EXHIBIT 10.1
                                 EXECUTION COPY

                         CONTRIBUTION AND SALE AGREEMENT

     THIS CONTRIBUTION AND SALE AGREEMENT ("Agreement") is made and entered into
as of the 29 day of May,  2003 among  GEORGE  KRUPP,  an  individual,  having an
address at c/o The Berkshire  Group,  One Beacon Street,  Boston,  Massachusetts
02108 (the "GK Transferor"),  DOUGLAS KRUPP, an individual, having an address at
c/o The Berkshire Group, One Beacon Street, Boston, Massachusetts 02108 (the "DK
Transferor" and together with the GK Transferor,  the "LP  Transferors"),  KRUPP
GP, INC., a  Massachusetts  corporation  having an address at c/o The  Berkshire
Group, One Beacon Street,  Boston,  Massachusetts 02108 (the "GP Transferor" and
together  with  the  LP  Transferors,   the  "Transferors"),   BERKSHIRE  INCOME
REALTY-OP,  L.P., a Delaware  limited  partnership  having an address at c/o The
Berkshire  Group,   One  Beacon  Street,   Boston,   Massachusetts   02108  (the
"Partnership")  and BIR-OP  MCNAB SUB,  L.L.C.,  a  Delaware  limited  liability
company having an address at c/o The Berkshire Group, One Beacon Street, Boston,
Massachusetts  02108 (the  "Partnership  Sub" and together with the Partnership,
the  "Transferees").  Capitalized  terms used herein but not  otherwise  defined
shall have the meanings given to them in Section 1.1.

                              W I T N E S S E T H:

     WHEREAS, (i) the GK Transferor owns a 49.5% limited partnership interest in
McNab  -  K  C  3  Limited  Partnership,  a  Massachusetts  limited  partnership
("McNab"),  (ii) the DK Transferor owns a 49.5% limited partnership  interest in
McNab (the  interest of the GK  Transferor  together with the interest of the DK
Transferor in McNab,  the "LP  Interests") and (iii) the GP Transferor owns a 1%
general  partnership  interest in McNab (the "GP Interest" and together with the
LP Interests, the "Partnership Interests").

     WHEREAS,   McNab  owns  certain  real  property  known  as  Windward  Lakes
Apartments and located at 4001 S.W. 15th Street, Pompano,  Florida 33069 as more
particularly described in Exhibit A annexed hereto and hereby made a part hereof
(such  real  property,  together  with the  associated  personal  property,  the
"Property");

     WHEREAS,  (i) the LP  Transferors  desire to contribute the LP Interests to
the  Partnership in exchange for Partnership  Units,  and (ii) the GP Transferor
desires to  transfer  the GP  Interest to the  Partnership  Sub in exchange  for
Partnership Units, all on the terms and conditions hereinafter set forth in this
Agreement.

     NOW,  THEREFORE,  in  consideration  of the mutual covenants and agreements
herein  contained  and  other  good and  valuable  consideration,  the  receipt,
adequacy and sufficiency of which are hereby  acknowledged,  the parties hereto,
intending legally to be bound, hereby agree as follows:


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                                    ARTICLE I

                                   Definitions

     1.1  Definitions.  Except as otherwise herein  expressly  provided,  and in
addition to any other  definitions  herein  contained,  the following  terms and
phrases shall have the meanings set forth below:

     "Additional  Loan" shall mean that  certain  loan as  evidenced by (i) that
certain  Additional  Loan  Agreement  (the  "Additional  Loan   Agreement")dated
December 28, 1990 by the Transferors,  as borrowers, and Krupp Government Income
Trust  ("GIT"),   as  lender,  (ii)  that  certain  Additional  Loan  Note  (the
"Additional Loan Note") in the original principal amount of $2,471,294.00  dated
December 28, 1990 made by the  Transferors  in favor of GIT,  (iii) that certain
Pledge and  Security  Agreement  dated  December  28, 1990 by and between the DK
Transferor,  as debtor,  and GIT, as secured party, (iv) that certain Pledge and
Security Agreement dated December 28, 1990 by and between the GK Transferor,  as
debtor,  and GIT,  as  secured  party,  (v) that  certain  Pledge  and  Security
Agreement  dated December 28, 1990 by and between the GP Transferor,  as debtor,
and GIT, as secured party and (vi) that certain Modification  Agreement dated as
of May __,  1997 by and among  GIT,  Love  Funding  Corporation,  McNab,  the GP
Transferor,   the  GK  Transferor  and  the  DK  Transferor  (the  "Modification
Agreement").

     "Affiliate Fee" shall have the meaning set forth in Section 5.2(B).

     "Apportionment Amount" shall have the meaning set forth in Section 5.1.

     "Closing"  and "Closing  Date" shall have the meanings set forth in Article
IV.

     "Closing   Documents"  shall  mean  either  the  "LP  Transferors   Closing
Documents" as defined in Section 6.1, the "GP Transferor  Closing  Documents" as
defined in Section  6.2 or the  "Partnership  Closing  Documents"  as defined in
Section 6.3, without distinction between them.

     "Consideration" shall have the meaning set forth in Section 3.1.

     "Contracts"  shall  mean those  service,  maintenance  and other  contracts
relating to the use,  maintenance  and  operation of the Property or any portion
thereof (including,  without  limitation,  leases or installment sale agreements
for certain items of personal property,  but excluding Leases), which are listed
and  described on the  schedule of  Contracts  attached as Exhibit C hereto (the
"Schedule of  Contracts"),  together with any additions  thereto,  modifications
thereof or substitutions  therefor hereafter entered into in the ordinary course
of business and consistent with past practices of McNab.

     "Cutoff Date" shall mean 11:59 p.m. on the day preceding the Closing Date.


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     "Development  Fee" shall mean the $912,318 fee owed in connection  with the
initial development of the Property.

     "DK  Transferor"  shall have the meaning set forth in the  Recitals to this
Agreement.

