
status of  negotiations  relating to the Transaction (i) to any tribunal or else
stand  liable for  contempt  or other  censure or penalty,  or (ii)  pursuant to
applicable  law,  Recipient  may disclose,  without  liability  hereunder,  that
portion of the  Evaluation  Material  to such  tribunal  or pursuant to such law
which  Recipient's  outside  counsel  advises it in  writing  that it is legally
compelled to disclose,  provided  that  Recipient  has complied  with the notice
provisions of this Section 4.

      5.    Recipient  agrees on behalf of itself and its  Representatives  that
without  the  prior  approval  of  the  Company,   neither   Recipient  nor  its
Representatives (i) will approach employees of the Company,  its customers,  its
suppliers or any competitor of the Company to discuss any potential  transaction
with the  Company  (other  than a  transaction  in the  ordinary  course  of the
Company's and Recipient's  respective businesses) or (ii) approach the employees
of the Company to discuss  any  information  with  respect to the Company or its
business or otherwise receive or try to obtain  information from any employee of
the Company.

      6.    Until  the  earlier  of  (i)  the  execution  by  Recipient  of  the
Transaction  Agreement or (ii) two years from the date of this letter agreement,
Recipient,  on behalf of itself and its  affiliates,  agrees not to solicit  the
employment of, hire, or otherwise interfere with the relationship of the Company
or its affiliates with, any individual,  partnership, firm, corporation or other
business  organization  which is  employed  by or  otherwise  engaged to perform
services  for  the


                                       2



Company  or any of its  affiliates  on an  exclusive  basis,  including  but not
limited to any independent contractors or organizations.

      7.    Except  as may be  specifically  provided  in a  definitive  written
agreement providing for the Transaction (a "Transaction Agreement"), the Company
shall not be deemed to make or have made any representation or warranty, express
or implied,  as to the accuracy or completeness of any Evaluation Material which
the Company or any of its  affiliates  or other person  acting on its behalf may
furnish to Recipient, and the Company and its affiliates shall have no liability
to  Recipient  or any of  its  Representatives  resulting  from  the  use of any
Evaluation Material by Recipient or its Representatives  (which shall be limited
to evaluating the Transaction).

      8.    Recipient acknowledges and agrees that in the event of any breach of
this  Agreement  by it the  Company may suffer  irreparable  harm and that money
damages would not be a sufficient remedy for such breach,  and without prejudice
to any rights and remedies otherwise available to the Company, the Company shall
be entitled  (i) to  equitable  relief by way of  injunction  and (ii) to compel
specific  performance  without  the need of proof of actual  damages.  Recipient
further  agrees  to  waive,  and to cause  its  Representatives  to  waive,  any
requirement  for the  securing  or posting of any bond in  connection  with such
remedies.  No failure or delay by the Company in exercising any right,  power or
privilege  hereunder shall operate as a waiver thereof,  nor shall any single or
partial exercise thereof preclude any other or further exercise hereunder.

      9.    Recipient acknowledges and agrees to advise its Representatives that
the  Evaluation  Material  and the  matters  that are the subject of this letter
agreement constitute material, non-public information and that the United States
securities  laws prohibit any person who has received such  information  from an
issuer  from   purchasing   or  selling   securities  of  that  issuer  or  from
communicating such information to any other person under  circumstances in which
it is reasonably foreseeable that such person is likely to purchase or sell such
securities.

      10.   In consideration  of being furnished the Evaluation  Material and in
view of the fact that the  Evaluation  Material  consists  of  confidential  and
non-public information, Recipient agrees that for a period of two years from the
date of this  letter  agreement,  and  other  than  pursuant  to the  terms of a
Transaction  Agreement  between  Recipient  and the Company,  Recipient  and its
Representatives  shall  not,  nor shall  Recipient  permit  any person or entity
controlled  by  Recipient,  directly or  indirectly,  without the prior  written
invitation or approval of the general  partner (it being  understood  and agreed
that the  entering  into of this  letter  agreement  shall not  constitute  such
invitation or approval), to:

            (i)  Acquire or offer,  seek or agree to  acquire,  or in any manner
      advise, induce, encourage or assist any other person to acquire,  directly
      or  indirectly,  by purchase or otherwise,  2% or more of the  partnership
      units ("units") of the Company; or

            (ii) Initiate, or in any manner advise, induce,  encourage or assist
      any other  person to initiate,  any tender or exchange  offer for units of
      the Company, any merger, business combination,  change in control, sale of
      assets, liquidation or other extraordinary transaction of or involving the
      Company or any other transaction  between Recipient or its affiliates,  on
      the one hand, and the Company and/or its unit holders,  on the other hand,
      unless such offer or transaction is approved by the general partner;


                                       3



      11.   Recipient  agrees  that  unless  and until a  Transaction  Agreement
between the Company and Recipient has been executed and  delivered,  the Company
has no legal  obligation of any kind  whatsoever with respect to any transaction
by virtue of this letter  agreement  or  otherwise  except,  in the case of this
letter agreement, for the matters specifically agreed to herein.

      12.   This letter agreement shall be binding upon  Recipient's  successors
and  assigns  and  shall  inure  to the  benefit  of and be  enforceable  by the
Company's successors and assigns.

      13.   In the  event  that  any  provision  of  this  letter  agreement  is
determined to be partially or wholly  invalid,  illegal or  unenforceable,  then
such  provision  shall be deemed to be  modified  or  restricted  to the  extent
necessary to make such provision  valid,  binding and  enforceable,  or, if such
provision  cannot  be  modified  or  restricted  in a manner  so as to make such
provision valid, binding and enforceable, then such provision shall be deemed to
be excised  from this letter  agreement  and the  validity,  binding  effect and
enforceability of the remaining provisions of this letter agreement shall not be
affected or impaired in any manner.

      14.   This letter  agreement  constitutes  the  complete  agreement of the
parties and terminates and supersedes any and all prior agreements, arrangements
and understandings,  oral or written, between the parties concerning the subject
matter of this letter agreement.

      15.   This letter  agreement  shall be construed  (both as to validity and
performance)  and enforced in accordance  with, and governed by, the laws of the
State of California  applicable to  agreements  made and to be performed  wholly
within such jurisdiction, notwithstanding any choice of law principles, statutes
or rules to the contrary.

      16.   This letter agreement may be waived,  amended or modified only by an
instrument in writing  signed by the party against which such waiver,  amendment
or modification is sought to be enforced,  and such written instrument shall set
forth  specifically  the  provisions of this letter  agreement that are to be so
waived, amended or modified.

      Please  indicate  your  agreement  with the  foregoing  by  executing  the
      accompanying  copy  of  this  letter  agreement  and  returning  it to us,
      whereupon  it shall  constitute  a binding  agreement as of the date first
      above written.




                                  Very truly yours,

                               PROMETHEUS INCOME PARTNERS, a
                               California limited partnership

                               By:   PROMETHEUS  DEVELOPMENT  CO.,
                                     INC., a California corporation, its general
                                     partner

                               By:   /s/ John J. Murphy
                                     -------------------------
                                     John J. Murphy, Vice President


                                      4



READ, ACCEPTED AND AGREED TO:

ASPEN SQUARE MANAGEMENT, INC.


By:   /s/ Jeremy Pava
      ---------------

Its:___Treasurer

Original sent by overnight mail


                                       5




FACSIMILE SENT:  Jul-22-2002   08:44AM   FROM:  Aspen Square Management


Aspen Square Management Inc.

180 Union Street, Suite 300
West Springfield Massachusetts 07088
Phone: 413-587-0772
FAX 413-786-9207


July 18, 2002                            Via Facsimile and Federal Express

                                                                  EXHIBIT C

Vicki Mullins
Prometheus Income Partners
350 Bridge Parkway
Redwood City, CA 94065


Dear Vicki

We  appreciate  your  willingness  to  quickly  provide  us with  any  pertinent
documents  and other  information  that we require as part of our due  diligence
review  regarding  the  partnership   interests  and  the  underlying  apartment
communities.   In  regards  to  this  matter,  we  will  require  the  following
information:

1.  Copies  of  all  mortgages,  loan  documents,  bond  documents,   regulatory
agreements.  and all other documents pertaining to any current financing on each
property.

2. A.L.T.A. Survey for each property.

3. Title Insurance commitment and all documents constituting exceptions to
title.

4. Copies of outstanding third-party service contracts and other agreements
affecting the. properties, including any assignable warranties.

5. Copies of any engineering information and inspection reports, including Phase
I environmental studies and updated reports, plats, zoning ordinances and
compliance, business licenses, availability of utilities, or any other related
data.

6. Copies of the municipal, state and federal Certificates of Occupancy, or the
equivalent, issued to date for each property.

7. Copies of the original operating income, expense and capital expenditures
records for each property from 1998, 1999, 2000, 2001 and the latest available
for 2002.

8. A current rent roll for each property identifying and listing in detail
therein by tenant and by vacant area, as applicable; tenants, square footage
monthly rent, deposits, all concessions (financial and other), lease terms,


                                       6



lease term extension options, defaulted tenant leases (financial or otherwise),
and tenant lease obligations of Seller, if any, and all legal matters as it
relates to the collection of rent.

9. Copies of any termite inspections, and notice of violations including but not
limited to those regarding building and fire codes.

10. Disclosure of any legal matters affecting the properties or collection, of
rents or deposits.

11. All available plans and specifications; real estate and personal property
tax statements and valuation notices, all certificates of insurance and copies
of insurance policies. and all building permits.

12. Al1 licenses and permits. liens and lawsuits.

13. Copies of all ledger cards, general ledger (year-to-date cash disbursement
journal}, year-to-date vendor files, bank statements/deposit slips, and all open
invoices.

14. Insurance loss runs, rate history, occupancy percentage by month covering
1998-2002 to date.

15. Aging of accounts receivable and current staffing schedu1e.

16. Inventory of personal property.

17. True and complete copies of all tenant lease files and amendments thereto,
as well as any other agreement incident or related thereto which affect the
obligations of Seller and the affected tenant with respect to such leases.

18. Copies of any reports. structural, legal or other in nature, relating to the
damaged siding on each property.

Vicki, we request that you provide this information to us via overnight
delivery. Once we receive all such requested information, we assume our due
diligence review will begin.

Yours truly,


/s/ Jeff Strole
- ---------------

Jeff Strole


                                       7



                                    FACSIMILE



                                   PROMETHEUS
                               350 Bridge Parkway
                           Redwood City, CA 94065-1517

Telephone:  650/596-5300                                 Facsimile: 650/596-5377



DATE:    July 23, 2002


To:   Jeff Strole                                            From: Vicki Mullins
Co.:  Aspen Square Management                                  Tel: 650/596-5365
Fax:  413-788-9207                                                 (Direct Line)

Re:   Prometheus Income Partners

NO. OF PAGES (Including Cover Sheet)        19
                                           ----

================================================================================


COMMENTS:

Attached  is the revised  letter  dated July 19,  2002.  We have made all of the
changes you have requested,  except the deletion of the phrase "and enter into a
binding agreement". Fiducially, we are unable to make this change. Additionally,
we have extended your time for acceptance to 12:00 noon California time, on July
20, 2002. No further extensions will be granted.


