Exhibit 10.1

                                                                 


                           PURCHASE AND SALE AGREEMENT

     This Purchase And Sale Agreement (the  "Agreement")  is entered into on the
26th day of April  1999  between  Sheridan  Realty  Partners,  L.P.,  a Delaware
limited  partnership  ("Seller"),  and  AmeriVest  Properties  Inc.,  a Delaware
corporation  ("Purchaser").  For purposes of this Agreement,  each of Seller and
Purchaser  may be referred  to  individually  as a "Party",  and both Seller and
Purchaser may be referred to collectively as the "Parties".

                                    Recitals
                                    --------

     A. Seller owns a fee simple interest in three multi-tenant office buildings
located  at 3021,  3077 and 3091 East 98th  Street at the  intersection  of 98th
Street  and  North  Keystone  Avenue  (US  431) in north  central  Indianapolis,
Indiana,  consisting  of  approximately  95,836  total  rentable  square feet on
approximately  9.041 acres of land with 336 surface parking spaces, plus a 1,596
square  foot  free-standing  maintenance  building  together  with a reserve for
capital  improvements  in the  amount of $72,637 as of January 1, 1999 and which
may be utilized in accordance with the 1999 budget previously given to Purchaser
(the "Property"). Seller also owns a fee simple interest in a vacant parcel (the
"ROFR Parcel") of approximately  2.550 acres in size located in the east portion
of Keystone Office Park,  which Seller intends to develop.  The Property and the
ROFR Parcel are more particularly  described in Exhibit A attached to and made a
part of this Agreement.

     B. Purchaser desires to purchase from Seller, and Seller desires to sell to
Purchaser,  the  Property.  As part of its purchase of the  Property,  Purchaser
desires to receive, and Seller desires to grant, a first right to purchase and a
right of first refusal to purchase the ROFR Parcel pursuant to the terms of this
Agreement.


                                    Agreement
                                    ---------

     In consideration  of the premises and of the mutual covenants  contained in
this Agreement, the Parties agree as follows:

     1. Purchase And Sale Of Property.

          1.1 Purchase  And Sale.  Subject to the terms and  conditions  of this
     Agreement,  Seller  agrees to sell to Purchaser,  and  Purchaser  agrees to
     purchase from Seller, the Property.
       

          1.2 Purchase Price. The purchase price (the "Purchase  Price") for the
     Property  shall be  $7,944,000,  payable  in a  combination  of  stock  and
     assumption of debt as follows:
         
               1.2.1 The assumption of approximately $5,279,000 in mortgage debt
          (the "Mortgage  Debt") on the Property with all costs of assumption to
          be paid by Seller,  which  Mortgage Debt is  represented by a Mortgage
          Note,  Mortgage and Security  Agreement  and  Assignment of Leases and
          Rents (the "Mortgage") dated April 3, 1997 between Seller as Mortgagor

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          and Security Life of Denver Insurance Company, a Colorado corporation,
          as  Mortgagee  and  Lender.   The  amount  of  Mortgage  Debt  assumes
          additional  borrowing of approximately  $525,000 by Seller prior to or
          simultaneously with the Closing; plus

               1.2.2 The assumption commencing on the Effective Date (as defined
          in  Section  10 below) of all  obligations  and  liabilities  that are
          incurred under all guarantees,  indemnification  and other  agreements
          made by Seller and Alexander S. Hewitt ("Hewitt") in that Guaranty and
          Suretyship  Agreement  and  Environmental   Indemnification  and  Hold
          Harmless  Agreement  dated  April 3, 1997 and made by Seller,  William
          Atkins,  Jennifer Atkins  (collectively,  "Atkins") and Hewitt for the
          benefit of The First  National Bank of Boston  ("Prior  Mortgagee") in
          that Indemnity  Agreement  Regarding Hazardous Materials dated October
          18, 1996  ("Indemnification  Agreements")  but only to the extent that
          any such  obligations or liabilities  assumed by Purchaser result from
          acts or omissions occurring on or after the Effective Date; plus

               1.2.3  The  number of shares  (the  "Purchaser  Shares")  of  the
          restricted  common  stock of  Purchaser  determined  by  dividing  the
          difference  between the Purchase Price and the Mortgage Debt as of the
          Closing Date by $4.75.

          1.3 Adjustment Of Purchase Price And Purchaser Shares.

               1.3.1  Adjustment  For  Dividends.  If (i) the Effective Date (as
          defined  in  Section  10)  occurs  during  a  calendar   quarter  (the
          "Effective  Quarter")  in which  there also  occurs a record date (the
          "Effective   Quarter   Record  Date")  for   determination   of  those
          stockholders  of Purchaser that are entitled to receive a common stock
          dividend declared by Purchaser (the "Effective Quarter Dividend"), and
          (ii) the Effective  Date is not the same day as the Effective  Quarter
          Record  Date,  then the  Purchase  Price shall be reduced by an amount
          equal to the product of the number of Purchaser  Shares  multiplied by
          the amount of the Effective Quarter Dividend per share,  multiplied by
          a fraction the numerator of which is the difference between 90 and the
          number of days by which the  Effective  Date  precedes  the  Effective
          Quarter  Record Date and the  denominator of which is 90. For example,
          if the number of Purchaser  Shares is 560,000,  the Effective  Date is
          June 1, 1999,  the Effective  Quarter Record Date is June 30, 1999 and
          the  dividend  per share is $.12,  then the  Purchase  Price  would be
          reduced by $44,800,  which is equal to 560,000  multiplied by $.12 and
          multiplied  by 60/90.  To the extent that the Purchase  Price is to be
          reduced pursuant to the provisions of this paragraph and the reduction
          has not  occurred,  or a credit for the  reduction not yet paid, as of
          the dividend payment date for the Effective Quarter  Dividend,  Seller
          agrees that Purchaser may deduct from the Effective  Quarter  Dividend
          payable to Seller with respect to the Purchaser Shares an amount equal
          to the amount by which the Purchase Price is to be reduced pursuant to
          this Section 1.3.1.

               1.3.2 Issuance Of Additional  Shares;  Adjustment  Based On Stock
          Price. Purchaser agrees that if the Weighted Average Trading Price (as
          determined  in  accordance  with this  Section  1.3.2) of  Purchaser's
          common stock for the 15 trading days prior to the one year anniversary

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          date of the Closing Date is less than $4.75 per share,  then Purchaser
          shall issue to Seller the number of additional shares (the "Adjustment
          Shares") of  Purchaser's  common stock  determined in accordance  with
          this  Section  1.3.2.  The  number  of  Adjustment   Shares  shall  be
          determined by multiplying the number of Purchaser Shares by the excess
          of $4.75 over the  Weighted  Average  Trading  Price and  dividing the
          product by the Weighted Average Trading Price. By way of illustration,
          if the Weighted  Average  Trading Price is $4.00 per share and 561,053
          Purchaser Shares were delivered at Closing,  then Purchaser will issue
          to  Seller  105,197  Adjustment  Shares.  This  is  calculated  by (i)
          multiplying  $.75  (the  excess  of $4.75  over the  Weighted  Average
          Trading Price) by the 561,053  Purchaser Shares that were delivered at
          the Closing,  and (ii)  dividing the product by 4.00 to determine  the
          Adjustment  Shares.  The  Adjustment  Shares,  if any,  required to be
          delivered  pursuant to this Section 1.3.2 shall be delivered to Seller
          on or  before  the 30th day  following  the first  anniversary  of the
          Closing Date. The Weighted Average Trading Price of Purchaser's common
          stock shall mean the average  trading price  determined by multiplying
          the number of shares  involved  in each  individual  trade  during the
          period of  determination by the sale price for that trade and dividing
          the sum of all  those  amounts  by the total  number of shares  traded
          during the relevant period of determination.

               1.3.3  Additional  Adjustments.  The  adjustments to the Purchase
          Price and  Purchaser  Shares  pursuant to this Section 1.3 shall be in
          addition  to any  adjustments  and  prorations  required  pursuant  to
          Section 11 of this Agreement.
                            
     2.  Title.

          2.1 f this  Agreement,  , Seller has  furnished to Purchaser a current
     commitment for an A.L.T.A. owner's extended coverage title insurance policy
     (with  preprinted  exceptions  to  be  deleted)  issued  by  Chicago  Title
     Insurance Company (the "Title  Company"),  for the Property in at least the
     amount of the Purchase Price.  Included with the title  commitment shall be
     true,  correct,  and legible copies of all documents listed in the schedule
     of exceptions in the  commitment.  The title  commitment and the underlying
     exception documents are hereinafter  collectively referred to as the "Title
     Commitment".  Seller  will  arrange  to  have  the  Approved  Title  Policy
     delivered to Purchaser as soon as practicable  after Closing.  Seller shall
     pay the cost of obtaining the Title Commitment.


          2.2 Purchaser  shall,  within five (5) days after receipt of the Title
     Commitment  and  prior  to  the  signing  of  this  Agreement,  approve  or
     disapprove  the Title  Commitment  by delivering  written  notice to Seller
     ("Purchaser's  Title Notice")  specifying each title defect or matter which
     needs to be cured by Seller  ("Title  Defect")  in order for the  "Approved
     Title  Policy"  (as  defined  below) to be issued for the  Property  at the
     Closing.  For purposes of this Agreement,  the term "Approved Title Policy"
     shall mean the title policy to be issued by the Title Company,  in the form
     and  with  the  exceptions  and   endorsements   acceptable  to  Purchaser,
     designated  to Seller by  Purchaser  either  as part of  Purchaser's  Title
     Notice  or  separately  in  writing  on or  before  the  Contingency  Date.
     Purchaser  acknowledges  that,  unless  otherwise  expressly  agreed  to by
     Seller,  Purchaser  will be  responsible  for  paying  any title  insurance
     premiums  required to obtain any  endorsement  specified by Purchaser other
     than endorsements  required to deliver the Title Commitment as specified in
     Section 2.1 and any  endorsements  required by the  Mortgagee,  the cost of

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     which  shall be paid by  Seller.  Seller  agrees to cure all Title  Defects
     other  than the  Permitted  Title  Exceptions,  as defined  below,  up to a
     maximum cost to cure those Title  Defects of $10,000.  For purposes of this
     Agreement, the following shall constitute "Permitted Title Exceptions": (i)
     covenants,   conditions  and  restrictions  of  record  acceptable  to  the
     Purchaser  in  its  sole  discretion;  (ii)  private,  public  and  utility
     easements  and roads and highways  acceptable  to the Purchaser in its sole
     discretion;  (iii)  existing  leases and  tenancies  as listed in Exhibit B
     attached hereto and any leases entered into pursuant to Paragraph 5.4; (iv)
     general taxes for the year 1998 and subsequent  years;  (v) such additional
     exceptions as the Purchaser may consent to in writing;  (vi) liens accruing
     from debt created or assumed as part of the Purchase  Price,  and (vii) any
     other  exception  accepted or waived by Purchaser  in writing.  Within five
     business  days after  receiving  Purchaser's  Title  Notice,  Seller  shall
     deliver to Purchaser  written  notice  ("Seller's  Title  Notice") of those
     Title  Defects which Seller is unable or unwilling to eliminate or to cure.
     If Seller does not eliminate or cure all Title Defects other than Permitted
     Title  Exceptions,  then Buyer shall have the right,  by written  notice to
     Seller within five  business  days after receipt of Seller's  Title Notice,
     either to (i) waive its prior  notice as to the Title  Defects,  other than
     Permitted Title Exceptions,  that Seller is unwilling or unable to cure, or
     (ii) proceed  with the Closing and reduce the  Purchase  Price by an amount
     equal to  Purchaser's  good  faith  estimate  of the cost to cure the Title
     Defects, other than Permitted Title Exceptions, that Seller is unwilling or
     unable to cure but in no event  shall such  reduction  exceed the excess of
     $10,000 over the amount  previously spent by Seller to cure pursuant to the
     provisions of this paragraph, or (iii) terminate this Agreement.