     "Environmental Laws" shall mean the Resource  Conservation and Recovery Act
(42  U.S.C.  ss.  6901 et seq.),  as amended by the  Hazardous  and Solid  Waste
Amendments of 1984; the Comprehensive  Environmental Response,  Compensation and
Liability  Act (42  U.S.C.  ss.  9601 et  seq.),  as  amended  by the  Superfund
Amendments   and   Reauthorization   Act  of  1986;   the  Hazardous   Materials
Transportation Act (49 U.S.C. ss. 1801 et seq.); the Toxic Substance Control Act
(15 U.S.C. ss. 2601 et seq.; the Clean Air Act (42 U.S.C. ss. 9402 et seq.); the
Clean Water Act (33 U.S.C. ss. 1251 et seq.); the Federal Insecticide, Fungicide
and  Rodenticide Act (7 U.S.C.  ss. 136 et seq.);  the  Occupational  Safety and
Health Act (29 U.S.C. ss. 651 et seq.); and all other applicable federal,  state
and local environmental laws, (including, without limitation,  obligations under
the  common  law),  ordinances,  orders,  rules and  regulations,  as any of the
foregoing may have been amended, supplemented or supplanted prior to the Closing
Date,  relating  to  regulation  or control  of  hazardous,  toxic or  dangerous
substances,  materials or wastes (collectively  "Hazardous  Materials") or their
handling, storage or disposal or to environmental health and safety.

     "Environmental Reports" shall have the meaning set forth in Section 7.6(Q).

     "Final Adjustment Date" shall have the meaning set forth in Section 5.1.

     "GIT Mortgage" shall mean, collectively, that certain Multifamily Mortgage,
Assignment of Rents and Security  Agreement  dated  December 28, 1990 granted by
McNab in favor of Krupp Governmental  Income Trust, which GIT Mortgage encumbers
the Property,  and that certain  Subordinated  Promissory  Mortgage Note of even
date therewith made by McNab in favor of Krupp Government Income Trust..

     "GK  Transferor"  shall have the meaning set forth in the  Recitals to this
Agreement.

     "GP Assignment" shall have the meaning set forth in Section 6.2(A).

     "GP  Interest"  shall have the  meaning  set forth in the  Recitals to this
Agreement.

     "GP  Transferor"  shall have the meaning set forth in the  Recitals to this
Agreement.

     "GP  Transferor  Closing  Documents"  shall have the  meaning  set forth in
Section 6.2.


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     "knowledge"  or "known" or  grammatical  variations  thereof,  when used in
reference to the  Transferors,  shall mean the actual  knowledge  (as opposed to
constructive,   deemed  or  imputed  knowledge),  acquired  without  independent
investigation,  of David Quade. Whenever reference is herein made to the receipt
of notice (written or oral) by the Transferors or McNab, as the case may be, the
same shall mean only a notice "known" to the Transferors as such term is defined
above.

     "Leases" shall mean those existing leases, tenancies, concessions, licenses
and  occupancies  affecting  or  relating to the  Property  which are listed and
described on the schedule of Leases  attached as Exhibit D hereto (the "Schedule
of Leases"),  together  with any  additions  thereto,  modifications  thereof or
substitutions therefor hereafter entered into in the ordinary course of business
and consistent with past practices of McNab.

     "Liens" shall mean mortgages, deeds of trust, liens, encumbrances, security
interests, leases, easements, encroachments, covenants, restrictions, leases and
other title and survey defects.

     "Limited  Partnership  Agreement"  shall  mean  the  Agreement  of  Limited
Partnership  of the  Partnership  dated as of July  22,  2002 as the same may be
amended or restated from time to time.

     "Losses" shall have the meaning set forth in Section 7.10(A).

     "LP Consideration" shall have the meaning set forth in Section 3.1(A).

     "LP Interests" shall have the meaning set forth in the Recitals hereto.

     "LP  Transferors  Closing  Documents"  shall have the  meaning set forth in
Section 6.1.

     "Management  Agreement" shall mean that certain management  agreement,  and
all  amendments  thereto,  dated January 1, 2002,  between the Manager and McNab
with respect to the Property.

     "Manager"  shall  mean  BRI  OP  Limited  Partnership  a  Delaware  limited
partnership.

     "McNab" shall have the meaning set forth in the Recitals hereto.

     "McNab Partnership  Agreement" shall mean that certain Agreement of Limited
Partnership  of  McNab  dated as of  February  20,  1990,  as  amended  by First
Amendment dated as of August 3, 1990,  Second Amendment dated as of December 11,
1990,  Third Amendment dated as of November 23, 1998 and Fourth  Amendment dated
as of March 24, 2000.


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     "Mortgage"  shall mean the fee  mortgage or deed of trust  encumbering  the
Property,  which  Mortgage is more  particularly  described  in the  Schedule of
Mortgage attached as Exhibit E hereto (the "Schedule of Mortgage").

     "Net  Contribution  Amount"  shall mean the dollar  amount  (which may be a
negative  amount)  determined by  subtracting  from  $19,000,000  the sum of (i)
principal  amount of the  Mortgage  as of the  Closing  Date,  (ii) all  amounts
necessary to satisfy the documents  securing and evidencing the Additional  Loan
and GIT Mortgage in full as of the Closing Date  (including the Interest  Rebate
(as  defined  in  the  Modification  Agreement)  pursuant  to  Section  2 of the
Modification Agreement).

     "Notices"  shall mean all notices,  demands or requests  made  pursuant to,
under or by virtue of this Agreement.

     "Partnership Closing Documents" shall have the meaning set forth in Section
6.3.

     "Partnership  Interest" shall have the meaning set forth in the Recitals to
this Agreement.

     "Partnership  Sub" shall have the meaning set forth in the Recitals to this
Agreement.

     "Partnership  Sub  Closing  Documents"  shall have the meaning set forth in
Section 6.4.

     "Partnership  Unit"  shall mean a common  limited  partnership  unit in the
Partnership.

     "Permitted  Exceptions"  shall  mean (i) all  encumbrances  on  title  (not
including mortgages, deeds of trusts, mechanics' liens, judgment liens and other
monetary liens) which would not have a material  adverse effect on the business,
operation or current use of the Property;  (ii) the Mortgage;  and (iii) the GIT
Mortgage. Without limiting the foregoing, Permitted Exceptions shall include all
Leases.

     "Property" shall have the meaning set forth in the Recitals hereto.

     "Radon  Remediation  Proposal"  shall mean that  certain  Radon  Mitigation
Proposal dated May 14, 2003 from Random Mitigation  Services to Berkshire Realty
Holdings with respect to the Property.

     "Rent  Arrearages"  shall mean Rents due and payable prior to but unpaid as
of the Cutoff  Date,  but shall not  include  additional  amounts  due after the
Closing Date by reason of year-end or other adjustments provided for in Leases.