Attach.


                                       1



                           PROMETHEUS INCOME PARTNERS

                               350 Bridge Parkway
                           Redwood City, CA 94065-1517
                                 (650) 596-5393

July 19, 2002

Aspen Square Management, Inc.
380 Union Street, Suite 300
West Springfield, Massachusetts 01089

Ladies and Gentlemen:

      This letter sets forth the essential terms of your proposed due diligence
review ("Diligence Review") on the basis of which we are willing to continue to
consider your possible acquisition of Prometheus Income Partners, a California
limited partnership (the "Partnership"). Our understanding of your proposal is
embodied in the following:

      1. You (or an entity to be formed by you) would acquire (i) each of the
Partnership's issued and outstanding limited partnership units for $1,859 in
cash per unit and (ii) the general partner interest in the Partnership now held
by Prometheus Development Co., Inc. (the "General Partner") for $1,500,000 in
cash, in each case payable in full upon consummation of the acquisition of the
limited Partner's units and General Partner's interest, collectively referred to
as "Proposed Acquisition".

      2. Except as expressly set forth herein, you have proposed substantively
all of the terms included in the definitive Agreement and Plan of Merger (the
"Definitive Agreement") attached hereto as Exhibit A, with the following
modifications:

            (a) mutual covenants of cooperation to obtain the approval of
      Proposed Acquisition by the Partnership's limited partners (including
      preparation of proxy materials) and such other approvals (if any) as may
      be required to complete the transaction;

            (b) no closing condition in respect of financing, refinancing or
      assumption of existing mortgages;

            (c) mutual representations that no broker, finder's, agency or
      similar fees to be paid;

            (d) with your proposed contract for the Proposed Acquisition, you
      shall deposit $3,000,000 into escrow with a mutually acceptable escrow
      agent on mutually acceptable terms. If no Proposed Acquisition is
      consummated, the $3,000,000 will be disbursed to the Partnership unless
      the Proposed Acquisition was not consummated as a result of either a
      breach by the Partnership or the rejection of the Proposed Acquisition by
      the Partnership's limited partners, in which case it will be returned to
      you; and


                                      -2-



            (e) the executed contract would be terminable by either party if the
      Proposed Acquisition has not been consummated on or prior to December 31,
      2002, other than as a result of a breach by such party.

      3. You agree to commence at your expense your Diligence Review of the
Partnership and its properties promptly after execution of this letter. We agree
to reasonably provide to you and your representatives access to the properties,
books, records, documents, contracts and other records of the Partnership and
shall furnish you with copies of such documents and with such information with
respect to the affairs of the Partnership, as you reasonably deem necessary for
the purpose of conducting the Diligence Review. We will endeavor to make a
reasonable search to provide you with the records requested. It is agreed that
the items requested on Exhibit C hereto shall be made available to you, to the
extent that they are within our possession and control, except that (i) you
acknowledge that we are unable to provide you with employee's personnel files
and (ii) you and we shall agree in good faith to limit certain of such
information temporally, including, e.g., that bank statements, etc., need only
be made available for the previous three years. Because the records you are
requesting are so numerous, we are only obligated to make reasonable efforts to
assist your inspection. Upon your designating the records you wish copied, we
will send them to an outside service at your expense. You agree that you will
complete the Diligence Review not later than August 1, 2002 (the "Diligence
Cut-off Date").

      4. In consideration of the foregoing and of your previous representations
to us as to your ability to pay all cash pursuant to the Proposed Acquisition
with currently available liquid funds, we agree to postpone the taking of any
vote on the currently proposed merger until after the Diligence Cut-off Date.

      5. You acknowledge that (i) we will have to advise our limited partners
appropriately and from time to time regarding the matters set forth herein and
(ii) at any time prior to any written acceptance of your proposed offer (which
you agree to deliver prior to the Due Diligence Cut-off Date), the General
Partner has fiduciary duties to the Partnership and its limited partners in the
discharge of which it is obligated to consider alternatives that may be more
favorable to the limited partners. If on or prior to December 31, 2002 the
General Partner shall present and recommend to the limited partners any
transaction involving an acquisition of the limited partner units at a price in
excess of $1859 per unit in which the acquiror, directly or indirectly, is an
affiliate of the General Partner, PIP Partners - General, LLC, PIP Acquisition,
LLC, and your proposal is not accepted, the Partnership shall reimburse you for
all reasonable out-of-pocket costs incurred by you in conducting the Diligence
Review up to an aggregate maximum amount of $25,000.

      6. This letter supersedes all previous correspondence, discussions,
understandings and agreements between you and us or our respective officers,
directors, agents and representatives, provided that the letter agreement
regarding confidentiality and related matters attached hereto as Exhibit B shall
remain in full force and effect (and, for the avoidance of doubt, shall apply
with respect to the information provided in the course of the Diligence Review).

      Except for the express terms of paragraphs 3, 4 and 6 hereof, each of
which shall and hereby does constitute a binding agreement: it is expressly
understood that this letter



                                      -3-



is non-binding and is intended to include part of the basic terms and conditions
under which the Partnership may enter into a formal agreement with Aspen for the
Proposed Acquisition; this letter shall only serve to form part of the basis for
a possible agreement which must be agreed upon and executed by all parties prior
to having any binding effect; this non-binding letter is not intended to be
contractual in nature and neither party shall be obligated to proceed in good
faith, or by any other standard, to enter into an agreement based upon the terms
set forth above; and a binding agreement will only exist when the agreement is
executed by duly authorized representatives from all parties. Additionally, the
Partnership reserves the right to negotiate and enter into a binding agreement
with another party until a mutually acceptable agreement is fully executed
(subject to the last sentence of paragraph 5 above.)

      If the foregoing is in accordance with your understanding, please so
indicate by signing the enclosed copy of this letter in the space provided and
returning it to us on or prior to [INTERPOLATED WRITTEN MATERIAL:"6:00 P.M.
E.D.T." deleted, "12:00 noon" inserted], California time, July [INTERPOLATED
WRITTEN MATERIAL: "20" deleted, "22" inserted], 2002. Please fax a signed copy
to the attention of Vicki Mullins at (650) 596-5377 and send the original via
overnight mail.



                           PROMETHEUS INCOME PARTNERS

                           By:   Prometheus Development Co., Inc.,
                                 a California corporation, its general partner

                              By: /s/ Vicki Mullins
                                 -----------------------------------------------
                              Name: Vicki Mullins
                              Title: Vice President

AGREED AND ACCEPTED:

ASPEN SQUARE MANAGEMENT, INC.


By:
      --------------------
Name:
Title:




                                      -4-



                                                                EXHIBIT A


                    AMENDED AND RESTATED AGREEMENT AND PLAN OF MERGER

      This Amended and Restated  Agreement and Plan of Merger (this "Agreement")
is entered into as of May 22, 2002, by and among Prometheus  Income Partners,  a
California limited partnership (the "Partnership"), PIP Partners - General, LLC,
a California  limited  liability  company ("PIP General"),  and PIP Acquisition,
LLC, a California limited liability company and a wholly-owned subsidiary of PIP
General ("Acquisition").

      WHEREAS,  the  parties  desire  to  merge  Acquisition  with  and into the
Partnership (the "Merger") on the terms and conditions hereinafter set forth and
in  accordance  with the  provisions of Sections  15678.1-.9  of the  California
Revised  Uniform  Limited  Partnership  Act, as amended (the "Act") and Sections
17550-17556 of the Beverly-Killea Limited Liability Company Act (the "LLC Act");

      WHEREAS, Acquisition has been formed for such purpose.

      WHEREAS,  the parties have entered into that certain Agreement and Plan of
Merger dated as of March 6, 2002 (the "Original Agreement"); and

      WHEREAS,  the  parties  have  reviewed  the  financial  statements  of the
Partnership  as of and for the quarter ended March 31, 2002 and based  thereupon
wish to increase  the merger  consideration  of $1,714 per limited  partner unit
provided for in the Original Agreement to $1,736 per unit.

      NOW  THEREFORE,  BE IT  RESOLVED,  that  in  consideration  of the  mutual
covenants  and  agreements   contained   herein  and  other  good  and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties agree, and the Original  Agreement is hereby amended and restated in its
entirety to read, as follows:


                                    ARTICLE I
                                 TERMS OF MERGER

      Acquisition  shall be merged with and into the  Partnership in a statutory
merger in  accordance  with the Act and the LLC Act on the terms and  subject to
the conditions set forth in this Agreement.


                                   ARTICLE II
                                EFFECT OF MERGER

      On the "Effective Date" (as defined below):

      (1)   Acquisition shall be merged with and into the Partnership;






      (2) the Partnership shall possess all the rights,  privileges,  immunities
and franchises of Acquisition,  and all property,  real, personal and mixed, and
debts due on whatever account,  and every other interest  belonging to or due to
Acquisition (including,  but not limited to, liability for any fees or franchise
taxes due and owing to the  Secretary of State of California as of the Effective
Date)  shall be  deemed to be  transferred  to and  vested  in the  Partnership,
without further act, deed or transfer;

      (3) the  Partnership  shall  thenceforth be responsible for and subject to
all of the debts,  liabilities and obligations of Acquisition in the same manner
as if the Partnership had itself incurred them;

      (4) any  claim,  existing  action,  or  proceeding  pending  by or against
Acquisition may be prosecuted to judgment by the Partnership; and

      (5) neither  the rights of  creditors  nor any liens upon the  property of
Acquisition shall be impaired by the Merger.

The  "Effective  Date"  shall  be the date  following  the  satisfaction  of the
conditions  set forth in Article VIII hereof on which a Certificate of Merger is
filed with the Secretary of State of the State of California in accordance  with
the Act and the LLC Act,  which  date  shall be not  greater  than  twenty  days
following the approval of the Merger by the limited  partners of the Partnership
(the "Limited Partners").


                                   ARTICLE III
                    MANNER AND BASIS OF CONVERTING INTERESTS

      As of the  Effective  Date, by virtue of the Merger and without any action
on the part of any party hereto:

      (1) Each limited  partner  interest in the  Partnership  (each,  a "Unit")
outstanding  immediately  prior to the Effective  Date (other than any such Unit
held by PIP  General)  shall be  converted  into and shall  become  the right to
receive cash  (without  interest  thereon) in an amount equal to $1,736.00  (the
"Merger  Consideration") upon surrender of a duly executed letter of transmittal
by the holder of such Unit in form and substance reasonably  satisfactory to PIP
General. As of the Effective Date, each such Unit shall no longer be outstanding
and shall  automatically  be cancelled and retired and shall cease to exist, and
the holder of such Unit shall  cease to have any rights  with  respect  thereto,
except the right to receive the Merger Consideration.