          2.3 Seller shall deliver to Purchaser the Approved Title Policy issued
     by  the  Title  Company  in the  amount  of the  Purchase  Price,  insuring
     Purchaser  that  Purchaser has acquired  Seller's  interest in the Property
     subject only to the Permitted Title  Exceptions.  Seller shall pay the cost
     of the title  insurance  premium for (i) the Approved Title Policy with all
     standard pre-printed exceptions deleted, and (ii) the endorsements required
     by Mortgagee.  If Purchaser elects to obtain extended coverage or any other
     endorsements  to the  policy,  Purchaser  shall pay all costs and  expenses
     associated therewith and comply with any requirements thereof.

     3.  Environmental  Audit.  Seller  has  provided  Purchaser  with a Phase I
Environmental Site Assessment  (including asbestos  investigation)  dated August
20,  1996 for the  Property in  conformity  with the 1993  standards  set by the
American  Society for Testing and Materials  prepared by ATEC  Associates,  Inc.
(the "Phase I Report"). Purchaser has, at Purchaser's expense, ordered a revised
Phase I Report (the "Revised  Report") for the Property.  In the event hazardous
waste  or  materials  or  nonhazardous  materials  that  are  controlled  by the
Department of Health for the State of Indiana or by the Environmental Protection
Agency are revealed at the Property or  historical  uses as shown by the Phase I
Report or Revised Report that would indicate the possible presence of such waste
or materials in amounts  which are, or in the  reasonable  judgment of Purchaser
may result,  in  violation of  applicable  laws or the Phase I Report or Revised
Report  indicates  that Seller is in  violation  of any local,  state or federal
environmental  laws,  rules or regulations,  then Seller shall, at Seller's cost
and  expense,  reimburse  Purchaser  for the  cost of the  Revised  Report,  and
remediate  to the extent  required by law or to prevent a violation  of law, all
such waste,  materials and violations prior to Closing so long as the reasonable
estimate of the cost and expense to remediate  conditions  on the Property  does
not  exceed a total  of  $50,000  . In the  event  such  remediation  cannot  be
accomplished  by the Closing  Date,  the Closing Date shall be extended up to an
additional 90 days ("Extended  Closing Date") to allow Seller sufficient time to
complete the  remediation . If the reasonable  estimate of the cost to remediate
exceeds  $50,000 or the time to complete  the  remediation  will extend past the
Extended  Closing  Date,  then  Seller  shall have the right to  terminate  this
Agreement by providing  notice to Purchaser  and by  reimbursing  Purchaser,  as

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required above, for the cost of the Revised Report.  However,  Seller's right to
terminate  under this Section 3 shall not be effective  if,  within five days of
notice to Purchaser  of Seller's  termination  under this  Section 3,  Purchaser
delivers  to Seller a written  notice  that  Purchaser  will  proceed  with this
Agreement. In the event that Purchaser elects to proceed hereunder, the Purchase
Price shall be reduced by the lesser of Purchaser's good faith estimated cost to
remediate or $50,000,  and Seller shall continue to be responsible  for the cost
of the  Revised  Report,  which  shall be deducted  from the  Purchase  Price at
Closing  if not  paid  previously.  Notwithstanding  anything  to  the  contrary
contained herein,  Purchaser retains the right to object to matters disclosed in
the Phase I Report or Revised  Report in  accordance  with  Section  8.7 of this
Agreement.

     4.  Survey.  On or  before  ten  (10)  days  after  the  execution  of this
Agreement,  Seller  shall  furnish to Purchaser a current  ALTA/ACSM  land title
survey for the Property (the  "Survey")  updated by a land surveyor  licensed in
the State of Indiana. The Survey shall be certified to Seller, Purchaser and the
Title Company and  Mortgagee,  if requested by the  Mortgagee.  The Survey shall
reflect all  exceptions  to title (where  applicable)  as reflected on the Title
Commitment.  The Survey shall provide that physical  inspections at the Property
revealed no improvements situated upon or adjacent to the Property which are the
subject of any  encroachments,  and that no easements or rights-of-way have been
physically violated in any respect,  except as shown in the Survey. Seller shall
pay the cost of the Survey. Purchaser retains the right to object to any matters
disclosed  in the Survey or to the  failure  of the  Survey to conform  with the
provisions of this Section 4 in accordance with Section 8.7 of this Agreement.

     5. Warranty As To Leases.  Seller warrants that the attached Exhibit B is a
complete  list of all  leases,  tenancies,  rental  agreements,  and  concession
agreements presently encumbering the Property;  and that: 


          5.1 No person, firm, or corporation has any title,  interest, or right
     to  possession  of the Property or any portion of the Property as a lessee,
     tenant,  or  concessionaire  of Seller except as shown on Exhibit B and the
     names as set forth in Exhibit B are the names of all  tenants,  lessees and
     concessionaires  which have a right of possession at the Property,  whether
     or not under a written instrument (which shall be specified) as of February
     28, 1999; the date set forth for each tenant,  lessee and concessionaire is
     the date of the lease, tenancy, rental or concessionaire agreement pursuant
     to which the tenant,  lessee or concessionaire  occupied the Property as of
     February 28, 1999.

          5.2 All the  leases,  tenancies,  rental  agreements,  and  concession
     agreements  shown on Exhibit B are now in full force and effect;  except as
     set forth on Exhibit B, none of Seller nor any of the  tenants,  lessees or
     concessionaires  set forth on Exhibit B is in default in the performance of
     any such instrument or agreement; and, no tenant, lessee, or concessionaire
     is entitled to any rebate, concession, or other benefit except as set forth
     in the leases and agreements referred to in Exhibit B or in Exhibit B.

          5.3 The  rentals  and other sums due or to become due under the leases
     and  agreements  referred  to in  Exhibit  B  have  not  been  assigned  or
     encumbered  by Seller  except as  additional  security  under the  Mortgage
     against the  Property,  and will not be further  assigned,  encumbered,  or
     subjected  to any liens by Seller  prior to the  Closing  pursuant  to this
     Agreement.
                                                                    
          5.4 Until Closing, Seller shall continue its present rental efforts at
     the Property to rent vacant  space,  provided that after the date of mutual
     execution  of this  Agreement,  Seller  shall not execute any new leases or
     amend,  terminate  or accept the  surrender  of any  existing  tenancies or

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     approve any subleases  without the prior consent of Purchaser in accordance
     with  Section  20.2,  except  that  Seller  is  authorized  to  accept  the
     termination  of leases at the end of their existing terms and provided that
     if Seller  does  execute a new lease or amends,  terminates  or accepts the
     surrender  of  any  existing  tenancy  or  approves  any  sublease  without
     following the procedures set forth in Section 20.2, Purchaser may terminate
     this Agreement and this Agreement shall be of no further force or effect.

     6. Warranty As To Insurance. Seller warrants that the attached Exhibit C is
a complete  list of all  insurance  policies  now insuring the Property and that
Seller shall keep all such insurance policies in full force and effect until the
Closing. Seller warrants that Exhibit C shows (a) the number of each policy; (b)
the name of the  insurance  company  that  issued  each  policy;  (c) the  term,
expiration  date and property  covered by each policy;  (d) the premiums on each
policy;  and (e) the general nature and type of each policy set forth on Exhibit
C.  Seller  shall  obtain and  deliver to  Purchaser  at the Closing the written
approval of each insurance carrier to the assumption by Purchaser of each policy
specified by Purchaser in writing at least 45 days prior to the Closing Date. In
the  event  Seller  is unable to  obtain  all such  approvals  on or before  the
Closing,  Purchaser  shall  have an option to (i)  obtain  alternative  coverage
through another carrier or (ii) terminate this Agreement if no similar  coverage
is available from an alternative carrier.

     7. Corporate  Resolutions  Regarding Sale. At the Closing,  Purchaser shall
provide to Seller a copy of  resolutions  of the Board of Directors of Purchaser
authorizing  the  execution and  performance  of this  Agreement,  including the
authorization  of  issuance  of  Purchaser  Shares  and  Adjustment  Shares  and
directing the  submission  of the Agreement to a shareholder  vote on the record
date set by Purchaser,  which resolutions shall be certified by the secretary of
Purchaser.

     8. Contingencies. This Agreement is contingent upon each of the following:

          8.1 Financing.  Purchaser's obligations pursuant to this Agreement are
     expressly contingent upon the approval of Security Life of Denver Insurance
     Company as the  Mortgagee  pursuant to the  Mortgage  securing the Mortgage
     Debt to the transfer to Purchaser of Seller's  obligations  pursuant to the
     Mortgage.  If Purchaser  has not received  approval from the Mortgagee in a
     form reasonably acceptable to Purchaser prior to the Closing, Purchaser may
     terminate this Agreement  without  penalty upon written notice to Seller of
     Purchaser's intention to terminate.

          8.2 Leases.  Approval by Purchaser of all leases and lease  amendments
     encumbering  the Property.  Seller shall  deliver  copies of the leases and
     lease  amendments  to Purchaser  within ten calendar days after the date of
     mutual execution of this Agreement.
                

          8.3  Management  Records.  Approval by  Purchaser of true and complete
     copies of the Income and Operating  Expense  Statements  and  Statements of
     Assets and  Liabilities  relating to the Property since  October,  1996 and
     documentation,  including  estoppel  letters  in the form of Exhibit D from
     tenants  leasing at least 75% of the total  rentable  square footage of the
     Property  showing the current  status of each  lessee  under that  lessee's
     lease. Seller shall deliver copies of said financial and lease documents to
     Purchaser  within ten calendar  days after the date of mutual  execution of
     this Agreement.  Estoppel  letters shall be delivered to Purchaser no later
     than the Closing Date.

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          8.4  Service  Contracts.  Approval  by  Purchaser  of all  management,
     service and other  contracts  pertaining to the Property in accordance with
     Section 20.2.  Seller shall deliver copies of the  management,  service and
     other contracts pertaining to the Property to Purchaser within ten calendar
     days after the date of mutual execution of this Agreement
                 
          8.5 Personal Property. Approval by Purchaser of a list of all personal
     property now owned by Seller and used in connection  with the management of
     the  Property.  Seller  shall  deliver  said list of  personal  property to
     Purchaser within ten calendar days after the Effective Date
  
          8.6 Permits,  Licenses,  Etc.  Seller  shall  assign to Purchaser  all
     permits,  certificates  and  licenses  in its  possession  relating  to the
     Property.  Seller  shall  use its  best  efforts  to  assist  Purchaser  in
     obtaining  such  additional  permits,  certificates  or  licenses as may be
     required.  Seller shall obtain and deliver to  Purchaser a  certificate  or
     letter  from  the  applicable   zoning   authority  in  a  form  reasonably
     satisfactory  to Purchaser  stating that the Property is in compliance with
     all applicable zoning and building code rules and regulations.