     "Rents" shall mean fixed,  additional and other amounts payable to McNab by
the tenant under a Lease.


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     "Schedule of Rent  Arrearages"  shall have the meaning set forth in Section
5.10.

     "Schedule of Leases" shall have the meaning set forth in Section 7.6(B).

     "Service Contracts" shall have the meaning set forth in Section 7.6(M).

     "Shortfall Amount" shall have the meaning set forth in Section 6.1(F).

     "Tenants" shall mean tenants, subtenants and/or occupants under the Leases.

     "Transferees"  shall have the  meaning  set forth in the  Recitals  to this
Agreement.

     "Transferors"  shall have the  meaning  set forth in the  Recitals  to this
Agreement.

     1.2 References.  All references in this Agreement to particular Sections or
Articles  shall,  unless  expressly  otherwise  provided,  or unless the context
otherwise  requires,  be deemed to refer to the specific Sections or Articles in
this  Agreement,  and  any  references  to  "Exhibit"  shall,  unless  otherwise
specified,  refer to one of the Exhibits  annexed hereto and, by such reference,
made a part hereof. The words "herein,"  "hereof,"  "hereunder,"  "hereinafter,"
"hereinabove"  and other words of similar  import  refer to this  Agreement as a
whole and not to any particular section, subsection or article hereof.

     1.3 Gender and Number.  Words of any gender shall  include the other gender
and the neuter. Whenever the singular is used, the same shall include the plural
wherever  appropriate,  and  whenever  the  plural is used,  the same shall also
include the singular wherever appropriate.

                                   ARTICLE II

                       Contribution and Purchase and Sale

     2.1 Covenant.  In  consideration  of the mutual  covenants  and  agreements
hereinafter  set  forth  and  subject  to  and in  accordance  with  the  terms,
provisions,  covenants  and  conditions  more  particularly  set  forth  in this
Agreement, (i) the LP Transferors agree to contribute all of the LP Interests to
the Partnership on the Closing Date, and the  Partnership  agrees to accept such
LP Interests from the LP  Transferors,  and to assume all  obligations of the LP
Transferors  under the McNab Partnership  Agreement  accruing from and after the
Closing  Date  and (ii)  the GP  Transferor  agrees  to  transfer  all of the GP
Interest to the  Partnership  Sub, and the Partnership Sub agrees to accept such
GP Interest from the GP Transferor,  and to assume all of the obligations of the
GP Transferor under the McNab Partnership Agreement. accruing from and after the
Closing Date


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     2.2 "As Is".

          (A)  The  Partnership  agrees  to  accept  the  LP  Interests  without
     representation  or  warranty  (including  any  representation  or  warranty
     relating to the Property or the condition  thereof) from the LP Transferors
     or any other person or entity, except as may be expressly set forth in this
     Agreement.

          (B) The  Partnership  Sub  agrees to accept  the GP  Interest  without
     representation  or  warranty  (including  any  representation  or  warranty
     relating to the Property or the  condition  thereof) from the GP Transferor
     or any other person or entity, except as may be expressly set forth in this
     Agreement.

                                   ARTICLE III

                                  Consideration

     3.1 Consideration.

          (A)  The  LP   Transferors   and  the   Partnership   agree  that  the
     consideration  for the LP Interests to be contributed by the LP Transferors
     (the "LP  Consideration")  to the  Partnership  pursuant to this  Agreement
     shall be that number of  Partnership  Units  determined  by  computing  the
     product of (i) the LP Transferors'  aggregate percentage ownership interest
     in McNab (i.e.,  99%) and (ii) an amount equal to (x) the Net  Contribution
     Amount (as adjusted pursuant to Article V) minus the outstanding  principal
     amount of the  Additional  Loan Note on the Closing Date divided by (y) $10
     (it being  agreed that the number of  Partnership  Units to be issued as so
     determined  shall  be  rounded  to  the  nearest  whole  number).   The  LP
     Consideration is to be allocated 50% to each of the LP Transferors.

          (B)  The  GP  Transferor  and  the  Partnership  Sub  agree  that  the
     consideration  for the GP Interest to be  transferred  by the GP Transferor
     (the  "GP  Consideration"  and,  together  with the LP  Consideration,  the
     "Consideration") to the Partnership Sub pursuant to this Agreement shall be
     that number of Partnership Units determined by computing the product of (i)
     the GP Transferor's  percentage  ownership interest in McNab (i.e., 1%) and
     (ii) an  amount  equal  to (x) the Net  Contribution  Amount  (as  adjusted
     pursuant  to  Article  V) minus  the  outstanding  principal  amount of the
     Additional  Loan  Note on the  Closing  Date  divided  by (y) $10 (it being
     agreed that the number of  Partnership  Units to be issued as so determined
     shall be rounded to the nearest whole numbers).

     3.2 Assumption of Obligations.

          (A) Effective as of the Closing Date, the Partnership  will assume all
     of the  obligations  of the LP  Transferors  under  the  McNab  Partnership
     Agreement  to  the  extent  accruing  after  the  Closing,  and  all of the
     obligations of the LP Transferors with respect to the Additional Loan.


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          (B) Effective as of the Closing Date, the  Partnership Sub will assume
     all of  the  obligations  of GP  Transferor  under  the  McNab  Partnership
     Agreement,  to the  extent  accruing  after  the  Closing,  and  all of the
     obligations of the GP Transferor with respect to the Additional Loan.

                                   ARTICLE IV

                                  Closing Date

     The  Closing  shall take place  either (i) on May 27,  2003 or (ii) on such
other date as shall be agreed to by the parties hereto,  at such location as the
Partnership shall designate.  The consummation of the transactions  contemplated
hereby  shall be referred to herein as the  "Closing"  and the date on which the
Closing occurs shall be herein referred to as the "Closing Date."