      (2) As of the Effective Date,  each member interest in Acquisition  issued
and   outstanding  as  of  the  Effective  Date  shall  be  converted  into  one
newly-issued Unit.


                                   ARTICLE IV
                       CHARTER DOCUMENTS; GENERAL PARTNER


                                       2


      (1) The Certificate of Limited Partnership and Second Amended and Restated
Limited  Partnership  Agreement of the  Partnership  dated  October 1, 1992 (the
"Partnership Agreement"),  each as in effect on the Effective Date, shall be the
charter documents of the Partnership until duly amended or changed in accordance
with the Partnership Agreement and the Act.

      (2)  Subject  to  and  in  accordance  with  the  Partnership   Agreement,
Prometheus  Development  Co., Inc.  will continue as the general  partner of the
Partnership.


                                    ARTICLE V
                   PARTNERSHIP REPRESENTATIONS AND WARRANTIES

      The Partnership hereby represents and warrants that:

      (1) The  Partnership  has been duly organized and is existing as a limited
partnership in good standing under the laws of the State of California with full
power and authority to own and lease its  properties and to conduct its business
as currently conducted.

      (2) The  Partnership  has the power and  authority  to execute and deliver
this  Agreement,  to  consummate  the  transactions  contemplated  hereby and to
perform its obligations  under this Agreement.  The execution and delivery by it
of this Agreement, and the consummation of the transactions contemplated hereby,
have been duly authorized by all necessary action by the Partnership  other than
the  approval  of  Limited  Partners  holding  at least  50% of the  issued  and
outstanding Units. This Agreement (assuming the due authorization, execution and
delivery  hereof by the other parties hereto)  constitutes the legal,  valid and
binding obligation of the Partnership, enforceable against it in accordance with
the terms hereof.

      (3) Other than as follows, the execution, delivery and performance of this
Agreement and the consummation of the transactions will not (i) conflict with or
result in a breach or violation of any terms or  provision  of, or  constitute a
default under (with or without notice or passage of time, or both), or otherwise
give any person a basis for  accelerated  or increased  rights or termination or
nonperformance  under, any indenture,  mortgage,  deed of trust,  loan or credit
agreement,  lease,  license  or other  agreement  or  instrument  to  which  the
Partnership  is a party or by which the  Partnership  or its  assets is bound or
affected,  (ii)  result in the  violation  of the  provisions  of the  formation
documents of the Partnership or any legal  requirement  applicable to or binding
upon the  Partnership,  (iii) result in the creation or  imposition  of any lien
upon any property or asset of the  Partnership,  (iv) require the consent of any
person to the  transactions  contemplated  hereby that has not  heretofore  been
obtained  other than the consent of the Limited  Partners and of The  Prudential
Insurance  Company of America or (v) otherwise  adversely affect the contractual
or other legal rights or privileges of the Partnership:


                                       3


                  (a) Deed of Trust, Security Agreement and Fixture Filing with
            Assignment of Rents and Proceeds dated as of December 23, 1997, with
            respect to Alderwood; and

                  (b) Deed of Trust, Security Agreement and Fixture Filing with
            Assignment of Rents and Proceeds dated as of December 23, 1997, with
            respect to Timberleaf.

      (4) Other than as follows, or as otherwise disclosed in this Agreement as
of the date of this Agreement, the Partnership has good and marketable title to
all of the Partnership's assets free and clear of all liens:

                  Mortgages and liens not yet due and payable,  covenants,
                  conditions and restrictions of record

      (5) Other than the hardboard siding litigation discussed in the
Partnership's Annual Report on Form 10-K/A for the year ended December 31, 2001
and its Quarterly Report on Form 10-Q for the period ended March 31, 2002, as of
the date of this Agreement, neither the Partnership nor its assets is involved
in material litigation.

      (6) The Partnership has received the opinion (the "Opinion") of Houlihan
Lokey Howard & Zukin that the Merger Consideration is fair, from a financial
point of view, to the Limited Partners other than PIP General and its
affiliates.


                                   ARTICLE VI
                                 VOTING OF UNITS

      (1) The Partnership hereby covenants and represents that as promptly as
practicable following the date hereof it shall hold a meeting (the "Meeting") of
the Limited Partners at which the Limited Partners will have the opportunity to
vote their Units for or against the transactions contemplated by this Agreement.

      (2) At the Meeting, PIP General hereby covenants and represents that it
shall vote its Units for or against the transactions contemplated by this
Agreement in the same proportion as the total number of Units voted by Limited
Partners unaffiliated with PIP General or the General Partner.

      (3) The Partnership shall use reasonable commercial efforts to obtain the
approval of the Merger by the Limited Partners at the Meeting.


                                   ARTICLE VII
                PIP GENERAL AND ACQUISITION REPRESENTATIONS AND WARRANTIES

      Each of PIP General and Acquisition hereby represents and warrants that:


                                       4



      (1) Such party has been duly organized and is existing as a limited
liability company in good standing under the State of California with full power
and authority to own and lease its properties and to conduct its business as
currently conducted.

      (2) Such party has the power and authority to execute and deliver this
Agreement, to consummate the transactions contemplated hereby and to perform its
obligations under this Agreement. The execution and delivery by such party of
this Agreement, and the consummation by it of the transactions contemplated
hereby, have been duly authorized by all necessary limited liability company
action. This Agreement (assuming the due authorization, execution and delivery
hereof by the other parties hereto) constitutes the legal, valid and binding
obligation of such party, enforceable against it in accordance with the terms
hereof.

      (3) Such party's execution, delivery and performance of this Agreement and
the consummation by it of the transactions contemplated hereby will not (i)
conflict with or result in a breach or violation of any terms or provision of,
or constitute a default under (with or without notice or passage of time, or
both), or otherwise give any person a basis for accelerated or increased rights
or termination or nonperformance under, any indenture, mortgage, deed of trust,
loan or credit agreement, lease, license or other agreement or instrument to
which such party is a party or by which it or its assets is bound or affected,
(ii) result in the violation of the provisions of the formation documents of
such party or any legal requirement applicable to or binding upon such party,
(iii) result in the creation or imposition of any lien upon any property or
asset of such party, (iv) require the consent of any person to the transactions
contemplated hereby that has not heretofore been obtained or (v) otherwise
adversely affect the contractual or other legal rights or privileges of such
party.

      (4) Acquisition, PIP General and their affiliates have adequate funds
available out of current resources to pay the Merger Consideration to all
holders of Units (other than PIP General and its affiliates).


                                  ARTICLE VIII
                                   CONDITIONS

      (1) The obligations of each party hereto to effect the Merger shall be
subject to the fulfillment (or waiver by each party hereto) at or prior to the
Effective Date of the following conditions:

                  (a) No court or other governmental entity of competent
            jurisdiction shall have enacted, issued, promulgated, enforced or
            entered any statute, rule, regulation, judgment, decree, injunction
            or other order (whether temporary, preliminary or permanent) (i)
            that is in effect and prohibits consummation of the Merger or any
            other transactions with respect to any party hereto expressly
            contemplated by this Agreement, or



                                       5



             (ii) that is enacted, issued, promulgated, enforced or entered
             after the date of this Agreement and, in any such case, is in
             effect and imposes restrictions on any party hereto with respect to
             the business operations thereof that would result in a material
             adverse effect on the assets, business, financial condition or
             prospects thereof (clauses (i) and (ii), collectively, and
             "Order"), and no governmental entity shall have instituted any
             proceeding or threatened to institute any proceeding seeking any
             such Order, and no other person shall have instituted any
             proceeding seeking any such Order which is reasonably likely to
             succeed.

                  (b)   All material actions by, and all consents, approvals,
             orders or authorizations from, or filings with, governmental
             entities of competent authority necessary for the consummation of
             the Merger or any other transactions expressly contemplated by this
             Agreement shall have been obtained or made, as the case may be.

                  (c)   The Opinion shall not have been withdrawn.

      (2) The obligations of the Partnership to effect the Merger and the other
transactions relating to the Partnership which are contemplated by this
Agreement to be performed by it are further subject to the condition (or waiver
by the Partnership) that:

                  (a)   the representations and warranties of PIP General and
             Acquisition set forth herein shall be true and correct at and as of
             the closing date; and

                  (b) this agreement and the transactions contemplated hereby
            shall have been approved and adopted by the requisite approval of
            the Limited Partners.

      (3) The obligations of PIP General and Acquisition to effect the Merger
and the other transactions contemplated by this Agreement which are to be
performed by it are further subject to the conditions (or waiver by PIP General
and Acquisition) that:

                  (a)   the representations and warranties of the Partnership
             set forth herein shall be true and correct at and as of the closing
             date;

                  (b) the holders of the deeds of trust referred to in Article
            V, Section 3 above consent (if necessary) to the Merger on terms
            acceptable to PIP General and Acquisition;

                  (c) there is no material adverse change, from and after the
            date hereof, in the assets, business, financial condition or
            prospects of the Partnership; and


                                       6



                  (d) the outstanding indebtedness with respect to the
            Partnership's properties shall have been refinanced on terms
            satisfactory to PIP General in its sole and absolute discretion.


                                   ARTICLE IX
                                   TERMINATION

      This Agreement may be terminated at any time prior to the Effective Date
(regardless of whether or not the requisite approvals of the Limited Partners
have been obtained) as follows:

      (1) by the mutual written consent of the Partnership, PIP General and
Acquisition;

      (2) by the Partnership, on the one hand, or PIP General and Acquisition,
on the other hand, upon written notice given to the other if any judgment,
injunction, order, decree or action by any governmental entity of competent
authority preventing the consummation of the transactions contemplated by this
Agreement shall have become final and nonappealable;

      (3) by PIP General or Acquisition upon written notice given to the
Partnership, upon a material breach on the part of the Partnership of any
representation, warranty, covenant, obligation or agreement of the Partnership
set forth herein that is not curable or, if curable, is not cured within thirty
(30) days after written notice of such breach is given by PIP General or
Acquisition to the Partnership;

      (4) by the Partnership upon written notice given to PIP General or
Acquisition, upon a material breach on the part of PIP General or Acquisition of
any representation, warranty, covenant, obligation or agreement of PIP General
or Acquisition set forth herein that is not curable or, if curable, is not cured
within thirty (30) days after written notice of such breach is given by the
Partnership to PIP General or Acquisition; or

      (5) by PIP General, Acquisition or the Partnership if the Merger has not
yet been consummated on or before July 31, 2002.