          8.7  Investigation.  The  satisfactory  completion of Purchaser's  and
     Seller's respective  investigations pursuant to this Section 8.7. Purchaser
     and Seller  shall each have until 30 days after the date of delivery by the
     other of the Property  Information  or the  Corporate  Information  defined
     below,  as  the  case  may  be,  but  no  later  than  May  21,  1999  (the
     "Investigation  Period")  during which Seller shall furnish  Purchaser with
     all information and data including, but not limited to, accounts, books and
     records,  rent rolls,  leases,  loan documents,  agreements,  environmental
     reports,   plans,   specifications,   permits,   accounting  and  financial
     information  and any  other  information  of  whatsoever  kind or nature in
     Seller's  possession  ("Property   Information")  in  connection  with  the
     Property,  and Purchaser shall be permitted to inspect,  make  engineering,
     architectural,  environmental and economic studies, test soil and otherwise
     determine  ("Property  Investigation")  that the  Property is suitable  for
     Purchaser's intended purpose. During the Inspection Period, Purchaser shall
     furnish Seller with Property Information  regarding all of Purchaser's real
     property  assets,  and Seller shall be permitted to perform an  appropriate
     Property  Investigation  regarding  such  properties.  Purchaser also shall
     furnish Seller with any corporate information (the "Corporate Information")
     reasonably  requested  by  Seller.  If  either  Purchaser  or Seller is not
     satisfied,  in its  sole  discretion,  with  any  aspect  of the  Corporate
     Information,   the  Property  Information  or  the  Property  Investigation
     regarding the other's property,  the dissatisfied  party may terminate this
     Agreement by written notice to the other, delivered on or before the end of
     the  Investigation  Period,  in which case all  information  or other items
     shall be returned and each party shall be relieved of all obligations under
     this  Agreement.   Notwithstanding  the  foregoing,   if  Purchaser  orders
     environmental,  engineering,  appraisal  and  other  reports  within  three
     business  days  after  mutual  execution  of this  Agreement,  and all such
     reports  have not been  received by  Purchaser  in final form at least five
     business  days prior to the end of the  Investigation  Period,  or if, as a
     result  of  its  respective   investigation   Seller  reasonably   requests
     additional   Corporate   Information  or  Purchaser   reasonably   requests
     additional  Property  Information,  then the Investigation  Period shall be
     extended so that it ends five business  days after the last such  Corporate
     Information  is received  by Seller or such report or Property  Information
     has been  received in final form by  Purchaser,  but in no event later than
     June 30, 1999.

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          8.8  Property  Tax.  Approval by  Purchaser  of all real and  personal
     property  taxes  pertaining  to the  Property  as  evidenced  on the  Title
     Commitment  or other  documentation  provided by Seller or the  appropriate
     taxing authority.


          8.9  Stockholder  Approval.  The receipt by Purchaser of all approvals
     necessary  from  Purchaser's  stockholders  and  for  the  issuance  of the
     Purchaser  Shares and Adjustment  Shares to Seller in accordance  with this
     Agreement.

          8.10 Limited Partner Approval.  The receipt by Seller of all approvals
     necessary  from  Seller's  limited  partners as may be  required  under the
     Limited Partnership Agreement of Seller.
     
          8.11   Assumption   Of   Indemnification   Agreements.   Execution  of
     appropriate  indemnification agreements as contemplated by Section 1.2.2 of
     this Agreement.
                   

          In the  event  any of the  foregoing  contingencies  are not met at or
before  the  Closing,  and  absent an  agreement  of the  Parties  to resolve an
unsatisfied contingency, this Agreement shall terminate.

     9.  Deliveries At Closing.

          9.1 At Closing, Seller shall deliver to Purchaser the following:

               9.1.1 A special  warranty deed conveying title to the Property to
          Purchaser in a form  reasonably  acceptable  to Purchaser  and Seller.
          9.1.2 The Title Commitment.  9.1.3 Any other documents  required to be
          delivered pursuant to this Agreement. 9.1.4 At and after Closing, such
          additional and customary  documents necessary to carry out or complete
          the transaction set forth in this Agreement.

          9.2 At Closing, Purchaser shall deliver to Seller the following:

               9.2.1  A  stock   certificate   representing   Purchaser   Shares
          registered  in the  name of  Seller,  or the  individual  partners  of
          Seller, who have executed and delivered to Purchaser  subscription and
          registration  rights  agreements  in the form of Exhibit E attached to
          this Agreement,  as required by Section 21.8 and as may be directed by
          Seller,  or,  if such  stock  certificates  are not  available  at the
          Closing or Purchaser has not received a subscription  and registration
          rights  agreement  signed  by an  individual  partner  of  Seller,  an
          undertaking  signed by Purchaser's  stock transfer agent to issue such
          certificates  directly  to the Seller or the  individual  partners  of
          Seller upon  Purchaser's  receipt of the respective  subscription  and
          registration  rights  agreement  signed by the  individual  partner of
          Seller.

               9.2.2  At  and  after  Closing,  such  additional  and  customary
          documents necessary to carry out or complete the transaction set forth
          in this Agreement.

     10.  Closing Date.  Closing shall take place at a time to be established by
Purchaser and Seller but not later than the later to occur of: (i) five business
days after  Purchaser's  receipt of stockholder  approval as required by Section

                                       8



8.9 or (ii) the  approval of  Mortgagee  of the  assumption  by Purchaser of the
Mortgage obligations as required by Section 8.1 and in no case later than August
31, 1999 (the "Closing" or "Closing Date"). to be effective as of12:01 AM on the
first day of the calendar month during which the Closing occurs (the  "Effective
Date").  The  Closing  shall take place at the  offices of  Purchaser  or at the
offices of Purchaser's counsel, as determined by Purchaser.

     11. Prorations And Closing Costs. At Closing,  the following items shall be
prorated  between  Purchaser and Seller as of 12:01 a.m. on the Closing Date and
shall be adjusted  against the Purchase Price and payable in certified  funds at
the Closing:
  

          11.1 Real and personal property taxes which are due as of the Closing,
     shall be paid by Seller or allowed as a credit against the Purchase  Price.
     All unpaid real estate  taxes which were a lien in 1998 and will be due and
     payable in 1999 will be charged to Seller and  allowed as a credit  against
     the Purchase Price. All other real estate taxes and other assessments which
     will become a lien in 1999 against the Property but are not due and payable
     until 2000 shall be prorated as of the Closing  Date,  and if the amount of
     taxes due for 1999 but not  payable  until  2000 has not yet been  fixed by
     Closing,  such taxes shall be prorated based upon the most recent available
     mill levy applied to the latest  assessed  valuations and any  assessments,
     special or general.  All other real  estate and  personal  property  taxes,
     charges  and  assessments  of  municipal  or  other  improvements   payable
     thereafter shall be paid by Purchaser.

          11.2  Seller  and  Purchaser  shall  cooperate  to cause  all  utility
     suppliers furnishing  electrical,  gas, water, or other utility services to
     the  Property  to read all utility  meters on the Closing  Date and to bill
     Seller separately for all such charges.  Purchaser shall be responsible for
     making its own  arrangements  with respect to future billings and deposits.
     In the event any such  utility  supplier  refuses to read and bill any such
     utilities,  then such  utility  charges  shall be  prorated at or after the
     Closing  in  accordance  with this  Section  11 based upon the bill for the
     preceding billing period.

          11.3 Any insurance policies held in Seller's name that are not assumed
     by Purchaser  shall be cancelled  as of the Closing  Date.  Premiums on all
     insurance policies applicable to the Property that are assumed by Purchaser
     shall pro rated in accordance with this Section 11.

          11.4 The portion of current rents and prepaid rents, additional rents,
     reimbursements  and/or  other sums  payable by tenants  under any leases or
     subleases relating to the Property ("Leases"),  if any, collected by Seller
     prior to the Closing Date which are allocable to the period commencing with
     and  following  the  Closing  Date shall be paid to  Purchaser  at Closing.
     Notwithstanding  the foregoing,  if any past-due rents,  additional  rents,
     reimbursements  and/or other sums  (collectively,  "Rentals")  are owing by
     tenants  under the Leases at the Closing  Date,  all such Rentals  shall be
     prorated  on the  basis of the time  period  for which  they were due,  and
     Purchaser  shall within ten (10) days after receipt and clearance of checks
     pay to  Seller  any  Rentals  which  pertain  to the time  period  prior to
     Closing.

          11.5 All charges  and  revenues  arising out of the service  contracts
     which  Purchaser  has not elected to terminate  shall be prorated as of the
     Closing.  All charges  and  revenues  arising out of the service  contracts
     which Purchaser has elected to terminate shall be paid by Seller as long as
     Purchaser  notifies  Seller not less than 35 days  prior to  Closing  which
     contracts will be terminated.

                                       9




          11.6 Any prepaid expenses relating to the Property.

     Seller shall be responsible for the cost of (i) the owner's title insurance
policy;  (ii)  updating the Survey;  (iii)  one-half of any escrow fees and real
estate  transfer,  stamp  or  documentary  taxes;  (iv) any  sales or use  taxes
relating to the transfer of personal property to the Purchaser; and (v) all fees
and costs  (except  Purchaser's  attorneys'  fees)  related to assumption of the
Mortgage Debt by Purchaser.  Purchaser shall be responsible for: (i) one-half of
any escrow fees and real  estate  transfer,  stamp or  documentary  taxes;  (ii)
recording  the  special  warranty  deed  from  Seller  to  Purchaser;  and (iii)
mortgagee's  title  insurance,  if any.  Seller and Purchaser shall each pay the
fees and disbursements of its respective counsel and any inspecting  architects,
engineering or other consultants hired by such party. In addition,  Seller shall
deliver to Purchaser all security deposits  previously  collected by Seller from
tenants, if any, and any prepaid rent collected by Seller.

     Purchaser and Seller agree to calculate all prorations  required under this
Section 11 with  respect to those items which  cannot be  accurately  or finally
determined at Closing and to make the applicable  payments  resulting from those
calculations  within 30 days after Closing.  Each of these calculations shall be
apportioned  retroactive  to the Effective  Date. If any errors or omissions are
made regarding  adjustments  and  prorations the parties shall make  appropriate
corrections  promptly upon the discovery thereof. If any estimations are made at
the Closing  regarding  adjustments  or  prorations,  the parties shall make the
appropriate  corrections  promptly when accurate  information becomes available.
Any corrected  adjustment or proration  shall be paid in cash to the appropriate
party within fifteen (15) days of the correction or adjustment.  Notwithstanding
anything  to the  contrary  in this  Section  11, any right to a  correction  or
adjustment shall terminate one (1) year after the Closing.

     12. Assessments.  Any bonds or improvement assessments which are a recorded
lien on the Property shall be assumed by Purchaser at the Closing.