                                   ARTICLE V

                           Apportionments and Payments

     5.1 Items to Be  Apportioned.  The  following  items  with  respect  to the
Property shall be apportioned (i) between the LP Transferors and the Partnership
at the Closing as of the Cutoff Date and (ii) between the GP Transferor  and the
Partnership  Sub at the  Closing as of the Cutoff  Date,  and each  Transferor's
share  of the net  positive  or  negative  amount  thereof  (the  "Apportionment
Amount")  (i.e.,  49.5%  in the case of GK  Transferor,  49.5% in the case of DK
Transferor and 1% in the case of GP Transferor) shall be reflected by increasing
or decreasing,  as applicable,  such Transferors'  share of the Net Contribution
Amount  by such  Transferors'  share of the  Apportionment  Amount,  subject  to
further  adjustments (to be computed based on the value of the Partnership Units
at such time, as agreed to by the Transferors and the  Transferees,  and paid by
the Transferors or the Transferees,  as applicable,  to the other of them in the
form of  additional  Partnership  Units  (rounded  upward to the  nearest  whole
Partnership  Unit)),  if required,  up to six (6) months  thereafter (the "Final
Adjustment Date") as hereinafter provided:

          (A) real property taxes and assessments (or  installments  thereof) on
     the basis of the fiscal year for which payable;

          (B) water rates and charges;

          (C) sewer taxes and rents;

          (D) interest and other charges payable under the Additional Loan;

          (E) interest and other charges payable under the Mortgage;


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          (F) annual permit,  license and inspection  fees, if any, on the basis
     of the fiscal year for which levied;

          (G) fuel oil and liquid propane gas, if any, at the cost per gallon or
     cubic foot most  recently  charged to McNab with  respect to the  Property,
     based on the supplier's measurements thereof, plus sales taxes thereon;

          (H) Rents as and when collected;

          (I) amounts  payable by McNab under the Contracts  and the  Management
     Agreement including, without limitation,  reimbursements due to, or accrued
     as of, the Cutoff Date for salaries,  wages and other employee benefits and
     charges  (including  accrued vacation pay, pension  contributions and other
     similar  benefits) payable or accrued to on-site employees of the Property;
     and

          (J)  except as may be set forth  below,  all other  items  customarily
     apportioned in connection with the transfer of similar properties similarly
     located.

     5.2 Credits and Deductions.

          (A) There shall be a credit against the Net Contribution  Amount in an
     amount equal to the amount of any cash held by McNab.

          (B) There  shall be  deducted  from the Net  Contribution  Amount  the
     following amounts:

                    (1) the Development Fee; and

                    (2) $353,864 on account of fees owed to affiliates of the LP
               Transferors for work and services  performed at the Property (the
               "Affiliate Fee").

     5.3  Re-Proration of Impositions.  If the real property taxes,  water rates
and charges and sewer taxes and rents  relating to the  Property are not finally
fixed before the Cutoff  Date,  the  apportionments  thereof made at the Closing
shall be based upon the real property  taxes,  water rates and charges and sewer
taxes and rents  assessed for the preceding  fiscal year or  applicable  billing
period and,  after the real  property  taxes,  water rates and charges and sewer
taxes and rents are finally fixed,  the Transferors  and the  Transferees  shall
make a recalculation  of the  apportionment  of the same, and the Transferors or
the  Transferees,  as the  case  may be,  shall  promptly  make  an  appropriate
settlement with the other based upon such recalculation.

     5.4 Utilities.  Water rates and charges,  sewer taxes and rents and gas and
electricity  charges for the Property shall be prorated pursuant to Section 5.1,
based upon the per diem  charges  obtained by using the most  recent  period for
which such readings shall then be available.  On the subsequent taking of actual
readings,  the  apportionment  of such  charges  shall be  recalculated  and the
apportionment between the Transferors and the Transferees readjusted and settled
based upon such readings.


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     5.5 Rent Arrearages. Rents collected or received from a Tenant which, as of
the Closing  Date,  was in arrears in the payment of Rents,  shall be applied as
follows:  (i) in the case of Rents  received from a Tenant which,  at the Cutoff
Date,  was not more than two (2) months in arrears in the payment of Rents,  the
Rents so collected  shall be applied first to such arrears and then to any other
amounts  which may then be due after the  Cutoff  Date;  and (ii) in the case of
Rents  received from a Tenant which,  at the Cutoff Date,  was more than two (2)
months in arrears in the payment of Rents, the Rents so collected shall first be
applied to any amounts due after the Cutoff Date and any balance remaining shall
be applied to the arrears.  All costs and expenses incurred by McNab in bringing
any action or  proceeding  to  collect  Rent  Arrearages  from any Tenant who is
delinquent  on the  Closing  Date  shall  be borne  by the  Transferees  and the
Transferors  in proportion to the  collected  amounts (or the share  thereof) to
which  each  may be  entitled  hereunder  and the  Transferors'  portion  may be
deducted from the Apportionment Amount. The Transferors shall have no right with
respect to Rent Arrearages  collected after the Final Adjustment Date; provided,
however,  if McNab shall  institute a legal action or  litigation to collect any
portion of such Rent  Arrearages  after the Closing  Date and prior to the Final
Adjustment Date, the Transferors  shall retain the right to receive its share of
such Rent Arrearages, net of litigation costs and expenses, if collected.

     5.6 Security Deposits.  The Schedule of Leases,  attached hereto as Exhibit
H,  includes a schedule  setting  forth the  unapplied  portion of any  security
deposits  which  have  been  deposited  with  McNab or its  agents  (or with any
predecessors  in  interest to McNab with  respect to the  Property to the extent
said  predecessors  have turned over security deposits to McNab or given McNab a
credit therefor) by any Tenants.  At the Closing,  the Net  Contribution  Amount
shall be reduced by the amount of the aggregate amount of the security  deposits
set forth on such  schedule  which are no longer on deposit  with McNab.  At the
Closing,  the Net Contribution Amount shall be increased by the aggregate amount
of interest  accrued prior to the Closing Date on any security  deposits held by
McNab  except to the extent such  interest is required to be paid to any Tenants
pursuant to their respective Leases.

     5.7 Reserves and  Deposits.  At the Closing,  the Net  Contribution  Amount
shall be increased by the amount of any  reserves,  escrow  deposits or accruals
made with,  or held by,  the  holders of the  Mortgage,  Additional  Loan or any
insurance carriers,  together with all interest earned thereon, if any, which is
payable to the  Transferors or McNab,  for real property taxes and  assessments,
insurance premiums or other items.