                                    ARTICLE X
                                  MISCELLANEOUS

      (1) The parties hereto each agree to do, execute, acknowledge and deliver
all such further acts, instruments and assurances, and to take all such further
action, including, without limitation, the execution and filing of such
instruments in the State of California and any other State as should be
necessary or desirable to carry out this Agreement and to consummate and effect
the Merger.


                                       7



      (2) This Agreement shall be governed by and construed in accordance with
the laws of California.

      (3) All of the representations, warranties, covenants, agreements and
undertakings set forth in this Agreement or in any instrument delivered pursuant
to this Agreement confirming the representations, warranties, covenants,
agreements and undertakings set forth in this Agreement shall terminate as of
the Effective Date, and shall have no further force or effect.

      (4) Whether or not the transactions contemplated by this Agreement are
consummated, all costs and expenses incurred in connection with this Agreement,
including, without limitations, the fees, expenses and disbursements of counsel,
financial advisors and accountants, shall be paid by PIP General and/or
Acquisition.

      (5) None of the General Partner, PIP General, Acquisition or any payment
agent retained in connection herewith, nor any of their respective affiliates,
will be liable to any Limited Partner for any Merger Consideration delivered to
a public official pursuant to any applicable abandoned property, escheat or
similar law.


                                       8



      IN WITNESS WHEREOF, the Partnership, PIP General and Acquisition have each
caused this Agreement to be effective as of the date and the year first written
above.

                              PROMETHEUS INCOME PARTNERS,
                              a California Limited Partnership

                              By:  PROMETHEUS DEVELOPMENT CO.,
                                INC., a California Corporation, its General
                                Partner

                                  By:
                                      ------------------------------------------
                                      Name:  John J. Murphy
                                      Title:  Vice President


                              PIP ACQUISITION, LLC, a California Limited
                              Liability Company

                              By:  PROMHILL, INC., a California Corporation,
                                its Manager

                                  By:
                                      ------------------------------------------
                                      Name:  John J. Murphy
                                      Title:  Vice President

                              PIP PARTNERS - GENERAL,  LLC, a California
                              Limited Liability Company

                              By:  PROMHILL, INC., a California Corporation,
                                its Manager

                                  By:
                                      ------------------------------------------
                                      Name:  John J. Murphy
                                      Title:  Vice President



                                       9



12

                           PROMETHEUS INCOME PARTNERS
                               350 Bridge Parkway
                           Redwood City, CA 94065-1517

                                 (650) 596-5393


                                  July 23, 2002

                                                      EXHIBIT B
SENT VIA FACSIMILE (413)788-9207

Aspen Square Management, Inc.
380 Union Street, Suite 300
West Springfield, Massachusetts 01089

Attn: Mr. John Mnich

      Re:   Confidentiality Agreement
            -------------------------

Dear Mr. Mnich:

      Aspen Square Management, Inc. (together with its subsidiaries and
affiliates, "Recipient"), has requested Prometheus Income Partners, a California
limited partnership (the "Company") to furnish Recipient with certain
information, materials and documents deemed by the Company to be confidential
and/or proprietary, regarding the Company (collectively, the "Evaluation
Material") in connection with a possible transaction with the Company (as
applicable, the "Transaction"), with reference to which Recipient hereby agrees,
on behalf of itself and its "Representatives" (as hereinafter defined), as
follows:

      1. All Evaluation Material heretofore or hereafter furnished to Recipient,
as well as the existence of the discussions between the parties hereto, shall be
deemed confidential and shall be kept in strict confidence under appropriate
safeguards. The term Evaluation Material, as used herein, does not include any
information which (i) as shown by written records, was lawfully in Recipient's
possession prior to any disclosure by the Company, provided that the source of
such information was not prohibited from transmitting the information to
Recipient or its Representatives by a contractual, legal, fiduciary or other
obligation, or (ii) is generally available to the public other than as a result
of disclosure by Recipient or Recipient's employees, agents or Representatives
or others acting on Recipient's behalf or others acquiring such information
through Recipient.

      2. Without the Company's prior written consent, Recipient shall not,
directly or indirectly: (i) disclose or reveal any Evaluation Material to any
person, firm or entity except to an appropriately limited group of Recipient's
directors, officers, employees, who are actively and directly participating in
the evaluation of the Transaction (collectively, "Representatives"), each of
whom shall be informed by Recipient of the







confidential nature of the Evaluation Material, be provided with a copy of this
letter agreement and agree to observe the same terms and conditions set forth
herein as if specifically named a party hereto; (ii) use the Evaluation Material
for any purpose other than in connection with the Transaction; or (iii) disclose
to any person or entity the terms, conditions or other facts with respect to the
Transaction (including the existence, whether actual or prospective, and status
thereof) or that Evaluation Material has been made available to Recipient. In
any event, Recipient shall be responsible for any disclosure by its
Representatives (other than pursuant to the terms and subject to the conditions
of this letter agreement) of the Evaluation Material, or the existence, content
or status of negotiations relating to the Transaction, and Recipient shall be
responsible for enforcing the confidentiality of the Evaluation Material and
will take such action as is necessary to prevent any disclosure thereof by any
of its Representatives.

      3. Upon written notice from the Company, Recipient will deliver promptly
to the Company all copies of Evaluation Material and all written or tangible
material containing or reflecting any information contained in the Evaluation
Material without retaining any copies, summaries, analyses or extracts thereof.
All documents, memoranda, analyses, compilations, studies, notes and other
writings prepared by Recipient or its Representatives based on or containing any
information contained in the Evaluation Material shall be destroyed.

      4. If Recipient is requested or required in a judicial, administrative or
governmental proceeding, or required by law to disclose any Evaluation Material
or the existence, content or status of negotiations relating to the Transaction,
Recipient shall provide the Company with prompt notice of such circumstance and
all related proceedings and information so that the Company may seek an
appropriate protective order, take other action deemed advisable by the Company
or, in the Company's sole discretion , waive Recipient's compliance with the
confidentiality provisions of this letter agreement. If, as a result of any such
request or requirement, Recipient is, in the opinion of its outside counsel,
compelled to disclose Evaluation Material or the existence, content or status of
negotiations relating to the Transaction (i) to any tribunal or else stand
liable for contempt or other censure or penalty, or (ii) pursuant to applicable
law, Recipient may disclose, without liability hereunder, that portion of the
Evaluation Material to such tribunal or pursuant to such law which Recipient's
outside counsel advises it in writing that it is legally compelled to disclose,
provided that Recipient has complied with the notice provisions of this Section
4.

      5. Recipient agrees on behalf of itself and its Representatives that
without the prior approval of the Company, neither Recipient nor its
Representatives (i) will approach employees of the Company, its customers, its
suppliers or any competitor of the Company to discuss any potential transaction
with the Company (other than a transaction in the ordinary course of the
Company's and Recipient's respective businesses) or (ii) approach the employees
of the Company to discuss any information with respect to the Company or its
business or otherwise receive or try to obtain information from any employee of
the Company.

      6. Until the earlier of (i) the execution by Recipient of the Transaction
Agreement or (ii) two years from the date of this letter agreement, Recipient,
on behalf of


                                       11



itself and its affiliates, agrees not to solicit the employment of, hire, or
otherwise interfere with the relationship of the Company or its affiliates with,
any individual, partnership, firm, corporation or other business organization
which is employed by or otherwise engaged to perform services for the Company or
any of its affiliates on an exclusive basis, including but not limited to any
independent contractors or organizations.

      7. Except as may be specifically provided in a definitive written
agreement providing for the Transaction (a "Transaction Agreement"), the Company
shall not be deemed to make or have made any representation or warranty, express
or implied, as to the accuracy or completeness of any Evaluation Material which
the Company or any of its affiliates or other person acting on its behalf may
furnish to Recipient, and the Company and its affiliates shall have no liability
to Recipient or any of its Representatives resulting from the use of any
Evaluation Material by Recipient or its Representatives (which shall be limited
to evaluating the Transaction).

      8. Recipient acknowledges and agrees that in the event of any breach of
this Agreement by it the Company may suffer irreparable harm and that money
damages would not be a sufficient remedy for such breach, and without prejudice
to any rights and remedies otherwise available to the Company, the Company shall
be entitled (i) to equitable relief by way of injunction and (ii) to compel
specific performance without the need of proof of actual damages. Recipient
further agrees to waive, and to cause its Representatives to waive, any
requirement for the securing or posting of any bond in connection with such
remedies. No failure or delay by the Company in exercising any right, power or
privilege hereunder shall operate as a waiver thereof, nor shall any single or
partial exercise thereof preclude any other or further exercise hereunder.

      9. Recipient acknowledges and agrees to advise its Representatives that
the Evaluation Material and the matters that are the subject of this letter
agreement constitute material, non-public information and that the United States
securities laws prohibit any person who has received such information from an
issuer from purchasing or selling securities of that issuer or from
communicating such information to any other person under circumstances in which
it is reasonably foreseeable that such person is likely to purchase or sell such
securities.

      10. In consideration of being furnished the Evaluation Material and in
view of the fact that the Evaluation Material consists of confidential and
non-public information, Recipient agrees that for a period of two years from the
date of this letter agreement, and other than pursuant to the terms of a
Transaction Agreement between Recipient and the Company, Recipient and its
Representatives shall not, nor shall Recipient permit any person or entity
controlled by Recipient, directly or indirectly, without the prior written
invitation or approval of the general partner (it being understood and agreed
that the entering into of this letter agreement shall not constitute such
invitation or approval), to:

            (i) Acquire or offer, seek or agree to acquire, or in any manner
      advise, induce, encourage or assist any other person to acquire, directly
      or indirectly, by purchase or otherwise, 2% or more of the partnership
      units ("units") of the Company; or


                                       12


            (ii) Initiate, or in any manner advise, induce, encourage or assist
      any other person to initiate, any tender or exchange offer for units of
      the Company, any merger, business combination, change in control, sale of
      assets, liquidation or other extraordinary transaction of or involving the
      Company or any other transaction between Recipient or its affiliates, on
      the one hand, and the Company and/or its unit holders, on the other hand,
      unless such offer or transaction is approved by the general partner;

      11. Recipient agrees that unless and until a Transaction Agreement between
the Company and Recipient has been executed and delivered, the Company has no
legal obligation of any kind whatsoever with respect to any transaction by
virtue of this letter agreement or otherwise except, in the case of this letter
agreement, for the matters specifically agreed to herein.

      12. This letter agreement shall be binding upon Recipient's successors and
assigns and shall inure to the benefit of and be enforceable by the Company's
successors and assigns.

      13. In the event that any provision of this letter agreement is determined
to be partially or wholly invalid, illegal or unenforceable, then such provision
shall be deemed to be modified or restricted to the extent necessary to make
such provision valid, binding and enforceable, or, if such provision cannot be
modified or restricted in a manner so as to make such provision valid, binding
and enforceable, then such provision shall be deemed to be excised from this
letter agreement and the validity, binding effect and enforceability of the
remaining provisions of this letter agreement shall not be affected or impaired
in any manner.