     13.  Casualty Loss. If, prior to Closing,  the Property shall be damaged or
destroyed by fire, explosion, disaster, earthquake, accident, disturbance or act
of God  (except any damage or  destruction  caused by  Purchaser  or its agents,
servants or  employees),  within  five days of becoming  aware of such damage or
destruction,  Seller shall deliver to Purchaser  written  notice thereof and the
estimated  cost of repair,  based upon Seller's  reasonable  good faith business
judgement.  If the Property is "  substantially  damaged" i.e. (1) the estimated
cost of repairing such damage or destruction  exceeds in the aggregate $100,000,
or (2) the casualty materially and adversely affects access to the Property,  or
(3) the casualty  would give one or more tenants with an aggregate  total rental
square  footage of more than 10,000  square feet,  the right to terminate  their
respective  leases,  or (4) the casualty would cause the rent of any one or more
tenants  to abate for any  period of time  unless  Seller is  willing  to credit
Purchaser  for  the  full  amount  of the  abated  rent,  this  Agreement  shall
automatically  terminate  unless  Purchaser  delivers to Seller  written  notice
waiving the right to terminate within five days following  delivery to Purchaser
of Seller's notice of such damage.  If Purchaser  delivers notice of such waiver

                                       10



within such five-day  period the  transactions  required by this Agreement shall
nevertheless  close  on the  scheduled  date,  according  to the  terms  of this
Agreement,  and Seller shall assign to Purchaser  all of Seller's  rights to any
insurance proceeds payable as a result of such damage or destruction, except for
any claim for rent loss incurred  prior to the Closing,  and the Purchase  Price
shall be reduced by the amount of the estimated cost of repairing such damage or
destruction  that is not paid by insurance  up to a maximum of $100,000.  If the
estimated cost of repairing, such damage or destruction is equal to or less than
$100,000,  and if the casualty is not one that  otherwise  gives  Purchaser  the
right to terminate this Agreement pursuant to this Section 13, the Closing shall
proceed and Seller  shall  assign to  Purchaser  all of  Seller's  rights to any
insurance proceeds payable as a result of such damage or destruction, except for
any claim for rent loss incurred  prior to the Closing,  and the Purchase  Price
shall be reduced by the amount of the estimated cost of repairing such damage or
destruction  that is not paid by insurance.  If any damage to or  destruction of
the Property is caused by Purchaser or its agents,  servants or employees,  then
the transactions  required and contemplated by this Agreement shall nevertheless
close according to the terms of this  Agreement,  there shall be no reduction of
the Purchase Price and Purchaser shall be solely  responsible for all repairs or
reconstruction  unless such damage or  destruction  is covered by insurance,  in
which event all insurance  proceeds  otherwise payable to Seller (except for any
claim for rent loss incurred prior to Closing) shall be assigned to Purchaser.

     14.  Representations And Warranties By Seller. Seller hereby represents and
warrants to Purchaser  that the following are true and correct as of the date of
the execution of this Agreement and that the following shall be true and correct
as of the Closing:
     
          14.1 Seller is duly organized,  validly existing, and in good standing
     under the laws of the State of Delaware and has the power and  authority to
     carry on its business and to enter into this Agreement and the transactions
     contemplated hereby.

          14.2 The  improvements  situated on the Property are  connected to all
     public utility systems (including without limitation the sewer system) and,
     to the best of Seller's knowledge,  all utility systems are operational and
     in compliance with all applicable public and private requirements.

          14.3  Except as  previously  disclosed  to  Purchaser,  to the best of
     Seller's  knowledge,  there  are  no  actions,  suits,  investigations,  or
     proceedings  at law or in  equity  by or  before  any  court,  governmental
     instrumentality,  commission,  or other agency now pending or threatened or
     against or affecting Seller or any of Seller's properties or rights, before
     any court,  arbitrator,  or  administrative  or governmental body which may
     result in an adverse change in Seller's business or any of their respective
     conditions,  financial or otherwise. Further, Seller is not in default with
     respect  to any  order,  writ,  injunction,  or  decree of any court or any
     governmental agency or department.

          14.4  Except  for the  requirement  that the sale of the  Property  to
     Purchaser be approved by the limited  partners of Seller as contemplated by
     Section   8.10  of  this   Agreement,   Seller   and   Seller's   appointed
     representatives  have full power,  authority and legal right to execute and
     deliver  and to  perform  and  observe  the  provisions  hereof  and of the
     transactions   contemplated  hereby.  Seller  is  not  in  default  in  the
     performance  of any  obligation,  covenant or condition  in any  agreement,
     decree, or order to which Seller is party or by which Seller is bound or to
     which any of Seller's  properties are subject,  including  this  Agreement.
     Seller  is not a  party  to a  contract  or  agreement  or  subject  to any
     restriction which adversely affects Seller's business,  property, assets or
     financial  condition.  Seller is not a party to or otherwise subject to any
     contract or agreement which restricts or otherwise  affects  Seller's right
     or  ability  to  undertake  the  transactions  contemplated  hereby  or the
     performance of any of its respective terms.

                                       11




          14.5  Seller's  execution  of this  Agreement  will  not  violate  any
     provision of law or any agreement  previously  entered into, other than the
     Mortgage  and  Indemnification   Agreements  which  are  being  assumed  by
     Purchaser  to the  extent  set forth in  Section  1.2.2 as a  condition  of
     Closing and for which Seller shall obtain all required  consents or waivers
     prior to Closing.

          14.6  No tax  liability  which  is now  past  due,  including  without
     limitation,  income tax liability,  of any nature has been asserted against
     Seller or the Property by any taxing authority.

          14.7 Neither this Agreement nor any other  document,  certificate,  or
     statement  furnished to Purchaser  by Seller or any partner,  employee,  or
     affiliate of Seller or, to the best knowledge of Seller, by any third party
     in  connection  with the  transactions  contemplated  hereby,  contains any
     untrue  statement  of  material  fact or  omits to  state a  material  fact
     necessary in order to make the statements  contained herein and therein not
     misleading.  All of Seller's  financial  statements  submitted to Purchaser
     have  been  prepared  in  accordance  with  generally  accepted  accounting
     principles consistently applied, unless otherwise expressly noted.

          14.8  To  the  best  of  Seller's  knowledge,  no  consent,  approval,
     authorization,  permit  or  license  from  any  federal,  state,  or  local
     regulatory  authority  is  required  in  connection  with the  transactions
     contemplated herein.

          14.9 To the best knowledge of Seller, the improvements situated on the
     Property are complete and  structurally  sound and all  mechanical  systems
     contained therein are adequate for their intended use and in proper working
     condition.  Other than as previously  disclosed to Purchaser,  the Property
     does not require any major repairs or further work.

          14.10 Seller  represents  and warrants that based on its review of the
     Phase I Report and its ownership and  management of the Property  since the
     date of such report,  neither the Property nor Seller,  nor, to the best of
     Seller's knowledge,  any previous owner of the Property, is in violation of
     or subject to any existing,  pending or threatened investigation or inquiry
     by  any  governmental  authority  or any  remedial  obligations  under  any
     applicable  laws,  rules  or  regulations   pertaining  to  health  or  the
     environment, including, without limitation, the Comprehensive Environmental
     Response, Compensation and Liability Act of 1980, as amended ("CERCLA") and
     the Resource  Conservation  and Recovery Act of 1976, as amended  ("RCRA"),
     and  Seller  further  represents  and  warrants  that  there  are no facts,
     conditions or circumstances  known to Seller which could result in any such
     investigation or inquiry if such facts,  conditions and  circumstances,  if
     any, were fully disclosed to the applicable governmental authority.  Seller
     represents  and  warrants  that Seller has not  obtained  and Seller is not
     required to obtain any  permits,  licenses,  or similar  authorizations  to
     construct, occupy, operate or use any buildings, improvements,  fixtures or
     equipment in connection with the Property  constructed or to be constructed
     by reason  of any  applicable  environmental  laws,  rules or  regulations.
     Seller  represents  and  warrants  that Seller has no knowledge of any oil,
     toxic or hazardous  substances  or solid wastes  having been disposed of or
     released  on  the  Property  other  than  in  connection  with  the  normal
     operations of an office building in a manner that is in compliance with all
     applicable  laws,  rules  or  regulations   pertaining  to  health  or  the
     environment, or any asbestos within the improvements.

          14.11  The  address  set  forth  below is  Seller's  true and  correct
     residence,  and Seller has no present  intention  of becoming a resident of
     any other state or jurisdiction.

                                       12




          14.12 Seller is the sole  beneficial,  legal,  and record owner of the
     Property.

          14.13 Except as  otherwise  set forth  herein,  Seller has full power,
     authority, and legal right to sell the Property.

          14.14  There  are no  claims,  liens,  or  other  encumbrances  on the
     Property except for Permitted Title Exceptions and the Mortgage.

          14.15 This  Agreement  constitutes  a legal and binding  obligation of
     Seller, and is valid and enforceable  against Seller in accordance with its
     terms.

          14.16 There are no other  restrictions on Seller's right or ability to
     sell the Property to Purchaser, except the Mortgage.

          14.17 Seller has furnished  Purchaser with true and complete copies of
     the audited  Statement  of Assets and  Liabilities  for the  Property as of
     December 31, 1998 and the  Property's  audited  statement of operations for
     the year ended December 31, 1998 (the "Property Financial Statements"). The
     Property  Financial  Statements  were prepared in accordance  with Seller's
     books and records and in  accordance  with  generally  accepted  accounting
     principles  applied on a consistent basis throughout the periods  indicated
     and fairly  present the financial  position of the Property as of the dates
     and for the periods indicated.

          On or before three  business  days prior to the Closing  Date,  Seller
     shall  furnish  Purchaser  with  an  unaudited   Statement  of  Assets  and
     Liabilities  for  the  Property  as of the  last  day of  the  month  ended
     immediately  prior  to the  third  business  day  prior to  Closing  and an
     unaudited  income statement for the period beginning on January 1, 1999 and
     ending on the last day of the month immediately prior to the third business
     day prior to Closing (the "Property  Updated  Financial  Statements").  The
     Property  Updated  Financial  Statements  have been or will be  prepared in
     accordance with Seller's books and records and in accordance with generally
     accepted accounting principles applied on a consistent basis throughout the
     periods indicated,  subject to normal year-end  adjustments.  Seller has no
     reason to  believe  that  such  adjustments,  other  than  normal  year-end
     adjustments to depreciation  and  amortization,  will be  substantially  in
     excess of  adjustments  in prior years relative to the volume and nature of
     operations  for  each  of  those  years.  The  Property  Updated  Financial
     Statements in all material  respects fairly present the financial  position
     of the Property,  as of the dates and for the periods indicated.  There are
     no  material  liabilities  known  to  Seller  (whether  accrued,  absolute,
     contingent or otherwise) which are not described,  shown or provided for in
     the financial  statements  referred to in this section or otherwise in this
     Agreement  except those arising since the respective  dates of the Property
     Updated Financial  Statements in the ordinary course of Seller's  business.
     Seller  further  represents  that as of the Closing,  the Property  Updated
     Financial  Statements will not vary from the Property Financial  Statements
     in any  material  respect.  If there is a material  change in the  Property
     Updated Financial Statements from the Property Financial  Statements,  this
     Agreement may be terminated by Purchaser by notice to Seller.

          14.18 Seller  understands that Purchaser Shares and Adjustment  Shares
     have not been  registered  under federal or state  securities  laws and are
     "restricted"  securities as defined in Rule 144 under the Securities Act of
     1933, as amended (the "Act").  Seller understands that Seller may not sell,
     offer for  sale,  transfer,  pledge or  hypothecate  Purchaser  Shares  and

                                       13



     Adjustment  Shares in the absence of an  effective  registration  statement
     covering  that  transaction,   under  all  applicable   federal  and  state
     securities laws, unless that transaction is exempt from registration  under
     all applicable  federal and state securities  laws,  including an exemption
     under Rule 144  promulgated  under the Act.  Seller  acknowledges  that the
     distribution described in Section 20.8 will comply with all such applicable
     federal and state securities laws.  Seller and each transferee of Purchaser
     Shares  and  Adjustment  Shares  pursuant  to  Section  20.8 shall sign and
     deliver to  Purchaser a  Subscription  Agreement  and  Registration  Rights
     Agreement  in the form of  Exhibit  E  attached  to and made a part of this
     Agreement  concerning their respective  acquisition of Purchaser Shares and
     Adjustment Shares.