     5.8 Settlement of Adjustments.

          (A) On or before the Final Adjustment Date, the adjustments made as of
     the Closing Date shall be further adjusted for any differences  between the
     actual  apportionment  or adjustment based on calculations as of the Cutoff
     Date and the  amount  thereof  estimated  on the  Closing  Date and the net
     amount  of any such  adjustments  shall be paid in the form of  Partnership
     Units, as provided in the introductory



                                                                              11


     paragraph of Section 5.1, to the  Transferees  or to the  Transferors.  Any
     payments  which  are due on or  after  the  Final  Adjustment  Date and are
     attributable  to periods on or before the Cutoff  Date will be  apportioned
     within  ninety  (90) days of receipt of such  payment and the net amount of
     any such adjustments shall be paid to the Transferees or to the Transferors
     in the form of Partnership Units.

          (B) Any errors or omissions in computing apportionments at the Closing
     and from time to time after Closing shall be corrected  promptly after such
     discovery.

     5.9  Inspection of Books and Records.  Prior to Closing and upon request of
the  Transferees , the  Transferors  shall from time to time make  available for
inspection by the  Transferees or their  respective  designees,  at the place or
places where they are regularly kept and maintained,  during reasonable business
hours,  the records and books of account  relating to the Property  and,  during
such  inspection,  shall permit extracts and copies to be made from said records
and books of account,  at the Transferees'  expense.  The Transferors shall have
the right from time to time  subsequent  to the Closing to examine and audit the
records and books of account relating to the Property.

     5.10  Schedule  of Rent  Arrearages.  Attached  as  Exhibit  F hereto  is a
schedule of Rent Arrearages (the "Schedule of Rent Arrearages"),  which schedule
sets forth each Tenant which is in arrears  under a Lease and the items of Rents
with  respect to which such  Tenant is in  arrears  as of the Cutoff  Date,  the
amount of each item and the period of such arrearage.

     5.11 Survival.  Unless otherwise provided in, or reasonably inferable from,
this Article V, the provisions of this Article V shall survive until thirty days
after,  or reasonably  inferable  from,  the Final  Adjustment  Date except with
respect to claims made prior to the end of such thirty-day period.

                                   ARTICLE VI

                                Closing Documents

     6.1 LP Transferors Closing Documents. At the Closing (or subsequent thereto
with  respect  to  documents   contemplated   by  subsection  (G)  below),   and
simultaneously  with the issuance to the LP Transferors of the Partnership Units
by the  Partnership  (plus payment of any sums which the  Partnership has agreed
herein to pay to the LP  Transferors  at the  Closing,  but less any  credits to
which the Partnership may be entitled  hereunder),  and simultaneously  with the
Partnership's  delivery  of all of the  Partnership  Closing  Documents,  the LP
Transferors  shall deliver,  or cause to be delivered,  the following  documents
(herein referred to collectively as the "LP Transferors Closing Documents"):

          (A) An instrument ("LP Assignment") in form reasonably satisfactory to
     the LP Transferors and the  Partnership,  assigning the LP Interests to the



                                                                              12


     Partnership (but without warranty or  representation,  it being agreed that
     all representations and warranties with respect to the LP Interests are set
     forth in this Agreement).

          (B) An affidavit from each of the LP Transferors, in each case stating
     its U.S. taxpayer  identification number or social security number and that
     it is not a "foreign  person" as defined by Internal  Revenue  Code section
     1445(f)(3).

          (C) An  amendment  to the  limited  partnership  agreement  of  McNab,
     evidencing the withdrawal of each of the LP Transferors,  and the admission
     of the Partnership, as the sole limited partners of McNab.

          (D) An updated set of Schedules C, D, F and H to this Agreement.

          (E)  An  instrument  in  form   reasonably   satisfactory  to  the  LP
     Transferors and the Partnership, assigning to the Partnership all of the LP
     Transferors' right, title and interest in respect of the Additional Loan.

          (F) In the event the Net Contribution  Amount (as adjusted pursuant to
     Article V) minus the  outstanding  principal  amount of the Additional Loan
     Note on the Closing Date results in a negative dollar amount (such negative
     amount,  the "Shortfall  Amount"),  the LP Transferors shall contribute the
     Shortfall Amount to McNab in cash.

          (G) Such  other  documents,  instruments  or  agreements  which the LP
     Transferors  are  required  to deliver to the  Partnership  pursuant to the
     provisions of this  Agreement or which the  Partnership  may,  either at or
     subsequent to the Closing, reasonably deem necessary in order to consummate
     the transactions contemplated by this Agreement.

     6.2 GP Transferor Closing Documents.  At the Closing (or subsequent thereto
with  respect  to  documents   contemplated   by  subsection  (D)  below),   and
simultaneously  with the transfer to the GP Transferor of the Partnership  Units
by the Partnership  Sub, (plus payment of any sums which the Partnership Sub has
agreed herein to pay to the GP  Transferor at the Closing,  but less any credits
to which the Partnership Sub may be entitled  hereunder) and simultaneously with
the Partnership Sub's delivery of all of the Partnership Sub Closing  Documents,
the GP  Transferor  shall  deliver,  or cause  to be  delivered,  the  following
documents to the relevant  parties  (herein  referred to collectively as the "GP
Transferor Closing Documents"):

          (A) An instrument ("GP Assignment") in form reasonably satisfactory to
     the GP Transferor and the Partnership Sub, assigning the GP Interest to the
     Partnership Sub (but without  warranty or  representation,  it being agreed
     that all representations and warranties with respect to the GP Interest are
     set forth in this Agreement).


                                                                              13


          (B) An amendment to both of the limited  partnership  certificate  and
     the limited  partnership  agreement of McNab,  evidencing the withdrawal of
     the GP Transferor,  and the admission of the  Partnership  Sub, as the sole
     general partner of McNab.

          (C) An instrument in form reasonably satisfactory to the GP Transferor
     and the  Partnership  Sub,  assigning to the  Partnership Sub all of the GP
     Transferor's right, title and interest in respect of the Additional Loan.

          (D) Such  other  documents,  instruments  or  agreements  which the GP
     Transferor  is required to deliver to the  Partnership  Sub pursuant to the
     provisions of this Agreement or which the  Partnership  or Partnership  Sub
     may,  either at or subsequent to the Closing,  reasonably deem necessary in
     order to consummate the transactions contemplated by this Agreement.