      14. This letter agreement constitutes the complete agreement of the
parties and terminates and supersedes any and all prior agreements, arrangements
and understandings, oral or written, between the parties concerning the subject
matter of this letter agreement.

      15. This letter agreement shall be construed (both as to validity and
performance) and enforced in accordance with, and governed by, the laws of the
State of California applicable to agreements made and to be performed wholly
within such jurisdiction, notwithstanding any choice of law principles, statutes
or rules to the contrary.

      16. This letter agreement may be waived, amended or modified only by an
instrument in writing signed by the party against which such waiver, amendment
or modification is sought to be enforced, and such written instrument shall set
forth specifically the provisions of this letter agreement that are to be so
waived, amended or modified.

      Please indicate your agreement with the foregoing by executing the
      accompanying copy of this letter agreement and returning it to us,
      whereupon it shall constitute a binding agreement as of the date first
      above written.


                                       13



                                Very truly yours,

                                   PROMETHEUS INCOME PARTNERS, a
                                   California limited partnership

                                   By:   PROMETHEUS DEVELOPMENT CO., INC.,
                                         a California corporation, its general
                                         partner

                                   By:   /s/ John J. Murphy
                                         ---------------------------------------
                                         John J. Murphy, Vice President

READ, ACCEPTED AND AGREED TO:

ASPEN SQUARE MANAGEMENT, INC.


By:    /s/ Jeremy Pava____________________________

Its:___Treasurer

Original sent by overnight mail



                                       14



FACSIMILE SENT:  Jul-22-2002    08:44AM   FROM:  Aspen Square Management


Aspen Square Management Inc.

180 Union Street, Suite 300
West Springfield Massachusetts 07088
Phone: 413-587-0772
FAX 413-786-9207


July 18, 2002                                  Via Facsimile and Federal Express

                                                                       EXHIBIT C

Vicki Mullins
Prometheus Income Partners
350 Bridge Parkway
Redwood City, CA 94065


Dear Vicki

We appreciate your willingness to quickly provide us with any pertinent
documents and other information that we require as part of our due diligence
review regarding the partnership interests and the underlying apartment
communities. In regards to this matter, we will require the following
information:

1.  Copies of all mortgages, loan documents, bond documents, regulatory
agreements. and all other documents pertaining to any current financing on each
property.

2.  A.L.T.A. Survey for each property.

3.  Title Insurance commitment and all documents constituting exceptions to
title.

4.  Copies of outstanding third-party service contracts and other agreements
affecting the. properties, including any assignable warranties.

5.  Copies of any engineering information and inspection reports, including
Phase I environmental studies and updated reports, plats, zoning ordinances and
compliance, business licenses, availability of utilities, or any other related
data.

6.  Copies of the municipal, state and federal Certificates of Occupancy, or the
equivalent, issued to date for each property.

7. Copies of the original operating income, expense and capital expenditures
records for each property from 1998, 1999, 2000, 2001 and the latest available
for 2002.


                                      -15-



8. A current rent roll for each property identifying and listing in detail
therein by tenant and by vacant area, as applicable; tenants, square footage
monthly rent, deposits, all concessions (financial and other), lease terms,
lease term extension options, defaulted tenant leases (financial or otherwise),
and tenant lease obligations of Seller, if any, and all legal matters as it
relates to the collection of rent.

9.  Copies of any termite inspections, and notice of violations including but
not limited to those regarding building and fire codes.

11. Disclosure of any legal matters affecting the properties or collection, of
rents or deposits.

11. All available plans and specifications; real estate and personal property
tax statements and valuation notices, all certificates of insurance and copies
of insurance policies. and all building permits.

12.  Al1 licenses and permits. liens and lawsuits.

13.  Copies of all ledger cards, general ledger (year-to-date cash disbursement
journal}, year-to-date vendor files, bank statements/deposit slips, and all open
invoices.

14. Insurance loss runs, rate history, occupancy percentage by month covering
1998-2002 to date.

15. Aging of accounts receivable and current staffing schedu1e.

16. Inventory of personal property.

19. True and complete copies of all tenant lease files and amendments thereto,
as well as any other agreement incident or related thereto which affect the
obligations of Seller and the affected tenant with respect to such leases.

20. Copies of any reports. structural, legal or other in nature, relating to the
damaged siding on each property.

Vicki, we request that you provide this information to us via overnight
delivery. Once we receive all such requested information, we assume our due
diligence review will begin.

Yours truly,


/s/ Jeff Strole

Jeff Strole


                                      -16-



                           PROMETHEUS INCOME PARTNERS

                               350 Bridge Parkway
                           Redwood City, CA 94065-1517
                                 (650) 596-5393

July 19, 2002

Aspen Square Management, Inc.
380 Union Street, Suite 300
West Springfield, Massachusetts 01089

Ladies and Gentlemen:

      This letter sets forth the essential terms of your proposed due diligence
review ("Diligence Review") on the basis of which we are willing to continue to
consider your possible acquisition of Prometheus Income Partners, a California
limited partnership (the "Partnership"). Our understanding of your proposal is
embodied in the following:

      1. You (or an entity to be formed by you) would acquire (i) each of the
Partnership's issued and outstanding limited partnership units for $1,859 in
cash per unit and (ii) the general partner interest in the Partnership now held
by Prometheus Development Co., Inc. (the "General Partner") for $1,500,000 in
cash, in each case payable in full upon consummation of the acquisition of the
limited partner's units and general partner's interest, collectively referred to
as "Proposed Acquisition".

      2. Except as expressly set forth herein, you have proposed substantively
all of the terms included in the definitive Agreement and Plan of Merger (the
"Definitive Agreement") attached hereto as Exhibit A, with the following
modifications:

            (a) mutual covenants of cooperation to obtain the approval of
      Proposed Acquisition by the Partnership's limited partners (including
      preparation of proxy materials) and such other approvals (if any) as may
      be required to complete the transaction;

            (b) no closing condition in respect of financing, refinancing or
      assumption of existing mortgages;

            (c) mutual representations that no broker, finder's, agency or
      similar fees to be paid;

            (d) with your proposed contract for the Proposed Acquisition, you
      shall deposit $3,000,000 into escrow with a mutually acceptable escrow
      agent on mutually acceptable terms. If no Proposed Acquisition is
      consummated, the $3,000,000 will be disbursed to the Partnership unless
      the Proposed Acquisition was not consummated as a result of either a
      breach by the Partnership or the rejection of the Proposed Acquisition by
      the Partnership's limited partners, in which case it will be returned to
      you; and


                                      -17-



            (e) the executed contract would be terminable by either party if the
      Proposed Acquisition has not been consummated on or prior to December 31,
      2002, other than as a result of a breach by such party.



3. You agree to commence at your expense your Diligence Review of the
Partnership and its properties promptly after execution of this letter. We agree
to reasonably provide to you and your representatives access to the properties,
books, records, documents, contracts and other records of the Partnership and
shall furnish you with copies of such documents and with such information with
respect to the affairs of the Partnership, as you reasonably deem necessary for
the purpose of conducting the Diligence Review. We will endeavor to make a
reasonable search to provide you with the records requested. It is agreed that
the items requested on Exhibit C [INTERPOLATED WRITTEN MATERIAL: "needs to be
attached" inserted] hereto shall be made available to you, to the extent that
they are within our possession and control, except that (i) you acknowledge that
we are unable to provide you with employee's personnel files and (ii) you and we
shall agree in good faith to limit certain of such information temporally,
including, e.g., that bank statements, etc., need only be made available for the
previous three years. Because the records you are requesting are so numerous, we
are only obligated to make reasonable efforts to assist your inspection. Upon
your designating the records you wish copied, we will send them to an outside
service at your expense. You agree that you will complete the Diligence Review
not later than August 1, 2002 (the "Diligence Cut-off Date").


PARAGRAPH AS WRITTEN BY PROMETHEUS INCOME PARTNERS

      3. You agree to commence at your expense your Diligence Review of the
Partnership and its properties promptly after execution of this letter. We agree
to reasonably provide to you and your representatives access to the properties,
books, records, documents, contracts and other records of the Partnership and
shall furnish you with copies of such documents and with such information with
respect to the affairs of the Partnership, as you reasonably deem necessary for
the purpose of conducting the Diligence Review. We will endeavor to make a
reasonable search to provide you with the records requested. It is agreed that
the items requested on Exhibit C hereto shall be made available to you, to the
extent that they are within our possession and control, except that (i) you
acknowledge that we are unable to provide you with employee's personnel files
and (ii) you and we shall agree in good faith to limit certain of such
information temporally, including, e.g., that bank statements, etc., need only
be made available for the previous three years. Because the records you are
requesting are so numerous, we are only obligated to make reasonable efforts to
assist your inspection. Upon your designating the records you wish copied, we
will send them to an outside service at your expense. You agree that you will
complete the Diligence Review not later than August 1, 2002 (the "Diligence
Cut-off Date").


      4. In consideration of the foregoing and of your previous representations
to us as to your ability to pay all cash pursuant to the Proposed Acquisition
with currently


                                      -18-



available liquid funds, we agree to postpone the taking of any vote on the
currently proposed merger until after the Diligence Cut-off Date.

      5. You acknowledge that (i) we will have to advise our limited partners
appropriately and from time to time regarding the matters set forth herein and
(ii) at any time prior to any written acceptance of your proposed offer (which
you agree to deliver prior to the Due Diligence Cut-off Date), the General
Partner has fiduciary duties to the Partnership and its limited partners in the
discharge of which it is obligated to consider alternatives that may be more
favorable to the limited partners. If on or prior to December 31, 2002 the
General Partner shall present and recommend to the limited partners any
transaction involving an acquisition of the limited partner units at a price in
excess of $1,859 per unit in which the acquiror, directly or indirectly, is an
affiliate of the General Partner, PIP Partners - General, LLC or PIP
Acquisition, LLC, [INTERPOLATED WRITTEN MATERIAL: "or is affiliated with or
controlled by Sanford Diller" inserted] and your proposal is not accepted, the
Partnership shall reimburse you for all reasonable out-of-pocket costs incurred
by you in conducting the Diligence Review up to an aggregate maximum amount of
[INTERPOLATED WRITTEN MATERIAL: "$50,000" inserted, "$25,000" deleted"].

      6. This letter supersedes all previous correspondence, discussions,
understandings and agreements between you and us or our respective officers,
directors, agents and representatives, provided that the letter agreement
regarding confidentiality and related matters attached hereto as Exhibit B shall
remain in full force and effect (and, for the avoidance of doubt, shall apply
with respect to the information provided in the course of the Diligence Review).