     The foregoing  representations  and  warranties are true and accurate as of
     the date hereof,  shall be true and  accurate as of the Closing,  and shall
     survive the Closing for a period of twenty-four (24) months after the later
     of the Closing Date or termination of the Management  Agreement referred to
     in Section  20.2  ("Survival  Date"),  except for the  representations  and
     warranties set forth in Sections 14.1, 14.4 and 14.5,  which shall survive.
     Seller further agrees to notify Purchaser  immediately in writing if any of
     the foregoing  representations  or warranties herein are breached or are no
     longer accurate at any time prior to and including Closing.

     15.   Representations   And  Warranties  By  Purchaser.   Purchaser  hereby
represents  and warrants to Seller that the following are true and correct as of
the date of the execution of this Agreement and that the following shall be true
and correct as of the Closing:
       

          15.1  Purchaser  is  duly  organized,  validly  existing,  and in good
     standing  under  the laws of the  state of  Delaware  and has the power and
     authority to carry on its  business,  and to enter into this  Agreement and
     the transactions contemplated hereby.

          15.2 The authorized  capital stock of Purchaser consists of 10,000,000
     common shares, of which 1,658,770 shares are issues and outstanding. All of
     the Purchaser Shares and Adjustment Shares are validly authorized and, upon
     issuance to Seller and Seller's  partners,  will be validly  issued,  fully
     paid and  non-assessable.  Except for the above  shares and as disclosed in
     the Annual  Report on Form  10-KSB for the year ended  December  31, 1998 ,
     there is no outstanding capital stock, and there are no outstanding rights,
     options, calls, subscriptions,  warrants,  agreements or commitments of any
     character relating to, nor any outstanding securities convertible into, the
     issued or unissued  capital  stock of Purchaser.  No holder of  Purchaser's
     shares is  entitled  to  preemptive  rights.  Other than (i) the  quarterly
     dividend of $.12 per share declared on March 10, 1999 with a record date of
     March 31, 1999 and a payment date of April 14, 1999, and (ii) the quarterly
     dividend in an amount not to exceed  $.13 per share  planned to be declared
     in June 1999 with a record date in June or July 1999 and a payment  date in
     July 1999,  since  December 31,  1998,  Seller has not declared or paid any
     dividend on, or declared or made any  distribution  of, or  authorized  the
     creation  or  issuance  of,  or  authorized  or  effected  any split or any
     recapitalization  of, any of its capital  stock,  or directly or indirectly
     redeemed,  purchased or otherwise acquired any of its shares.  There are no
     outstanding contractual  obligations of Purchaser to repurchase,  redeem or
     otherwise acquire any shares of Purchaser's capital stock.

          15.3 Except as previously  disclosed to Seller,  there are no actions,
     suits, investigations,  or proceedings at law or in equity by or before any
     court,  governmental  instrumentality,  commission,  or  other  agency  now

                                       14



     pending or  threatened  or against or  affecting  Purchaser  (or any of its
     subsidiaries  or related  entities)  or any of  Purchaser's  properties  or
     rights,  before any court,  arbitrator,  or  administrative or governmental
     body which may result in an adverse change in  Purchaser's  business or its
     condition,  financial or  otherwise.  Further,  Purchaser is not in default
     with respect to any order, writ, injunction,  or decree of any court or any
     governmental agency or department.

          15.4 Except for the requirement  that the issuance of Purchaser Shares
     and the  Adjustment  Shares be  approved  by  Purchaser's  stockholders  as
     contemplated  by Section 8.9 of this  Agreement,  Purchaser has full power,
     authority and legal right to execute and deliver and to perform and observe
     the  provisions  hereof  and  of  the  transactions   contemplated  hereby.
     Purchaser is not in default in the performance of any obligation,  covenant
     or condition in any agreement, decree, or order to which Purchaser is party
     or by which  Purchaser is bound or to which any of Purchaser's  property is
     subject.  Purchaser is not a party to a contract or agreement or subject to
     any  articles  of  incorporation  or  other  corporate   restriction  which
     adversely  affects  Purchaser's  business,  property,  assets or  financial
     condition. Purchaser is not a party to or otherwise subject to any contract
     or agreement  which  restricts or otherwise  affects  Purchaser's  right or
     ability  to  undertake  the   transactions   contemplated   hereby  or  the
     performance of any of its respective terms.

          15.5  The  Purchaser's  execution  of this  Agreement  has  been  duly
     authorized  and will not violate any  provision  of law or  certificate  of
     incorporation or corporate bylaws or any other agreement previously entered
     into.

          15.6 Neither this Agreement nor any other  document,  certificate,  or
     statement  furnished  to  Seller by  Purchaser  or any  director,  officer,
     employee, or affiliate of Purchaser, or to the best knowledge of Purchaser,
     by any  third  party,  in  connection  with the  transactions  contemplated
     hereby,  contains any untrue statement of material fact or omits to state a
     material fact  necessary in order to make the statements  contained  herein
     and therein not misleading.

          15.7 No consent, approval,  authorization,  permit or license from any
     federal,  state,  or local  regulatory  authority is required in connection
     with the transactions contemplated herein.

          15.8  To the  best  knowledge  of  Purchaser,  there  are no  existing
     violations of any  applicable  provision of (i) federal laws or regulations
     applicable to the business of Purchaser  such as, but not limited to, those
     relating to  government  contracting,  employment  practices,  occupational
     safety and health, environmental protection,  toxic substances,  securities
     regulation or otherwise,  or (ii) any  provision of any  comparable  state,
     local  or  foreign  laws or  regulations.  During  the  past  three  years,
     Purchaser  has not been charged with any violation of any law or regulation
     relating to its business practices, employment practices, safety or working
     conditions or other federal or state regulation.

          15.9 At the time the proxy statement is mailed to the  shareholders of
     Purchaser, at the time of the shareholders' meeting and on the Closing Date
     the proxy  statement  (i) will comply as to form in all  material  respects
     with the  provisions of the  Securities  Exchange Act of 1934 and the rules
     and  regulations  promulgated  thereunder,  and (ii) will not  contain  any
     untrue  statement  of a material  fact or omit to state any  material  fact
     required to be stated therein or necessary to make the statements  therein,
     in light of the  circumstances  under which they were made, not misleading;
     provided,  however, that Purchaser makes no representation or warranty with
     respect  to  information  contained  in the proxy  statement  furnished  in
     writing to  Purchaser  by Seller or  Seller's  partners  or a Designee  (as
     defined in Section 20.6).

                                       15




          15.10  Except  as  otherwise  provided  in  this  Agreement  or in the
     Corporate  Information,  from  the  date  of the  filing  with  the  SEC of
     Purchaser's latest periodic report pursuant to the Exchange Act through the
     execution date of this Agreement, there has been no material adverse change
     in the  condition of Purchaser or in the business,  results of  operations,
     assets,  net  worth,  prospects,  properties,  litigation  or the manner of
     conducting  the business of Purchaser  ("business and  operations"),  other
     than changes in the ordinary course of business and other than changes that
     might result from general business or economic conditions, such as internet
     rate levels, that are in the public domain. At all times from and after the
     execution  date of this Agreement and through the Closing and Closing Date,
     Seller  shall be kept  fully  advised  with  respect  to the  business  and
     operations of Purchaser.  Seller has and shall  continue to have access (in
     the manner and subject to the limitations herein provided) to the books and
     records of Purchaser and all material changes,  if any, in the business and
     operations of Purchaser have been and shall have been reviewed with Seller.

          15.11 Each  director  and officer of  Purchaser  shall  represent  and
     warrant  that  he is not  aware  of any  action  taken  individually  or by
     Purchaser  which  could  cause  any  of  Purchaser's   representations   or
     warranties herein to be untrue as of the date of the Closing or the Closing
     Date.

     The foregoing  representations  and  warranties are true and accurate as of
the date hereof, shall be true and accurate as of the Closing, and shall survive
the Closing. Purchaser further agrees to notify Seller immediately in writing if
any of the  representations  or warranties  herein are breached or are no longer
accurate at any time prior to and including the Closing.

     16. Opinion Of Counsel.  At the Closing,  the Purchaser  shall receive from
Seller an opinion,  addressed to the Purchaser,  of Wallack,  Somers & Haas, PC,
Indianapolis, Indiana, counsel to Seller, that as of the Closing:
    
          16.1  Seller  has  been  duly  formed  and   organized  as  a  limited
     partnership and is validly  existing and in good standing under the laws of
     the State of Delaware.  Seller is duly  qualified and licensed as a limited
     partnership  authorized  to do business in the State of Indiana and, to the
     best  of such  counsel's  knowledge,  the  State  of  Indiana  is the  only
     jurisdiction  in which the  failure  to  qualify  would  have a  materially
     adverse effect on the operations of Seller or the Property.

          16.2 Seller's execution of this Agreement has been duly authorized and
     will not violate any provision of the Certificate of Limited Partnership or
     Partnership Agreement of Seller.

          16.3 This  Agreement,  when executed and delivered by Seller,  will be
     valid and binding on Seller and  enforceable in accordance  with its terms,
     except that (i) the  enforcement of certain rights and remedies  created by
     this Agreement is subject to  bankruptcy,  insolvency,  reorganization  and
     similar laws of general  application  affecting  the rights and remedies of
     parties,  (ii)  the  enforceability  of any  particular  provision  of this
     Agreement  under  principles  of equity or the  availability  of  equitable
     remedies, such as specific performance,  injunctive relief, waiver or other
     equitable  remedies  is subject to the  discretion  of courts of  competent
     jurisdiction,  and  (iii) any court or  administrative  body may  refuse to
     enforce the indemnification provisions of this Agreement.

                                       16




     In  rendering  its  opinion,  counsel  may rely as to  factual  matters  on
certificates  of public  officials and officers or employees of Seller  provided
that copies of such  opinions  and  certificates  shall be  delivered  with such
opinion,  provided further that in the case of any such reliance,  counsel shall
state that it believes  that it is  justified  in relying on such  opinions  and
certificates for such matters.

     17. Opinion of Counsel. At the Closing, Seller shall receive from Purchaser
an opinion, addressed to Seller, of Patton Boggs LLP, counsel to Purchaser, that
as of the Closing:
 
          17.1 Purchaser has been duly formed and organized as a corporation and
     is validly  existing  and in good  standing  under the laws of the State of
     Delaware.

          17.2 The authorized capital stock of Purchasers consists of 10,000,000
     shares  of  Common  Stock,  of  which  1,658,770   shares  are  issued  and
     outstanding.  All of the Purchaser Shares and Adjustment Shares are validly
     authorized and, upon issuance to Seller and Seller's partners in accordance
     with the terms of this Agreement,  will be validly  issued,  fully paid and
     non-assessable.  To the best of such  counsel's  knowledge,  except for the
     Purchaser  Shares  and  Adjustment  Shares and as  disclosed  in the Annual
     Report on Form 10-KSB for the year ended  December  31,  1998,  there is no
     outstanding  capital stock, and there are no outstanding  rights,  options,
     calls, subscriptions,  warrants, agreements or commitments of any character
     relating to, or any outstanding  securities convertible into, the issued or
     unissued  capital stock of Purchaser.  No holder of  Purchaser's  shares is
     entitled to preemptive  rights.  To the best of such  counsel's  knowledge,
     other than the dividend of $.12 per share declared on March 10, 1999 with a
     record date of March 31, 1999 and a payment date of April 14,  1999,  since
     December  31,  1998,  Seller has not  declared or paid any  dividend on, or
     declared  or made any  distribution  of,  or  authorized  the  creation  or
     issuance of, or  authorized  or effected any split or any  recapitalization
     of, any of its capital stock, or directly or indirectly regained, purchased
     or  otherwise  acquired  any of its shares.  To the best of such  counsel's
     knowledge, there are no outstanding contractual obligations of Purchaser to
     repurchase,  redeem or otherwise acquire any shares of Purchaser's  capital
     stock.