     6.3 Partnership  Closing  Documents.  At the Closing (or subsequent thereto
with respect to documents contemplated by subsection (C) below),  simultaneously
with the LP Transferors'  delivery of the LP Transferors Closing Documents,  the
Partnership  shall  deliver  to the LP  Transferors  (and  with  respect  to the
document  contemplated  by  subsection  (A)  below,  to the GP  Transferor)  the
following documents (herein referred to collectively as the "Partnership Closing
Documents"):

          (A) An  Amendment  to the Amended and  Restated  Agreement  of Limited
     Partnership  of the  Partnership,  executed by the partners  thereof (which
     execution  may be,  in the case of the  existing  limited  partners  of the
     Partnership,  by power of attorney as provided in said Amended and Restated
     Agreement of Limited  Partnership)  to be executed by the  Transferors  and
     providing for the issuance to the LP  Transferors  and the GP Transferor of
     the Partnership Units which the LP Transferors and the GP Transferor are to
     receive pursuant to the terms of this Agreement.

          (B) An executed  counterpart of the instrument  referred to in Section
     6.1(A) above, evidencing the Partnership's assumption of the obligations of
     the LP Transferors under the McNab Partnership Agreement.

          (C) An executed  counterpart of the instrument  referred to in Section
     6.1(E),  evidencing the Partnership's  assumption of the obligations of the
     LP Transferors in respect of the Additional Loan.

          (D) An instrument in form  reasonably  satisfactory  to the Transferor
     and  the  Partnership,  evidencing  the  Partnership's  assumption  of  the
     personal obligations of the Transferors,  or any of them, in respect of the
     loan secured by the Mortgage.

          (E) A certified copy of (i)  resolutions of the general partner of the
     Partnership, authorizing the entering into of the transactions contemplated
     by this  Agreement  by the  Partnership  and  Partnership  Sub and  (ii) an
     incumbency  certificate  evidencing the authority of the persons  executing
     the  various  Closing  documents on



                                                                              14


          behalf  of the  Partnership  and  the  Partnership  Sub,  all in  form
     reasonably acceptable to the Transferors.

          (F) Such other documents, instruments or agreements, if any, which the
     Partnership  may be required to deliver to the LP  Transferors  pursuant to
     the provisions of this Agreement or which the LP Transferors may, either at
     or subsequent to the Closing  reasonably  deem  necessary to consummate the
     transactions contemplated by this Agreement.

     6.4  Partnership  Sub Closing  Documents.  At the  Closing  (or  subsequent
thereto with respect to the documents  contemplated  by  subsection  (C) below),
simultaneously  with the GP Transferor's  delivery of the GP Transferor  Closing
Documents,  Partnership  Sub shall  deliver to the GP  Transferor  the following
documents (the "Partnership Sub Transferor Closing Documents"):

          (A)  An  executed   counterpart  of  the  GP  Assignment,   evidencing
     Partnership  Sub's assumption of the obligations of the GP Transferor under
     the McNab Partnership Agreement;

          (B) An executed  counterpart of the instruments referred to in Section
     6.2(B); and

          (C) An executed  counterpart of the instrument  referred to in Section
     6.2(C),  evidencing the Partnership  Sub's assumption of the obligations of
     the GP Transferor in respect of the Additional Loan; and

          (D) Such other documents,  instruments or agreements which Partnership
     Sub is required to deliver to the GP Transferor  pursuant to the provisions
     of this Agreement or which the Transferors  may, either at or subsequent to
     the  Closing,   reasonably  deem  necessary  in  order  to  consummate  the
     transactions contemplated by this Agreement.

     6.5 Further  Assurances.  The Transferors and the Transferees agree, at any
time and from time to time after the  Closing,  to  execute,  acknowledge  where
appropriate and deliver such further  instruments and documents and to take such
other action as the other of them may  reasonably  request in order to carry out
the intent and purpose of this  Agreement.  The  provisions  of this Section 6.5
shall survive the Closing.

                                  ARTICLE VII

              Representations and Warranties; Conditions to Closing

     7.1 Investment Representations. Each of the Transferors hereby acknowledges
that it (i) has been given full and complete  access to the  Partnership and its
management in connection with this Agreement and the  transactions  contemplated
hereby,  (ii) has had the  opportunity  to review all documents  relevant to its
decision to enter into this Agreement,  and (iii) has had the opportunity to ask
questions of the



                                                                              15


Partnership and its management  concerning its investment in the Partnership and
the  transactions  contemplated  hereby.  The Transferors  acknowledge that they
understand  that the  Partnership  Units to be  acquired  hereunder  will not be
registered  under the Securities  Act of 1933, as amended,  in reliance upon the
exemption  afforded by Section  4(2) thereof for  transactions  by an issuer not
involving any public offering, and will not be registered or qualified under any
applicable state  securities  laws. The Transferors  represent that (i) they are
acquiring  such  Partnership  Units  for  investment  only and not with any view
toward distribution thereof in violation of any applicable  securities laws, and
it will not sell or  otherwise  dispose  of such  Partnership  Units  except  in
compliance with the  registration  requirements  or exemption  provisions of any
applicable  securities  laws and in  accordance  with the  terms of the  Limited
Partnership Agreement,  (ii) their economic circumstances are such that they are
able to bear  all  risks  of the  investment  in the  Partnership  Units  for an
indefinite  period  of  time,  including  the  risk  of a  complete  loss of its
investment in the Partnership Units, (iii) they have knowledge and experience in
financial and business matters sufficient to evaluate the risks of investment in
the Partnership Units, and (iv) they have consulted with its own counsel and tax
advisors,  to the extent  deemed  necessary  by it, as to all legal and taxation
matters  covered by this Agreement and have not relied upon the  Partnership for
any  explanation  of the  application  of the  various  United  States  or state
securities  laws or tax laws with regard to its  acquisition of the  Partnership
Units.  The  Transferors  further  acknowledge and represent that they have made
their own independent investigation of the Partnership and the business proposed
to be  conducted  by the  Partnership.  Such  investigation  does not affect the
Transferors'  right  to  rely  on  the  representations  and  warranties  of the
Partnership  contained in this Agreement and the Limited Partnership  Agreement.
The representations  and warranties  contained in this Section shall survive the
Closing without limitation of time.