                                      -19-



      Except for the express terms of paragraphs 3, 4 and 6 hereof, each of
which shall and hereby does constitute a binding agreement: it is expressly
understood that this letter is non-binding and is intended to include part of
the basic terms and conditions under which the Partnership may enter into a
formal agreement with Aspen for the Proposed Acquisition; this letter shall only
serve to form part of the basis for a possible agreement which must be agreed
upon and executed by all parties prior to having any binding effect; this
non-binding letter is not intended to be contractual in nature and neither party
shall be obligated to proceed in good faith, or by any other standard, to enter
into an agreement based upon the terms set forth above; and a binding agreement
will only exist when the agreement is executed by duly authorized
representatives from all parties. Additionally, the Partnership reserves the
right to negotiate [INTERPOLATED WRITTEN MATERIAL: "and enter into a binding
agreement" deleted] with another party until a mutually acceptable agreement is
fully executed (subject to the last sentence of paragraph 5 above.)

      If the foregoing is in accordance with your understanding, please so
indicate by signing the enclosed copy of this letter in the space provided and
returning it to us on or prior to [INTERPOLATED WRITTEN MATERIAL: "12:00 P.M.,
E.D.T., July 22, 2002" inserted, "6:00 P.M., E.D.T., July 19, 2002" deleted].
Please fax a signed copy to the attention of Vicki Mullins at (650) 596-5377 and
send the original via overnight mail.


                                      -20-




                              PROMETHEUS INCOME PARTNERS

                              By:  Prometheus Development Co., Inc.,
                                   a California corporation, its general partner

                                 By: _/s/ Vicki Mullins_________________________

                                 Name: Vicki Mullins
                                 Title: Vice President

AGREED AND ACCEPTED:

ASPEN SQUARE MANAGEMENT, INC.


By:   __________________________

Name:
Title:



cc: Craig Seligman

attach


                                      -21-



FACSIMILE SENT:  Jul-19-2002           05:11PM   FROM:  Aspen Square Management




                                                         Aspen Square Management

380 Union Street, Suite 300
West Springfield, MA 01089
(413) 781-0712
(413) 781-1277 (fax]


Fax


To:            Vicki Mullins          From:      J. Strole
Company:                              Pages:     4
Fax:                                  Date:      7/19/02
Re:                                   cc:

CC:

[] Urgent   [] For Review  [] Please Comment  [] Please Reply  [] Please Recycle


Attached please find requested changes.


                                      -22-



                           PROMETHEUS INCOME PARTNERS

                               350 Bridge Parkway
                           Redwood City, CA 94065-1517
                                 (650) 596-5393

July 19, 2002

Aspen Square Management, Inc.
380 Union Street, Suite 300
West Springfield, Massachusetts 01089

Ladies and Gentlemen:

      This letter sets forth the essential terms of your proposed due diligence
review ("Diligence Review") on the basis of which we are willing to continue to
consider your possible acquisition of Prometheus Income Partners, a California
limited partnership (the "Partnership"). Our understanding of your proposal is
embodied in the following:

      1. You (or an entity to be formed by you) would acquire (i) each of the
Partnership's issued and outstanding limited partnership units for $1,859 in
cash per unit and (ii) the general partner interest in the Partnership now held
by Prometheus Development Co., Inc. (the "General Partner") for $1,500,000 in
cash, in each case payable in full upon consummation of the acquisition of the
limited partner's units and general partner's interest, collectively referred to
as "Proposed Acquisition".

      2. Except as expressly set forth herein, you have proposed substantively
all of the terms included in the definitive Agreement and Plan of Merger (the
"Definitive Agreement") attached hereto as Exhibit A, with the following
modifications:

            (a) mutual covenants of cooperation to obtain the approval of
      Proposed Acquisition by the Partnership's limited partners (including
      preparation of proxy materials) and such other approvals (if any) as may
      be required to complete the transaction;

            (b) no closing condition in respect of financing, refinancing or
      assumption of existing mortgages;

            (d) mutual representations that no broker, finder's, agency or
      similar fees to be paid;

            (d) with your proposed contract for the Proposed Acquisition, you
      shall deposit $3,000,000 into escrow with a mutually acceptable escrow
      agent on mutually acceptable terms. If no Proposed Acquisition is
      consummated, the $3,000,000 will be disbursed to the Partnership unless
      the Proposed Acquisition was not consummated as a result of either a
      breach by the Partnership or the rejection of the Proposed Acquisition by
      the Partnership's limited partners, in which case it will be returned to
      you; and


                                      -23-


            (e) the executed contract would be terminable by either party if the
      Proposed Acquisition has not been consummated on or prior to December 31,
      2002, other than as a result of a breach by such party.

      3. You agree to commence at your expense your Diligence Review of the
Partnership and its properties promptly after execution of this letter. We agree
to reasonably provide to you and your representatives access to the properties,
books, records, documents, contracts and other records of the Partnership and
shall furnish you with copies of such documents and with such information with
respect to the affairs of the Partnership, as you reasonably deem necessary for
the purpose of conducting the Diligence Review. We will endeavor to make a
reasonable search to provide you with the records requested. It is agreed that
the items requested on Exhibit C hereto shall be made available to you, to the
extent that they are within our possession and control, except that (i) you
acknowledge that we are unable to provide you with employee's personnel files
and (ii) you and we shall agree in good faith to limit certain of such
information temporally, including, e.g., that bank statements, etc., need only
be made available for the previous three years. Because the records you are
requesting are so numerous, we are only obligated to make reasonable efforts to
assist your inspection. Upon your designating the records you wish copied, we
will send them to an outside service at your expense. You agree that you will
complete the Diligence Review not later than August 1, 2002 (the "Diligence
Cut-off Date").

      4. In consideration of the foregoing and of your previous representations
to us as to your ability to pay all cash pursuant to the Proposed Acquisition
with currently available liquid funds, we agree to postpone the taking of any
vote on the currently proposed merger until after the Diligence Cut-off Date.

      5. You acknowledge that (i) we will have to advise our limited partners
appropriately and from time to time regarding the matters set forth herein and
(ii) at any time prior to any written acceptance of your proposed offer (which
you agree to deliver prior to the Due Diligence Cut-off Date), the General
Partner has fiduciary duties to the Partnership and its limited partners in the
discharge of which it is obligated to consider alternatives that may be more
favorable to the limited partners. If on or prior to December 31, 2002 the
General Partner shall present and recommend to the limited partners any
transaction involving an acquisition of the limited partner units at a price in
excess of $1,859 per unit in which the acquiror, directly or indirectly, is an
affiliate of the General Partner, PIP Partners - General, LLC or PIP
Acquisition, LLC, and your proposal is not accepted, the Partnership shall
reimburse you for all reasonable out-of-pocket costs incurred by you in
conducting the Diligence Review up to an aggregate maximum amount of $25,000.

      6. This letter supersedes all previous correspondence, discussions,
understandings and agreements between you and us or our respective officers,
directors, agents and representatives, provided that the letter agreement
regarding confidentiality and related matters attached hereto as Exhibit B shall
remain in full force and effect (and, for the avoidance of doubt, shall apply
with respect to the information provided in the course of the Diligence Review).

      Except for the express terms of paragraphs 3, 4 and 6 hereof, each of
which shall and hereby does constitute a binding agreement: it is expressly
understood that this letter



                                      -24-



is non-binding and is intended to include part of the basic terms and conditions
under which the Partnership may enter into a formal agreement with Aspen for the
Proposed Acquisition; this letter shall only serve to form part of the basis for
a possible agreement which must be agreed upon and executed by all parties prior
to having any binding effect; this non-binding letter is not intended to be
contractual in nature and neither party shall be obligated to proceed in good
faith, or by any other standard, to enter into an agreement based upon the terms
set forth above; and a binding agreement will only exist when the agreement is
executed by duly authorized representatives from all parties. Additionally, the
Partnership reserves the right to negotiate and enter into a binding agreement
with another party until a mutually acceptable agreement is fully executed
(subject to the last sentence of paragraph 5 above.)

      If the foregoing is in accordance with your understanding, please so
indicate by signing the enclosed copy of this letter in the space provided and
returning it to us on or prior to 6:00 P.M., E.D.T., July 19, 2002. Please fax a
signed copy to the attention of Vicki Mullins at (650) 596-5377 and send the
original via overnight mail.



                              PROMETHEUS INCOME PARTNERS

                              By:  Prometheus Development Co., Inc.,
                                   a California corporation, its general partner

                                 By:      _/s/ Vicki Mullins________

                                 Name: Vicki Mullins
                                 Title: Vice President

AGREED AND ACCEPTED:

ASPEN SQUARE MANAGEMENT, INC.


By:   __________________________

Name:
Title:



cc: Craig Seligman

attach




                                      -25-



                           PROMETHEUS INCOME PARTNERS

                               350 Bridge Parkway
                           Redwood City, CA 94065-1517
                                 (650) 596-5393

July 18, 2002

Aspen Square Management, Inc,
380 Union Street, Suite 300
West Springfield, Massachusetts 01089

Ladies and Gentlemen:

      This letter sets forth the essential terms of your proposed due diligence
review ("Diligence Review") on the basis of which we are willing to continue to
consider your possible acquisition of Prometheus Income Partners, a California
limited partnership (the "Partnership"). Our understanding of your proposal is
embodied in the following:

      1. You (or an entity to be formed by you) would acquire (i) each of the
Partnership's issued and outstanding limited partnership units for $1,859 in
cash per unit and (ii) the general partner interest in the Partnership now held
by Prometheus Development Co., Inc. (the "General Partner") for $1,500,000 in
cash, in each case payable in full upon consummation of the acquisition of the
limited Partner's units and General Partner's interest, collectively referred to
as "Proposed Acquisition".

      2. Except as expressly set forth herein, you have proposed substantively
all of the terms included in the definitive Agreement and Plan of Merger (the
"Definitive Agreement") attached hereto as Exhibit A, with the following
modifications:

            (a) indemnification of the existing General Partner for operation of
      the Partnership from and after the closing. Without limiting any
      indemnifications in the Partnership Agreement, with regard to any matters
      arising out of or relating to the construction defects which were the
      subject of the prior litigation against Weyerhaeuser et. al., the
      indemnity shall extend to pre-closing demands and claims;

            (b) mutual covenants of cooperation to obtain the approval of
      Proposed Acquisition by the Partnership's limited partners (including
      preparation of proxy materials) and such other approvals (if any) as may
      be required to complete the transaction;

            (c) no closing condition in respect of financing, refinancing or
      assumption of existing mortgages;

            (d) mutual representations that no broker, finder's, agency or
      similar fees to be paid;


                                      -26-



            (e) with your proposed contract for the Proposed Acquisition, you
      shall include a check for $3,000,000 payable to the Partnership. The check
      will be cashed by the Partnership upon execution of a binding contract by
      the Partnership. The $3,000,000 will be non-refundable to you unless the
      Proposed Acquisition was not consummated as a result of either a breach by
      the Partnership or the rejection of the Proposed Acquisition by the
      Partnership's limited partners; and

            (f) the executed contract would be terminable by either party if the
      Proposed Acquisition has not been consummated on or prior to December 31,
      2002, other than as a result of a breach by such party.