          17.3 Seller's execution of this Agreement has been duly authorized and
     will not violate any  provision  of the  Certificate  of  Incorporation  or
     Bylaws of Purchaser.

          17.4 This Agreement, when executed and delivered by Purchaser, will be
     valid and binding on  Purchaser  and  enforceable  in  accordance  with its
     terms,  except  that (i) the  enforcement  of certain  rights and  remedies
     created  by  this   Agreement   is  subject  to   bankruptcy,   insolvency,
     reorganization and similar laws of general application effecting the rights
     and  remedies  of  parties,  (ii)  the  enforceability  of  any  particular
     provision of this Agreement under  principles of equity or the availability
     of equitable  remedies,  such as specific  performance,  injunctive relief,
     waiver or other  equitable  remedies is subject to the discretion of courts
     of competent  jurisdiction,  and (iii) any court or administrative body may
     refuse to enforce the indemnification provisions of this Agreement.

     In  rendering  its  opinion,  counsel  may rely as to  factual  matters  on
certificates  of public  officials and officers or employees of Seller  provided
that copies of such  opinions  and  certificates  shall be  delivered  with such

                                       17



opinion,  provided further that in the case of any such reliance,  counsel shall
state that it believes  that it is  justified  in relying on such  opinions  and
certificates for such matters.

     18. Default.  If Seller fails to comply with this Agreement for any reason,
Purchaser may either enforce specific  performance,  terminate this Agreement or
seek such other relief as may be provided by law. If  Purchaser  fails to comply
with this Agreement for any reason,  Seller may terminate this Agreement or seek
such other  relief as may be  provided  by law.  In any  action to enforce  this
Agreement or for other relief  provided by law,  the  prevailing  Party shall be
entitled to such  attorneys'  fees and  expenses as may be allowed by the court,
arbitrator or other judicial body.

     19.  Commission.  Seller agrees and represents  that no sales fees or sales
commissions  will be due or  payable  to anyone by Seller  with  respect  to the
transaction contemplated by this Agreement. Purchaser agrees and represents that
no sales fees or sales commissions will be due or payable to anyone by Purchaser
with respect to the transaction contemplated by this Agreement.
               
     20.  Indemnity  Agreements.  Purchaser  hereby agrees to indemnify and hold
harmless Seller and Seller's officers,  directors,  employees and agents against
any loss, injury,  damage,  claim, lien, cost or expense,  including  reasonable
attorneys' fees,  arising because of a breach by Purchaser of any lease,  breach
by Purchaser of any  contract,  breach by Purchaser of this  Agreement or of any
representations or warranties included in this Agreement,  a claim by any broker
that it  represented  Purchaser  or is  otherwise  entitled to  compensation  in
connection  with this  Agreement or with the sale of the Property,  or any other
matter  related to the Property  which occurs after the Closing.  Seller  hereby
agrees to indemnify  and hold harmless  Purchaser  and its officers,  directors,
employees and agents against any loss,  damage,  claim,  lien,  cost or expense,
including  reasonable  attorneys' fees, arising out of a breach by Seller of any
lease,  breach by Seller of any contract,  breach by Seller of this Agreement or
of any representations or warranties included in this Agreement or the breach by
Seller of any  agreement,  representation  or warranty  included in any document
delivered by or on behalf of Seller in connection with this  Agreement,  a claim
by  any  broker  that  it  represented   Seller  or  is  otherwise  entitled  to
compensation in connection with this Agreement or with the sale of the Property,
or any other matter related to the Property which occurs prior to the Closing.

     21. Additional Agreements.

          21.1 Registration Rights.

               21.1.1  AmeriVest  will,  no later than 45 days after the Closing
          Date, file with the SEC a registration  statement on Form S-3 or other
          appropriate  Form under the  Securities  Act of 1933,  as amended (the
          "1933 Act") including such amendments as may be necessary, registering
          the  transfer of  Purchaser  Shares and any  Adjustment  Shares by the
          partners  of Seller and the  shareholders  of the  general  partner of
          Seller  or by Seller  (the  "Selling  Stockholders")  to  parties  not
          related to Seller.  Purchaser shall use reasonable  diligence to cause
          the registration statement to become effective and to remain effective
          for a period  ending two years after the Closing  Date or such earlier
          period as all Purchaser  Shares and Adjustment  Shares shall have been
          sold to third parties by the partners of Seller.

               21.1.2 As to the registration statement,  Purchaser's obligations
          contained  in this  Section  21.1  shall be  conditioned  upon  timely
          receipt by Purchaser in writing of  information as to the terms of the
          contemplated  transfer to be registered  furnished by and on behalf of
          the Selling  Stockholders  and such other  information as Purchaser or

                                       18



          the managing  underwriter,  if any,  reasonably  may require from such
          person  or any  underwriter  for any  shares of the  Common  Stock for
          inclusion in the registration  statement.  Such  information  shall be
          provided to Purchaser in writing  within 10 days after the request for
          that information by Purchaser.

               21.1.3  All  registration   expenses  incurred  by  Purchaser  in
          connection with the registration, qualification or compliance pursuant
          to this Section 21.1, including reasonable printing expenses, fees and
          disbursements of Purchaser's counsel, and registration and filing fees
          relating  to  shares  of Common  Stock to be  registered  on behalf of
          Purchaser  or  Selling  Stockholders   pursuant  to  the  registration
          statement  required to be filed by  Purchaser on behalf of the Selling
          Stockholders  pursuant  to  this  Section  21.1,  shall  be  borne  by
          Purchaser. All selling expenses, including commissions and brokers' or
          investment  bankers' expense allowances  allocable to Purchaser Shares
          and  Adjustment  Shares  and the  costs of  counsel,  if any,  for the
          Selling Stockholders  pursuant to the registration,  shall be borne by
          the Selling Stockholders.

               21.1.4  In  the  case  of  the  registration,   qualification  or
          compliance effected by Purchaser on behalf of the Selling Stockholders
          pursuant  to this  Section  21.1,  Purchaser  shall  keep the  Selling
          Stockholders   advised  in  writing  as  to  the  initiation  of  such
          registration,  qualification,  and compliance and as to the completion
          thereof.  At its  expense,  Purchaser  will  keep  such  registration,
          qualification  or  compliance  effective for a period ending two years
          after  the  Closing  Date  or  until  the  Selling  Stockholders  have
          completed the  distribution  described in the  registration  statement
          relating thereto,  whichever first occurs.  At its expense,  Purchaser
          shall furnish such number of prospectuses and other documents incident
          thereto as the Selling  Stockholders  from time to time may reasonably
          request.

               21.1.5 In  connection  with the  registration,  qualification  or
          compliance effected by Purchaser on behalf of the Selling Stockholders
          pursuant to this Section 21.1, Purchaser shall use its best efforts to
          register  and  qualify  the  securities  covered by such  registration
          statement  under  such  other  securities  or  blue  sky  laws of such
          jurisdictions  as Seller or the Selling  Stockholders  may  reasonably
          request that allow  registration by coordination and to do any and all
          other acts and things  which may be  necessary  or advisable to enable
          the Selling  Stockholders  to  complete  such  proposed  sale or other
          distribution  of Purchaser  Shares and  Adjustment  Shares in any such
          jurisdiction;  provided  however,  that in no event shall Purchaser be
          obligated  to  register  or  qualify  under  the  blue sky laws of any
          jurisdiction  which would require  Purchaser to qualify to do business
          or to file a general consent to service of process in any jurisdiction
          where it shall not then be qualified.

               21.1.6 In  connection  with any  registration,  qualification  or
          compliance  pursuant to this Section 21.1,  Purchaser and Seller agree
          to the following indemnification terms:

                    (a) Without  limitation of any other  indemnity  provided to
               Seller, to the extent permitted by law, Purchaser shall indemnify
               and hold harmless Seller and each Selling  Stockholder,  Seller's
               affiliates,  employees, partners and counsel, any underwriter (as
               defined  in the U.S.  Securities  Act of 1933,  as  amended  (the
               "Securities Act")) for the Selling Stockholders, and each person,
               if any, who controls the  underwriter  (within the meaning of the
               Securities Act or the U.S.  Securities  Exchange Act of 1934 (the
               "Exchange  Act")),   against  any  losses,   claims,  damages  or

                                       19



               liabilities  (joint or several) to which they may become  subject
               under the  Securities  Act, the Exchange Act or other  federal or
               state law, insofar as such losses, claims, damages or liabilities
               (or  actions in respect  thereof)  arise out of or are based upon
               any  of  the  following   statements,   omissions  or  violations
               (collectively a "Violation"): (i) any untrue statement or alleged
               untrue   statement   of  a  material   fact   contained  in  such
               registration  statement  including any preliminary  prospectus or
               final   prospectus   contained   therein  or  any  amendments  or
               supplements  thereto,  (ii) the  omission or alleged  omission to
               state therein a material fact required to be stated  therein,  or
               necessary  to  make  the  statements  therein  in  light  of  the
               circumstances  in which they were made not misleading,  (iii) any
               violation or alleged  violation  by  Purchaser of the  Securities
               Act, the Exchange Act, or any state securities law or any rule or
               regulation promulgated under the Securities Act, the Exchange Act
               or any state securities law, and Purchaser shall reimburse Seller
               and  each  Selling  Stockholder  and  each  affiliate,  employee,
               partner, counsel of Seller, underwriter or controlling person for
               any legal or other expenses  incurred by them in connection  with
               investigating  or  defending  any  such  loss,   claim,   damage,
               liability or action; provided,  however, that Purchaser shall not
               be liable  hereunder  in any such case for any such loss,  claim,
               damage,  liability or action to the extent that it arises out of,
               or is based upon, a violation  which occurs in reliance  upon and
               in conformity  with  information  furnished  expressly for use in
               connection  with  such  registration  by  Seller  or any  Selling
               Stockholder or any other affiliate, employee, partner, counsel or
               controlling person thereof. Individual Selling Stockholders shall
               be liable  solely for  information  provided  by them and not for
               information provided by other Selling Stockholders.

                    (b) Insofar as such losses,  claims,  damages or liabilities
               (or  actions in respect  thereof)  arise out of or are based upon
               any untrue  statements of a material  fact  contained in any such
               registration  statement  based upon (i)  information  provided by
               such person to Purchaser  specifically  for inclusion  therein in
               connection  with  the  offer  or sale  of  Purchaser  Shares  and
               Adjustment  Shares, or (ii) any violation or alleged violation by
               such  person  of  any  federal  or  state  securities  law or any
               regulation promulgated under any federal or state securities law,
               each  Selling  Stockholder  shall,  if  securities  held  by such
               Selling  Stockholder  pursuant to the registration  statement are
               included in such  registration,  to the extent  permitted by law,
               indemnify  and  hold  harmless  Purchaser,  its  affiliates,  its
               counsel, officers, directors,  shareholders,  any underwriter (as
               defined  in the  Securities  Act) and each  person,  if any,  who
               controls Purchaser or the underwriter  (within the meaning of the
               Securities   Act)   against  any  losses,   claims,   damages  or
               liabilities to which they may become subject under the Securities
               Act,  the  Exchange  Act or any state  securities  law,  and each
               Selling  Stockholder  shall  reimburse each of Purchaser and such
               affiliate,   officer  or  director  or  partner,  underwriter  or
               controlling  person  for any legal or other  expenses  reasonably
               incurred by them in connection  with  investigating  or defending
               any such loss, claim, damage, liability or action.