     7.2 Partnership and  Partnership Sub  Acknowledgments.  The Partnership and
the Partnership Sub represent, warrant, acknowledge and agree that (a) they have
made an  independent  investigation  and  examination  of the Property  (and all
matters  related  thereto),  are  familiar  with the  physical  condition of the
Property,  and have  reviewed  (i) the  Leases,  (ii) the  Mortgage,  (iii)  the
Additional  Loan, (iv) the Contracts and (v) the  Environmental  Reports and (b)
except as,  and solely to the  extent,  expressly  set forth in this  Agreement,
neither the Transferors nor any officer, employee, partner, agent or attorney of
either  of the  Transferors  has  made  any  oral  or  written  representations,
warranties or statements of any nature or kind  whatsoever to the Partnership or
Partnership  Sub, or its  officers,  employees,  partners,  agents or attorneys,
whether express or implied,  with respect to the Property,  or McNab, except as,
and  solely  to  the  extent,  expressly  set  forth  in  this  Agreement.  Such
examination   does  not   affect  the   Partnership's   right  to  rely  on  the
representations and warranties contained in this Agreement.  The Partnership and
Partnership  Sub further  agree that the  Transferors  shall not be bound in any
manner   whatsoever  by  any  guarantees,   promises,   projections,   operating
statements,  set-ups or other information  pertaining to the Property,  or McNab
made,  furnished or claimed to have been made or furnished by the Transferors or
McNab or any other person or entity, including, without limitation, any officer,
trustee,  partner,  employee,  agent,  attorney or other person  representing or
purporting to represent the



                                                                              16


Transferors  or McNab or any  other  person  or  entity,  whether  orally  or in
writing,  except  as,  and  solely to the  extent,  expressly  set forth in this
Agreement.  The representations  and warranties  contained in this Section shall
survive the Closing without limitation of time.

     7.3  Partnership and Partnership  Sub  Representations  and Warranties.  In
addition to any other  representations  and warranties of the Partnership herein
contained,  the Partnership and Partnership Sub further represent and warrant to
the Transferors as follows:

          (A) The Partnership is a limited  partnership and Partnership Sub is a
     limited  liability  company,  in each case duly organized under the laws of
     the State of Delaware  with full right,  power and authority to fulfill all
     of its obligations hereunder or as herein contemplated.

          (B) The execution and delivery by the  Partnership  of this  Agreement
     and  the  Partnership   Closing  Documents  and  the  consummation  by  the
     Partnership of the  transactions  contemplated  by this Agreement have been
     duly  authorized by all requisite  action of the  Partnership  and no other
     action or approval is required to enable the  Partnership to consummate the
     transactions  contemplated  by this Agreement and the  Partnership  Closing
     Documents in accordance  with the terms hereof and thereof.  This Agreement
     and the Partnership Closing Documents have been duly executed and delivered
     by the Partnership, or an authorized representative of the Partnership, and
     constitute  a legal,  valid  and  binding  obligation  of the  Partnership,
     enforceable against the Partnership in accordance with the terms hereof and
     thereof,  except as the enforceability hereof and thereof may be limited by
     bankruptcy, insolvency, reorganization,  fraudulent conveyance or transfer,
     moratorium  or similar laws  affecting  creditors'  rights  generally or by
     general principles of equity (regardless of whether such  enforceability is
     considered in a proceeding at law or in equity).

          (C) No  consent,  waiver,  approval  or  authorization  of, or filing,
     registration or qualification  with, or notice to, any governmental unit or
     authority  or any other  person or entity (in each case,  a  "consent")  is
     required to be made,  obtained or given by the  Partnership  in  connection
     with the  execution,  delivery  and  performance  of this  Agreement by the
     Partnership.

          (D)  Assuming  compliance  with the  terms of this  Agreement  and the
     Limited  Partnership  Agreement  by the  parties  thereto  other  than  the
     Partnership,  none  of the  execution,  delivery  or  performance  of  this
     Agreement by the  Partnership  does or will,  with or without the giving of
     notice,  lapse of time or both,  violate,  conflict  with or  constitute  a
     default  under  any  term  or  condition  of (i)  the  Limited  Partnership
     Agreement or any agreement to which the  Partnership is a party or by which
     the Partnership is bound whether or not such agreement relates specifically
     to the Property,  or (ii) any terms or provisions of any judgment,  decree,
     order,  statute,  injunction,  rule or  regulation of a  governmental  unit
     applicable to the Partnership.


                                                                              17


          (E) The Partnership has furnished the Transferors  with true,  correct
     and  complete  copies  of  the  Limited  Partnership   Agreement  with  all
     amendments thereto.

          (F) The  representations  and  warranties  made  with  respect  to the
     Partnership  in  Section  7.3(B),  (C) and (D) are  true and  correct  with
     respect to Partnership  Sub,  except that for purposes of said Section (B),
     the term "Partnership",  as used in such section,  shall be deemed to refer
     to Partnership  Sub, the term  "Partnership  Closing  Documents" as used in
     such  section,  shall be deemed  to refer to the  Partnership  Sub  Closing
     Documents  and  references  in  such  section  to the  Limited  Partnership
     Agreement shall be deemed references to the organizational documents of the
     Partnership Sub.

     7.4 LP  Transferors'  Representations  and  Warranties.  In addition to any
other representations and warranties of the LP Transferors herein contained, the
LP Transferors represent and warrant to the Partnership as follows:

          (A)  None of the LP  Transferors  is a  "foreign  person"  within  the
     meaning of sections 1445(f) of the Internal Revenue Code.

          (B) Delivery.  The LP Transferors  have furnished the Partnership with
     true, correct and complete copies of the McNab Partnership Agreement, which
     agreement is in full force and effect, and no party to such agreement is in
     default in any material respect thereunder.

          (C) LP Interests.  The LP Transferors each own their LP Interests free
     and clear of all Liens other than liens securing the  Additional  Loan. The
     statements in the first two "WHEREAS"  clauses  hereof are true and correct
     as to the LP Transferors and the LP Interests.

          (D)  Enforceability.  This  Agreement and the LP  Transferors  Closing
     Documents  have been duly and  validly  executed  and  delivered  by the LP
     Transferors.  This Agreement and the LP Transferors  Closing  Documents are
     valid and binding upon,  and  enforceable  against,  the LP  Transferors in
     accordance with their terms,  except as the  enforceability  thereof may be
     limited by bankruptcy, insolvency, reorganization, fraudulent conveyance or
     transfer, moratorium or similar laws affecting creditors' rights generally,
     or  by  general   principles   of  equity   (regardless   of  whether  such
     enforceability is considered in a proceeding at law or in equity).