      3. You agree to commence, at your expense, your Diligence Review of the
Partnership and its properties promptly after execution of this letter. We agree
to reasonably provide to you and your representatives access to the properties,
books, records, documents, contracts and other records of the Partnership and
shall furnish you with copies of such documents and with such information with
respect to the affairs of the Partnership as is reasonably deemed necessary for
the purpose of conducting the Diligence Review. Upon your designating the
records you wish copied, we will send them to an outside service at your
expense. You agree that you will complete the Diligence Review not later than
August 1, 2002 (the "Diligence Cut-off Date").

      4. In consideration of the foregoing and of your previous representations
to us as to your ability to pay all cash pursuant to the Proposed Acquisition
with currently available liquid funds, we agree to postpone the taking of any
vote on the currently proposed merger until after the Diligence Cut-off Date.

      5. You acknowledge that (i) we will have to advise our limited partners
appropriately and from time to time regarding the matters set forth herein and
(ii) at any time prior to any written acceptance of your proposed offer (which
you agree to deliver prior to the Diligence Cut-off Date), the General Partner
has fiduciary duties to the Partnership and its limited partners in the
discharge of which it is obligated to consider alternatives that may be more
favorable to the limited partners.

      6. This letter supersedes all previous correspondence, discussions,
understandings and agreements between you and us or our respective officers,
directors, agents and representatives, provided that the letter agreement
regarding confidentiality and related matters attached hereto as Exhibit B shall
remain in full force and effect (and, for the avoidance of doubt, shall apply
with respect to the information provided in the course of the Diligence Review).

      Except for the express terms of paragraphs 3, 4 and 6 hereof, each of
which shall and hereby does constitute a binding agreement: it is expressly
understood that this letter is non-binding and is intended to include part of
the basic terms and conditions under which the Partnership may enter into a
formal agreement with Aspen for the Proposed Acquisition; this letter shall only
serve to form part of the basis for a possible agreement which must be agreed
upon and executed by all parties prior to having any binding effect; this
non-binding letter is not intended to be contractual in nature and neither party
shall be obligated to proceed in good faith, or by any other standard, to enter
into an agreement based upon the terms set forth above; and a binding agreement
will only exist when the agreement is executed by duly authorized
representatives from all parties. Additionally,


                                      -27-



the Partnership reserves the right to negotiate and enter into a binding
agreement with another party until a mutually acceptable agreement is fully
executed.

      If the foregoing is in accordance with your understanding, please so
indicate by signing the enclosed copy of this letter in the space provided and
returning it us on or prior to 12:00 P.M., E.D.T., July 19, 2002.



                              PROMETHEUS INCOME PARTNERS, a California limited
                              partnership

                              By:   Prometheus Development Co., Inc.,
                                    a California corporation, its general
                                    partner

                                 By: _/s/ Vicki R. Mullins_____

                                 Name: Vicki R. Mullins
                                 Title: Vice President

AGREED AND ACCEPTED:

ASPEN SQUARE MANAGEMENT, INC.


By:   __________________________

Name:
Title:


                                      -28-



                   Entry and Indemnity Agreement ("Agreement")


In conjunction with the completion of your property due diligence this is to
confirm our understanding of the conditions of your inspections.

Prometheus Income Partners, a California limited partnership, owns the following
properties: Alderwood Apartments located at 900 Pepper Tree Lane, Santa Clara,
California. Timberleaf Apartments located at 2147 Newhall Street, Santa Clara,
California, collectively referred to as "Properties".

In connection with any entry by Aspen Square Management, Inc., ("Aspen") or its
agents, affiliates, employees or contractors onto the Properties, Aspen shall
give Prometheus Income Partners (PIP) reasonable advance notice of such entry
and shall conduct such entry and any inspections in connection therewith so as
to minimize, to the greatest extent possible, interference with PIP's business
and the business of tenants and otherwise in a manner reasonably acceptable to
PIP. Without limiting the foregoing, prior to any entry to perform any on-site
testing, Aspen shall give PIP notice thereof, including the identity of the
company or persons who will perform such testing and the proposed scope of the
testing. In the event that Aspen proposes to perform any destructive or invasive
testing, PIP shall approve or disapprove, in its sole discretion, the proposed
destructive or invasive testing within two (2) business days after receipt of
such notice. PIP's failure to provide such notice shall be deemed disapproval.
If Aspen or its agents, affiliates, employees or contractors take any sample
from the Properties in connection with any such approved testing, at PIP's
request, Aspen shall provide to PIP a portion of such sample being tested to
allow PIP, if it so chooses, to perform its own testing. PIP or its
representative must be present to observe any testing or other inspection
performed on the Properties. Upon PIP's request, Aspen shall promptly deliver to
PIP copies of any reports relating to any testing or other inspection of the
Properties performed by Aspen or its agents, employees or contractors. Aspen
shall maintain, and shall assure that its contractors maintain, public liability
and property damage insurance in amounts and in form and substance acceptable to
PIP, to insure against all liability of Aspen and its agents, affiliates,
employees or contractors, arising out of any entry or inspections of the
Properties pursuant to the provisions hereof, and Aspen shall provide PIP with
evidence of such insurance coverage prior to entry to the Properties. Prometheus
Income Partners, Prometheus Development Co., Inc. and Prometheus Real Estate
Group, Inc. shall be named as an additional insured on such policy. Aspen shall
indemnify, defend with counsel acceptable to PIP, and hold PIP, Prometheus
Development Co., Inc. (PIP general partner), Prometheus Real Estate Group, Inc.
(property management company), its officers, directors, partners, agents,
affiliates, and employees harmless from and against any claim, damage, injury,
demand, cost, loss, liability, expense, penalty, fee, cause of action,
settlement, proceeding (whether civil, criminal, administrative or
investigative), including attorneys' fees, expert witness fees, court costs,
judgments, fines and amounts paid in settlement arising out of or in any way
connected with or relating to any entry on the Properties by Aspen, its agents,
affiliates, employees or contractors in the course of performing the
inspections, testings or inquiries


                                      -29-




provided for in this Agreement. The foregoing indemnity shall survive beyond the
completion of the due diligence period.

If the foregoing meets with your understanding, please countersign a copy of
this letter and return it to me.



PROMETHEUS INCOME PARTNERS, a California limited partnership

By:  PROMETHEUS DEVELOPMENT CO., INC., a
     California corporation, its general partner

By:   /s/ Vicki Mullins
     --------------------------------------
     Vicki Mullins, Vice President



The foregoing is agreed to:

- -----------------------------------------------
Harold Grinspoon


                                      -30-




                                                                                           
- ------------------------------------------------------------------------------------------------ ------------------
      CERTIFICATE OF INSURANCE                                                                   DATE(MM/DD/YY)
                                                                                                 Issue Date
- ------------------------------------------------------------------------------------------------
        PRODUCER                                     THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND
                                                     CONFERS  NO  RIGHTS   UPON  THE   CERTIFICATE   HOLDER.   THIS
                                                     CERTIFICATE  DOES NOT  AMEND,  EXTEND  OR ALTER  THE  COVERAGE
                                                     AFFORDED BY THE POLICIES BELOW.
                                                     --------------------------------------------------------------
Vendor's Insurance Agent                                             COMPANIES AFFORDING COVERAGE
Street Address                                       --------------------------------------------------------------
City, State, Zip                                      COMPANY   ABC Insurance Company
Phone Number                                                 A
- ---------------------------------------------------- ---------- ---------------------------------------------------
    INSURED                                           COMPANY   DEF Insurance Company
                                                             B
                                                     ---------- ---------------------------------------------------
                                                      COMPANY   GHI Insurance Company
Vendor Name                                                  C
Street Address                                       ---------- ---------------------------------------------------
City, State, Zip                                      COMPANY
                                                             D
- ---------------------------------------------------- ---------- ---------------------------------------------------
    COVERAGES

THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE  LISTED BELOW HAVE BEEN ISSUED TO THE INSURED  NAMED ABOVE FOR THE
POLICY PERIOD INDICATED.  NOTWITHSTANDING ANY REQUIREMENT,  TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH
REPSECT TO WHICH THIS  CERTIFICATE  MAY BE ISSUED OR MAY PERTAIN,  THE INSURANCE  AFFORDED BY THE POICIES  DESCRIBED
HEREIN IS SUBJECT TO ALL THE TERMS,  EXCLUSIONS AND CONDITIONS OF SUCH POLICIES.  LIMITS SHOWN MAY HAVE BEEN REDUCED
BY PAID CLAIMS.
- -------------------------------------------------------------------------------------------------------------------
 CO    TYPE OF INSURANCE             POLICY NUMBER       POLICY        POLICY                  LIMITS
                                                       EFFECTIVE     EXPIRATION
 LTR                                                      DATE          DATE
                                                       (MM/DD/YY)    (MM/DD/YY)
- ------ --------------------------- ------------------ ------------- -------------- ------------------ -------------
A              GENERAL LIABILITY   XXX123               01/01/00      01/01/01     GENERAL AGGREGATE  2,000,000
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
        X  COMMERCIAL GENERAL                                                      PRODUCTS-COMP/OP   1,000,000
           LIABILITY                                                               AGG
- ------ --- ---           ---       ------------------ ------------- -------------- ------------------ -------------
               CLAIMS        OCCUR                                                 PERSONAL & ADV     1,000,000
               MADE                                                                INJURY
- ------ --- ---           ---       ------------------ ------------- -------------- ------------------ -------------
           OWNER'S &                                                               EACH OCCURRENCE    1,000,000
           CONTRACTOR'S PROT
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
                                                                                   FIRE DAMAGE (Any   50,000
                                                                                   one fire)
- ------ --- ----------------------- ------------------ ------------- -------------- ------------------ -------------
                                                                                   MED EXP  (Any      5,000
                                                                                   one person)
- ------ --------------------------- ------------------ ------------- -------------- ------------------ -------------
B                                  XXX456               01/01/00      01/01/01     COMBINED SINGLE    1,000,000
       AUTOMOBILE LIABILITY                                                        LIMIT
- ------ ---                         ------------------ ------------- --------------
           ANY AUTO
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           ALL OWNED AUTOS                                                         BODILY INJURY
- ------ ---                         ------------------ ------------- -------------- (Per person)
           SCHEDULED AUTOS
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           HIRED AUTOS                                                             BODILY INJURY
- ------ ---                         ------------------ ------------- -------------- (Per accident)
           NON-OWNED AUTOS
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
                                                                                   PROPERTY DAMAGE
- ------ --- ----------------------- ------------------ ------------- -------------- ------------------ -------------
                                                                                   AUTO ONLY-EA
       GARAGE LIABILITY                                                            ACCIDENT
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           ANY AUTO                                                                OTHER THAN AUTO
                                                                                   ONLY:
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
                                                                                       EACH ACCIDENT
- ------ --------------------------- ------------------ ------------- -------------- ------------------ -------------
                                                                                           AGGREGATE
- ------ --------------------------- ------------------ ------------- -------------- ------------------ -------------
                                                                                   EACH OCCURRENCE
       EXCESS LIABILITY
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           UMBRELLA FORM                                                           AGGREGATE
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           OTHER THAN UMBRELLA
           FORM
- ------ --- ----------------------- ------------------ ------------- -------------- ------------------ -------------
C                                  XXX789               01/01/00      01/01/01     X    STATUTORY
       WORKERS' COMPENSATION AND                                                        LIMITS
       EMPLOYER'S LIABILITY
- ------                             ------------------ ------------- -------------- ---- ------------- -------------
                                                                                   EACH ACCIDENT      500,000