                    (c) Promptly  after  receipt by an  indemnified  party under
               this Section 21.1.6 of notice of the  commencement  of any action
               (including  any  governmental  action),  such  indemnified  party
               shall,  if a claim in respect  thereof is to be made  against any

                                       20



               indemnifying  party  under this  Section  21.1.6,  deliver to the
               indemnifying  party a written notice of the commencement  thereof
               and the indemnifying party shall have the right to participate in
               the defense  thereof,  and if the  indemnifying  party  agrees in
               writing  that it will be  responsible  for any  costs,  expenses,
               judgments,  damages and losses incurred by the indemnified  party
               with respect to such claim,  jointly with any other  indemnifying
               party  similarly  noticed,  to assume the  defense  thereof  with
               counsel mutually satisfactory to the parties; provided,  however,
               that an indemnified  party shall have the right to retain its own
               counsel,  with the reasonable fees and expenses to be paid by the
               indemnifying  party, if the indemnified party reasonably believes
               that  representation  of such  indemnified  party by the  counsel
               retained by the indemnifying  party would be inappropriate due to
               actual or potential  differing interests between such indemnified
               party and any other  party  represented  by such  counsel in such
               proceeding.   The  failure  to  deliver  written  notice  to  the
               indemnifying  party within a reasonable time of the  commencement
               of any such action shall relieve such  indemnifying  party of any
               liability to the  indemnified  party under this Agreement only if
               and to the extent that such failure is materially  prejudicial to
               its ability to defend such action, and the omission so to deliver
               written notice to the  indemnifying  party will not relieve it of
               any liability that it may have to any indemnified party otherwise
               than under this Agreement.

                    (d) If the indemnification provided for in this Agreement is
               held by a court of competent jurisdiction to be unavailable to an
               indemnified  party with  respect to any loss,  liability,  claim,
               damage or expense  referred  to  therein,  then the  indemnifying
               party, in lieu of indemnifying such indemnified party thereunder,
               shall   contribute   to  the  amount  paid  or  payable  by  such
               indemnified  party as a result of such  loss,  liability,  claim,
               damage or expense in such proportion as is appropriate to reflect
               the relevant fault of the indemnifying  party on the one hand and
               the  indemnified  party on the other hand in connection  with the
               statements or omissions  which resulted in such loss,  liability,
               claim, damage or expenses as well as any other relevant equitable
               considerations.  The relevant fault of the indemnifying party and
               the indemnified  party shall be determined by reference to, among
               other things, whether the untrue or alleged untrue statement of a
               material fact or the omission to state a material fact relates to
               information   supplied  by  the  indemnifying  party  or  by  the
               indemnified  party and the parties'  relative intent,  knowledge,
               access to information  and opportunity to correct or prevent such
               statement or omission.

                    (e) The indemnification  provided by this Agreement shall be
               a  continuing  right to  indemnification  and shall  survive  the
               registration and sale of Purchaser  Shares and Adjustment  Shares
               by any  person  entitled  to  indemnification  hereunder  and the
               expiration or termination of this Agreement.

               21.1.7   With  a  view  to  making   available   to  the  Selling
          Stockholders the benefits of Rule 144 and any other rule or regulation
          of the SEC that may at any time permit a Selling  Stockholder  to sell
          securities of Purchaser to the public without registration,  Purchaser
          agrees  to  use  its  best  efforts  to:  (i)  make  and  keep  public
          information  available,  as those terms are  understood and defined in

                                       21



          Rule 144, at all time  subsequent to the Closing Date;  (ii) file with
          the SEC in a timely manner all reports and other documents required of
          Purchaser under the Securities Act and the Exchange Act; (iii) furnish
          to any  Selling  Stockholder  so  long  as  such  person  owns  any of
          Purchaser Shares or Adjustment Shares forthwith upon request a copy of
          the most recent  annual or  quarterly  report of  Purchaser,  and such
          other reports and documents so filed by Purchaser as may be reasonably
          requested in availing the holder of any rule or  regulation of the SEC
          permitting the selling of any such securities without registration.

          21.2  Property  Management,   Continuing   Operations  and  Approvals.
     Sheridan Development,  LLC shall serve as property manager for the Property
     for a  management  fee equal to five  percent  of the gross  rents from the
     Property pursuant to the terms of the Management  Agreement attached to and
     made a part of this Agreement as Exhibit F. Until the Closing, Seller shall
     (i)  continue  its normal  maintenance  and repairs of the  Property;  (ii)
     continue to operate and manage the  Property  in a manner  consistent  with
     Seller's past and usual practice;  (iii) without the approval of Purchaser,
     not make or enter into any new leases or  modifications  thereof or any new
     contracts  for  the  maintenance,  service,  management  or  repair  of the
     Property  which  are not  terminable  with 30  days or less  prior  written
     notice;  (iv) use  reasonable  and  customary  efforts to collect all rents
     which are due and payable as of the Closing; and (v) use reasonable efforts
     to comply  with  Seller's  obligations  under  the  leases  and  contracts.
     Notwithstanding  the foregoing,  unless otherwise  required by the terms of
     the  leases,  Seller  shall not be required to  undertake  any  substantial
     repairs,  renovations or capital improvements to the Property, except those
     repairs,  renovations or capital requirements required by law in which case
     Seller may terminate  this  Agreement by giving written notice to Purchaser
     setting forth in reasonable  detail the reasons for the  termination if the
     cost of those repairs,  renovations or capital  improvements exceed $25,000
     in  the  aggregate.  Any  contract  or  agreement,   including  leases  and
     modifications  thereof,  requiring  Purchaser's  approval  shall be sent to
     Purchaser  with a written  request  for  approval  together  with any other
     information relating to the requested approval.  Purchaser shall respond to
     Seller's  request for approval  within  three (3)  business  days after the
     delivery of the request. Unless Purchaser delivers written notice to Seller
     approving the proposed agreement within three (3) business days,  Purchaser
     shall be deemed to have disapproved such agreement and Seller may not enter
     into such lease,  contract or agreement in the form previously delivered to
     Purchaser.


          21.3 Right Of First Refusal Concerning ROFR Parcel. After the Closing,
     Purchaser shall have a first right to purchase and a right of first refusal
     to purchase the ROFR Parcel as follows:  if Seller desires to sell the ROFR
     Parcel,  Seller shall first present  Purchaser with a written offer setting
     forth the material  terms  pursuant to which it is willing to sell the ROFR
     Parcel. Within 30 days after receipt of this offer,  Purchaser shall notify
     Seller if it wishes to accept this offer. If Purchaser does not accept this
     offer,  then Seller may proceed to offer the  property to others,  provided
     that if Seller  receives a bona fide written  offer,  including a letter of
     intent  ("Offer") signed by a third party that desires to purchase the ROFR
     Parcel,  then Seller shall  deliver a copy of the Offer to  Purchaser,  and
     Purchaser shall have 10 days thereafter to deliver written notice to Seller
     that  Purchaser  desires to purchase  the ROFR Parcel on the same terms and
     conditions as those set forth in the Offer. If Purchaser  delivers  written
     notice  within this time period,  then Seller shall sell the ROFR Parcel to
     Purchaser  on the terms set forth in the  Offer  together  with such  other
     terms and conditions that would be considered  standard in a transaction of
     this nature. If Purchaser does not deliver written notice within the stated
     time  period,  then Seller may proceed to sell the ROFR Parcel on the terms
     and  conditions set forth in the Offer,  together with the same  "standard"
     other terms and conditions that Seller requested of Purchaser, to the party

                                       22



     that submitted the Offer. If Seller does not consummate the purchase of the
     ROFR Parcel on those terms and  conditions  set forth  within 90 days after
     the first to occur of 90 days after the date  scheduled  for closing in the
     Offer or six months after  expiration of Purchaser's time period for giving
     notice of exercise of its right of first refusal,  then Seller may not sell
     the ROFR Parcel  without  recommencing  the  procedures  set forth  herein.
     Notwithstanding  the foregoing,  if Purchaser  exercises its right of first
     refusal or accepts  Seller's  offer to sell  pursuant  to the terms of this
     paragraph,  and Purchaser  fails to consummate the  acquisition  because of
     Purchaser's  financial  or other  inability  to close  the  acquisition  or
     because of Purchaser's  lack of good faith, or Purchaser  otherwise  elects
     not to close,  provided  that any such failure or inability of Purchaser to
     close,  or election of Purchaser  not to close,  is not because of Seller's
     lack of good faith or other inability to consummate the transaction, and it
     is not  because of newly  discovered  adverse  information  concerning  the
     Property,  then  Purchaser's  first  right of  purchase  and right of first
     refusal shall terminate.

     21.4 Confidential Information; Inside Information; Publicity

               21.4.1 Information  Confidential And Not For Competitive Or Other
          Use. Each Party  acknowledges  that the  information  provided to that
          Party   concerning   the  other  Party   pursuant  to  this  Agreement
          (collectively,  the "Information") may include proprietary information
          and  data,  interpretations,   innovative  processes,  trade  secrets,
          marketing  plans,  and  confidential or specialized  data and/or other
          information  relative to the  business  and  proposed  business of the
          other Party. " Information" shall not include any information which is
          publicly  available.  Each Party (the  "Receiving  Party")  agrees and
          covenants with and unto the other Party (the "Disclosing  Party") that
          the Receiving  Party will use the  Information  solely to evaluate the
          Receiving  Party's  consummation of the  transactions  contemplated by
          this Agreement. Without limiting the foregoing, except as specifically
          authorized  in writing by the  Disclosing  Party or as required by law
          (including court order) or applicable federal securities  regulations,
          in which latter event the Receiving Party will immediately  notify the
          Disclosing  Party  of  the  requirement  and  reasonably   assist  the
          Disclosing  Party in contesting  that  requirement if requested by the
          Disclosing Party, the Receiving Party will not use any Information for
          the  Receiving  Party's or any other  person's  or  entity's  benefit,
          including  in any  manner  or for any  purpose  competitive  with  the
          business of the Disclosing Party, and the Receiving Party will not, at
          any time,  disclose any of the Information to any other person,  firm,
          corporation  or  other  entity  without  the  written  consent  of the
          Disclosing  Party,  except  for  reasonable  disclosure  made  by  the
          Receiving  Party  to its  employees,  consultants,  limited  partners,
          accountants or banks and only after such recipient  agrees to be bound
          by the terms of this Section 21.4.