                                                        -31-




                                                                                             
- ------                 ----        ------------------ ------------- -------------- ------------------ -------------
       THE                  INCL                                                   DISEASE-POLICY     500,000
       PROPRIETOR/                                                                 LIMIT
       PARTNERS/       ----                                                        ------------------ -------------
       EXECUTIVE            EXCL                                                   DISEASE-EACH       500,000
       OFFICERS ARE:                                                               EMPLOYEE
- ------ --------------- ----        ------------------ ------------- -------------- ------------------ -------------

       OTHER


- ------ --------------------------- ------------------ ------------- -------------- --------------------------------

DESCRIPTION OF OPERATIONS/LOCATIONS/VEHICLES/SPECIAL ITEMS
Prometheus Real Estate Group, Inc., a California corporation, Prometheus Income Partners, a California limited
partnership, and Prometheus Development Co., Inc., a California corporation are named as additional insureds with
respect to above general liability and auto coverages.
Re:  Insured's work/services provided at Alderwood Apartments, 900 Pepper Tree Lane, Santa Clara, CA
- -------------------------------------------------------------------------------------------------------------------

CERTIFICATE HOLDER                                        CANCELLATION

Prometheus Real Estate Group, Inc.,                       SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELED
Prometheus Income Partners, and  Prometheus Development   BEFORE THE EXPIRATION DATE THEREOF, THE ISSUING COMPANY
Co., Inc.                                                 WILL [ENDEAVOR TO]* MAIL  30  DAYS WRITTEN NOTICE TO THE
900 Pepper Tree Lane                                      CERTIFICATE HOLDER NAMED TO THE LEFT, [BUT FAILURE TO
Santa Clara, CA 95051                                     MAIL SUCH NOTICE SHALL IMPOSE NO OBLIGATION OR LIABILITY
                                                          OF ANY KIND UPON THE COMPANY, ITS AGENTS OR
                                                          REPRESENTATIVES.]*
                                                          ---------------------------------------------------------

                                                          AUTHORIZED REPRESENTATIVE


                                                          Signature of Insured's Agent
ACORD 25-S (3/93)                                                                           ACORD CORPORATION 1993
- --------------------------------------------------------- ---------------------------------------------------------


*  Deleted in the original
                                                        -32-



                                                                                           
- ------------------------------------------------------------------------------------------------ ------------------
      CERTIFICATE OF INSURANCE                                                                   DATE(MM/DD/YY)
                                                                                                 Issue Date
- ------------------------------------------------------------------------------------------------
        PRODUCER                                     THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND
                                                     CONFERS  NO  RIGHTS   UPON  THE   CERTIFICATE   HOLDER.   THIS
                                                     CERTIFICATE  DOES NOT  AMEND,  EXTEND  OR ALTER  THE  COVERAGE
                                                     AFFORDED BY THE POLICIES BELOW.
                                                     --------------------------------------------------------------
Vendor's Insurance Agent                                             COMPANIES AFFORDING COVERAGE
Street Address                                       --------------------------------------------------------------
City, State, Zip                                      COMPANY   ABC Insurance Company
Phone Number                                                 A
- ---------------------------------------------------- ---------- ---------------------------------------------------
    INSURED                                           COMPANY   DEF Insurance Company
                                                             B
                                                     ---------- ---------------------------------------------------
                                                      COMPANY   GHI Insurance Company
Vendor Name                                                  C
Street Address                                       ---------- ---------------------------------------------------
City, State, Zip                                      COMPANY
                                                             D
- ---------------------------------------------------- ---------- ---------------------------------------------------
    COVERAGES

THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE  LISTED BELOW HAVE BEEN ISSUED TO THE INSURED  NAMED ABOVE FOR THE
POLICY PERIOD INDICATED.  NOTWITHSTANDING ANY REQUIREMENT,  TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH
REPSECT TO WHICH THIS  CERTIFICATE  MAY BE ISSUED OR MAY PERTAIN,  THE INSURANCE  AFFORDED BY THE POICIES  DESCRIBED
HEREIN IS SUBJECT TO ALL THE TERMS,  EXCLUSIONS AND CONDITIONS OF SUCH POLICIES.  LIMITS SHOWN MAY HAVE BEEN REDUCED
BY PAID CLAIMS.
- -------------------------------------------------------------------------------------------------------------------
 CO    TYPE OF INSURANCE             POLICY NUMBER       POLICY        POLICY                  LIMITS
                                                       EFFECTIVE     EXPIRATION
 LTR                                                      DATE          DATE
                                                       (MM/DD/YY)    (MM/DD/YY)
- ------ --------------------------- ------------------ ------------- -------------- ------------------ -------------
A              GENERAL LIABILITY   XXX123               01/01/00      01/01/01     GENERAL AGGREGATE  2,000,000
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
        X  COMMERCIAL GENERAL                                                      PRODUCTS-COMP/OP   1,000,000
           LIABILITY                                                               AGG
- ------ --- ---           ---       ------------------ ------------- -------------- ------------------ -------------
               CLAIMS        OCCUR                                                 PERSONAL & ADV     1,000,000
               MADE                                                                INJURY
- ------ --- ---           ---       ------------------ ------------- -------------- ------------------ -------------
           OWNER'S &                                                               EACH OCCURRENCE    1,000,000
           CONTRACTOR'S PROT
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
                                                                                   FIRE DAMAGE (Any   50,000
                                                                                   one fire)
- ------ --- ----------------------- ------------------ ------------- -------------- ------------------ -------------
                                                                                   MED EXP  (Any      5,000
                                                                                   one person)
- ------ --------------------------- ------------------ ------------- -------------- ------------------ -------------
B                                  XXX456               01/01/00      01/01/01     COMBINED SINGLE    1,000,000
       AUTOMOBILE LIABILITY                                                        LIMIT
- ------ ---                         ------------------ ------------- --------------
           ANY AUTO
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           ALL OWNED AUTOS                                                         BODILY INJURY
- ------ ---                         ------------------ ------------- -------------- (Per person)
           SCHEDULED AUTOS
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           HIRED AUTOS                                                             BODILY INJURY
- ------ ---                         ------------------ ------------- -------------- (Per accident)
           NON-OWNED AUTOS
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
                                                                                   PROPERTY DAMAGE
- ------ --- ----------------------- ------------------ ------------- -------------- ------------------ -------------
                                                                                   AUTO ONLY-EA
       GARAGE LIABILITY                                                            ACCIDENT
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           ANY AUTO                                                                OTHER THAN AUTO
                                                                                   ONLY:
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
                                                                                       EACH ACCIDENT
- ------ --------------------------- ------------------ ------------- -------------- ------------------ -------------
                                                                                           AGGREGATE
- ------ --------------------------- ------------------ ------------- -------------- ------------------ -------------
                                                                                   EACH OCCURRENCE
       EXCESS LIABILITY
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           UMBRELLA FORM                                                           AGGREGATE
- ------ ---                         ------------------ ------------- -------------- ------------------ -------------
           OTHER THAN UMBRELLA
           FORM
- ------ --- ----------------------- ------------------ ------------- -------------- ------------------ -------------
C                                  XXX789               01/01/00      01/01/01     X    STATUTORY
       WORKERS' COMPENSATION AND                                                        LIMITS
       EMPLOYER'S LIABILITY



                                                        -33-




                                                                                             
- ------                             ------------------ ------------- -------------- ---- ------------- -------------
                                                                                   EACH ACCIDENT      500,000
- ------                 ----        ------------------ ------------- -------------- ------------------ -------------
       THE                  INCL                                                   DISEASE-POLICY     500,000
       PROPRIETOR/                                                                 LIMIT
       PARTNERS/       ----                                                        ------------------ -------------
       EXECUTIVE            EXCL                                                   DISEASE-EACH       500,000
       OFFICERS ARE:                                                               EMPLOYEE
- ------ --------------- ----        ------------------ ------------- -------------- ------------------ -------------

       OTHER


- ------ --------------------------- ------------------ ------------- -------------- --------------------------------

DESCRIPTION OF OPERATIONS/LOCATIONS/VEHICLES/SPECIAL ITEMS
Prometheus Real Estate Group, Inc., a California corporation, Prometheus Income Partners, a California limited
partnership, and Prometheus Development Co., Inc., a California corporation are named as additional insureds with
respect to above general liability and auto coverages.
Re:  Insured's work/services provided at Timberleaf Apartments, 2l47 Newhall Street, Santa Clara, CA
- -------------------------------------------------------------------------------------------------------------------

CERTIFICATE HOLDER                                        CANCELLATION

Prometheus Real Estate Group, Inc.,                       SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELED
Prometheus Income Partners, and  Prometheus               BEFORE THE EXPIRATION DATE THEREOF, THE ISSUING COMPANY
Development Co., Inc.                                     WILL [ENDEAVOR TO]* MAIL  30  DAYS WRITTEN NOTICE TO THE
2l47 Newhall Street                                       CERTIFICATE HOLDER NAMED TO THE LEFT, [BUT FAILURE TO
Santa Clara, CA 95050                                     MAIL SUCH NOTICE SHALL IMPOSE NO OBLIGATION OR LIABILITY
                                                          OF ANY KIND UPON THE COMPANY, ITS AGENTS OR
                                                          REPRESENTATIVES.]*
                                                          ---------------------------------------------------------

                                                          AUTHORIZED REPRESENTATIVE


                                                          Signature of Insured's Agent
ACORD 25-S (3/93)                                                                           ACORD CORPORATION 1993
- --------------------------------------------------------- ---------------------------------------------------------


*  Deleted in the original