               21.4.2  Inside  Information.  Certain  of  the  Information  that
          Purchaser   may   furnish   to  Seller   and   certain   of   Seller's
          representatives may be material  information  concerning Purchaser and
          its operations  that has not been included in publicly filed documents
          or otherwise been publicly  disclosed (the "Non-Public  Information").
          Unless the  information  provided  to Seller  consists  of or has been
          specifically included in a periodic report filed with the SEC, a press
          release,  marketing  materials,  or otherwise  has been made  publicly
          available   otherwise  than  by  Seller,  that  information  shall  be
          considered Non-Public Information. Seller agrees, and shall cause each
          of Seller's  representatives who receives such Non-Public Information,
          to maintain the confidentiality of the Non-Public Information.  Seller
          acknowledges  that the Purchaser is a  corporation  that is subject to
          the reporting  requirements of the Exchange Act and whose common stock
          is traded publicly.  In this regard, Seller recognizes that applicable
          U.S.   federal   securities  laws  impose   significant   restrictions
          concerning  the use or disclosure  of the  Non-Public  Information  in
          general  and in buying or  selling,  or  discussing  with  others  the

                                       23



          possibility  of buying or selling,  Purchaser's  securities by persons
          who have access to Non-Public Information concerning Purchaser that is
          not  generally  available  to members of the  general  public.  Seller
          acknowledges  that  the  Non-Public   Information  may  be  considered
          material non-public  information that constitutes "inside information"
          under the U.S. federal securities laws. By virtue of its access to the
          Non-Public Information, Seller and its representatives will be subject
          to these  restrictions.  Seller  agrees that it will not,  and that it
          will use its best efforts to ensure that any person  having  access to
          such Non-Public  Information  through it, including without limitation
          partners of Seller,  will not buy or sell Purchaser's  securities,  or
          discuss with others any Non-Public Information concerning Purchaser or
          the  possibility  or  advisability  of buying or  selling  Purchaser's
          securities,  at  any  time  that  the  respective  Investor  possesses
          Non-Public Information concerning Purchaser. Seller agrees to disclose
          any Non-Public  Information  obtained by it only to representatives of
          Seller and only if each recipient of the Non-Public  Information first
          agrees  that he or she will abide by the  provisions  of this  Section
          21.4.  Seller  and  Purchaser  hereby  confirm  that  any  information
          disclosed  to  Seller,  or any  discussions  held  between  Seller and
          Purchaser, prior to the date of this Agreement shall be subject to the
          terms of this Section 21.4.

               21.4.3   Responsibility  For  Recipients  Of  Information.   Each
          Receiving  Party  shall be  responsible  and liable to the  Disclosing
          Party for the  failure  of the  Receiving  Party or any  other  person
          receiving the Information  from the Receiving Party to comply with any
          of the provisions of this Section 21.4.
                
               21.4.4  Publicity.  All  notices to third  parties  and all other
          publicity  concerning the transactions  contemplated by this Agreement
          shall  be  directed  by  Purchaser  after  consultation  with  Seller.
          Notwithstanding anything to the contrary in this Section, any Party to
          this Agreement  shall be permitted  unilaterally  to make such notices
          and to engage in such  publicity as it reasonably  deems  necessary to
          comply with applicable laws and regulations,  including its respective
          reporting  obligations,  if any, under the 1934 Act. The provisions of
          this Section shall remain in effect only until the earlier to occur of
          the Closing or the termination of this Agreement.

          21.5 Cooperation  Concerning Financial Statements And Taxes. After the
     Closing Date, each of the Parties shall cooperate, and cause its respective
     directors,  employees,  officers and representatives to cooperate, with the
     others and with each other's respective agents,  including accounting firms
     and legal  counsel,  in  connection  with the  preparation  or audit of any
     financial  statements,  tax  return or  report,  amended  return or report,
     periodic report or proxy or information statement required to be filed with
     the SEC,  claim for refund in any tax claim or litigation in respect of any
     of the  parties,  or the  Property or their  respective  activities,  which
     cooperation  shall include,  but not be limited to, making available to the
     other all information,  records, and documents in their possession relating
     to the Property,  except as may be limited by this  Agreement.  Each of the
     Parties also shall make  available to the others,  as reasonably  requested
     and available,  the personnel  responsible  for preparing,  maintaining and
     interpreting   information,   records  and  documents  in  connection  with
     financial statements and taxes of Seller or related to the Property as well
     as related  litigation.  Any information  provided or obtained  pursuant to
     Section  21.5  shall  be  kept  confidential,  except  as may be  otherwise
     necessary in connection with the filing of periodic  reports required under
     the Exchange Act, other disclosure requirements of Purchaser, or of returns
     or reports, refund claims, audits, tax claims and litigation.

          21.6  Appointment  Of  Directors.   Immediately   after  the  Closing,
     Purchaser shall cause two designees (the "Designees") of Seller,  who shall
     be reasonably acceptable to Purchaser, to be elected directors of Purchaser
     in such  classes as are  available  for new  directors in  accordance  with
     Purchaser's  Bylaws. If, pursuant to Purchaser's  Bylaws, the Designees are
     to serve in separate  classes,  Seller may designate  which  Designee shall

                                       24



     serve in which class.  If not previously  elected to  Purchaser's  Board of
     Directors,  the initial  Designees  shall be entitled to attend meetings of
     Purchaser's  Board of Directors  commencing  on the date this  Agreement is
     signed by both Parties and continuing until this Agreement is terminated.

          21.7  Additional  Documents;  Further  Assurances.  In addition to the
     schedules and other items specifically  required to be furnished hereunder,
     the Parties hereby agree that each will promptly  furnish to the other such
     further  schedules,  certificates and other instruments and take such other
     action as may  reasonably be requested in order to effectuate  the purposes
     of this Agreement.
             
          21.8 Distribution Of Shares; Lock-Up.  Purchaser Shares and Adjustment
     Shares to be issued as  consideration  for the purchase  hereunder shall be
     distributed  to  the  partners  of  Seller  upon  receipt,  subject  to the
     requirements  of all applicable  federal and state  securities  laws.  This
     distribution  will be  structured  to result in compliance by Seller and by
     all partners of Seller with Article V, Section 9 of Purchaser's  Bylaws, as
     amended, with respect to the number of shares of Purchaser's stock that are
     deemed to be owned by any person or entity. Prior to transferring Purchaser
     Shares  and  Adjustment  Shares  on  Purchaser's  stock  transfer  records,
     Purchaser may require  evidence of compliance with  applicable  federal and
     state  securities  laws  and  Purchaser's  Bylaws,   including  appropriate
     representation  or  subscription  agreements  signed by each  transferee of
     Purchaser Shares and Adjustment Shares, which subscription agreements shall
     be  substantially  in the form of D to and  made a part of this  Agreement.
     Notwithstanding the foregoing, neither Seller nor any partner of Seller may
     sell,  offer  for  sale,  transfer,  pledge or  hypothecate  in any  manner
     Purchaser Shares prior to the first anniversary of the Closing Date without
     Purchaser's written consent,  which consent may be withheld by Purchaser in
     Purchaser's sole discretion.

     22.  Notices.  All  notices,  requests,   demands,   directions  and  other
communications  ("Notices")  concerning  this Agreement  shall be in writing and
shall be mailed or delivered  personally  or sent by  telecopier or facsimile to
the  applicable  Party at the  address  of such  Party set  forth  below in this
Section 22. When mailed,  each such Notice shall be sent by first class by first
class,  certified mail, return receipt requested,  enclosed in a postage prepaid
wrapper,  and shall be  effective  on the fifth  business  day after it has been
deposited  in the mail.  When  delivered  personally,  each such Notice shall be
effective when  delivered to the address for the  respective  Party set forth in
this  Section 22,  provided  that it is  delivered on a business day and further
provided  that it is  delivered  prior to 5:00 p.m.,  local time of the Party to
whom the notice is being delivered,  on that business day; otherwise,  each such
Notice shall be effective on the first  business day occurring  after the Notice
is delivered.  When sent by  telecopier or facsimile,  each such Notice shall be
effective on the day on which it is sent  provided that it is sent on a business
day and further  provided that it is sent prior to 5:00 p.m.,  local time of the
Party to whom the Notice is being sent, on that business  day;  otherwise,  each
such Notice  shall be effective on the first  business day  occurring  after the
Notice is sent.  Each such Notice shall be addressed to the Party to be notified
as shown below:

                  To Purchaser:
                           AmeriVest Properties Inc.
                           c/o James F. Etter
                           2801 Youngfield
                           Suite 300
                           Golden Colorado 80401
                           Facsimile: (303) 235-0124

                                       25




                  To Seller:
                           Sheridan Realty Partners, L.P.
                           c/o Sheridan Realty Corp., General Partner
                           1800 Glenarm Place, Suite 500
                           Denver, Colorado 80202
                           Facsimile: (303) 296-7353
                           Attn:  Charles K. Knight

     Either Party may change its respective address for purposes of this Section
22 by giving the other  Party  Notice of the new address in the manner set forth
above.

     23. Entire Agreement.  This Agreement,  together with the exhibits attached
hereto,  all of which are  incorporated  by reference,  is the entire  agreement
between  the  parties  with  respect  to  the  subject  matter  hereof,  and  no
alteration,  modification  or  interpretation  hereof shall be binding unless in
writing and signed by both parties.
     
     24. Severability.  If any provision of this Agreement or application to any
party  or   circumstances   shall  be  determined  by  any  court  of  competent
jurisdiction  to be invalid and  unenforceable  to any extent,  the remainder of
this  Agreement  or  the  application  of  such  provision  to  such  person  or
circumstances,  other  than  those as to which it is so  determined  invalid  or
unenforceable, shall not be affected thereby, and each provision hereof shall be
valid and shall be enforced to the fullest extent permitted by law.

     25. Captions.  The captions in this Agreement are inserted only as a matter
of  convenience  and for reference  and in no way define,  limit or describe the
scope of this Agreement or the scope or content of any of its provisions.
       
     26. Time Of Essence. Time is of the essence in this Agreement.

     27. Counterparts;  Facsimile Signatures. This Agreement may be executed and
delivered in any number of counterparts, each of which so executed and delivered
shall be deemed to be an original and all of which shall  constitute one and the
same  instrument.   Facsimile   signatures  shall  be  as  binding  as  original
signatures.
   
     28. Recordation. Seller and Purchaser agree not to record this Agreement or
any memorandum hereof.

     29. Parties In Interest;  Survival;  Assignment.  This  Agreement  shall be
binding upon and inure to the benefit of and be  enforceable  by the  respective
successors and assigns of Seller and Purchaser. All representations,  covenants,
and  agreements  in this  Agreement  or any  statement,  certificate,  or  other
document  delivered in connection  with this Agreement or pursuant  hereto shall
survive the Closing except as specifically  limited  herein.  This Agreement may
not be assigned by either Party without the prior  written  consent of the other
Party hereto,  except that Purchaser may assign this Agreement to a wholly-owned
subsidiary  of the  Purchaser  in which  event  Purchaser  shall  continue to be
obligated  to issue the  Purchaser  Shares  and  Adjustment  Shares,  if any are
required to be issued, and to register the Registrable  Securities in accordance
with the terms of this Agreement.

                                       26










     IN WITNESS  WHEREOF,  the Parties have caused this Agreement to be executed
by their duly  authorized  officers  or  representatives  on the dates set forth
below  to be  effective  as of the  date set  forth  on the  first  page of this
Agreement.

SHERIDAN REALTY PARTNERS, L.P                    AMERIVEST PROPERTIES INC.
  a Delaware limited partnership                 a Delaware corporation
By:  Sheridan Realty Corp., General Partner


By: /s/  William T. Atkins                           By:  /s/  James F. Etter
    --------------------------------                ----------------------------
    Signature                                        James F. Etter
                                                     President
    William T. Atkins, President
- ------------------------------------
     Printed Name and Title
                               

                                       27




                           PURCHASE AND SALE AGREEMENT
                              Dated April 26, 1999
                   Between Sheridan Realty Partners, L.P. and
                            AmeriVest Properties Inc.

                                  EXHIBIT INDEX

Exhibit                  Description
- -------                  -----------

A                   Legal Description
B                   Leases and Tenancies
C                   Insurance Policies
D                   Form of Estoppel Letter
E                   Subscription and Registration Rights Agreement
F                   Management Agreement



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