     7.5 GP Transferor  Representations and Warranties. In addition to any other
representations  and warranties of the GP Transferor  herein  contained,  the GP
Transferor represents and warrants to the Partnership Sub as follows:

          (A)  Authority.  The GP  Transferor  has been  duly  organized  and is
     validly  existing as a Massachusetts  corporation  with all requisite power
     and  authority  to own the GP Interest and to conduct the business in which
     it is engaged  and to enter into and  perform  its  obligations  under this
     Agreement,  the GP



                                                                              18


          Transferor  Closing Documents and any other documents  contemplated by
     this  Agreement.  The GP  Transferor is not a "foreign  person"  within the
     meaning of sections 1445(f) of the Internal Revenue Code.

          (B)  Ownership  of the GP  Interest.  The GP  Transferor  owns  the GP
     Interest  free  and  clear of all  Liens  other  than  liens  securing  the
     Additional  Loan. The statements in the first two "WHEREAS"  clauses hereof
     are true and correct.

          (C)  Enforceability.  The execution,  delivery and performance of this
     Agreement and the GP Transferor Closing Documents by the GP Transferor have
     been  duly  and  validly  authorized  by all  necessary  actions  of the GP
     Transferor.  This  Agreement and the GP Transferor  Closing  Documents have
     been duly and validly  executed and  delivered by the GP  Transferor.  This
     Agreement  and the GP  Transferor  Closing  Documents are valid and binding
     upon, and enforceable  against,  the GP Transferor in accordance with their
     terms,  except as the enforceability  thereof may be limited by bankruptcy,
     insolvency,  reorganization,  fraudulent conveyance or transfer, moratorium
     or  similar  laws  affecting  creditors'  rights  generally,  or by general
     principles  of  equity  (regardless  of  whether  such   enforceability  is
     considered in a proceeding at law or in equity).

     7.6 Transferors' Joint  Representations and Warranties.  In addition to any
other  representations  and warranties of the Transferors herein contained,  the
Transferors  represent and warrant to the  Partnership  and  Partnership  Sub as
follows:

          (A)  Conflicts.  The  execution  and delivery of the Agreement and the
     consummation  of the  transactions  contemplated  hereby by the Transferors
     does not and will  not (i)  violate  or  conflict  with the  organizational
     documents of McNab or the GP Transferor,  (ii) violate or conflict with any
     judgment,  decree or order of any court  applicable  to or affecting any of
     the  Transferors or McNab,  (iii)  assuming all required  consents of third
     parties are  obtained,  breach the  provisions  of, or constitute a default
     under, any contract,  mortgage, loan agreement,  note, lease, joint venture
     or  partnership  agreement or other  instrument or agreement  obligation to
     which  any of the  Transferors  or McNab are a party or by which any of the
     Transferors  or McNab are bound,  (iv) violate or conflict  with any law or
     governmental regulation or permit applicable to any Transferor or McNab, or
     (v) require any authorization,  approval, consent, license, exemption of or
     filing  or  registration  (in each  case,  a  "consent")  with any court or
     governmental   department,    commission,    board,   bureau,   agency   or
     instrumentality,  foreign or domestic or any other person or entity,  which
     consents have been obtained and true and correct  copies of which  consents
     have been made available to the Partnership.

          (B) Leases.  The Schedule of Leases (the  "Schedule  of Leases")  sets
     forth with  respect to each Lease  (whether  or not the terms of each Lease
     has  commenced as of the date of such  Schedule) (i) the name of the Tenant
     under each Lease, (ii) the commencement date of such Lease,  (iii) the term
     of such  Lease  and (iv) the  annual  rent  payable  by such  Tenant.  This
     Schedule of Leases is complete and accurate in all material  respects,  and
     originals  and/or  true  and  complete  copies  of each  such  Lease,  each
     modification,  amendment, extension and assignment thereof, have heretofore
     either been  furnished  to the  Partnership  or been made  available to the
     Partnership for



                                                                              19


     inspection.  To the  Transferors'  knowledge,  there  are no  other  leases
     affecting  any portion of the Property  except as set forth on the Schedule
     of Leases and except for those, if any, entered into after the date of such
     Schedule in the ordinary course of business  consistent with past practices
     of McNab. No Tenant has paid more than one month's rent or other charges in
     advance, except for security deposits.

          (C)  Modification  of Leases.  The Leases are  unmodified  and in full
     force and  effect as of the date of the  Schedules  of Leases  (except  for
     those  designated  on the Schedule of Leases as "out for  signature"),  and
     constitute the sole agreements and understandings (written or oral) between
     McNab and the  parties  thereto.  There  have been no changes in the Leases
     since the date of such  Schedules  except  for those  made in the  ordinary
     course of business.

          (D)  Lease  Defaults.  Except  as set  forth in the  Schedule  of Rent
     Arrearages and the schedule of litigation attached as Exhibit G hereto (the
     "Schedule of Litigation"),  no action, proceeding or arbitration is pending
     in respect  of any Lease,  the  resolution  of which  would have a material
     adverse  effect  on any of the  Property,  and  except  as set forth in the
     Schedule of Rent  Arrearages,  (i) the Transferors have no actual knowledge
     of any  breaches of or  defaults  under any Lease by the Tenant or landlord
     thereunder which would have a material adverse effect on the Property,  and
     (ii) all payments payable by or due to McNab under any Lease to the date of
     such  Schedule  have been made and received  without any  material  default
     thereunder  or,  to  the  Transferors'  knowledge,  without  any  defenses,
     counterclaims,  offsets, concessions, rebates, credits or allowances having
     been claimed or given.

          (E) Security  Deposits.  All security  deposits that have been paid to
     McNab by or on behalf of any of the Tenants are as set forth in Exhibit H.

          (F) Violations.  Neither any of the Transferors nor McNab has received
     written  notice  from any  governmental  authority  claiming or noting with
     respect  to the  Property  any  violation  of any  federal  or  local  law,
     regulation,  requirement or ordinance,  which  violation  remains  uncured,
     except as set forth in Exhibit I.

          (G) Liabilities.  Except for (i) obligations and liabilities  referred
     to, or  contained  in or  arising  under  agreements  referred  to, in this
     Agreement  (including  without  limitation  the Leases,  the Mortgage,  the
     Service   Contracts,   the  McNab  Partnership   Agreement  and  the  other
     organizational  documents of McNab),  including obligations and liabilities
     for which  adjustments  are  being  made  under  Article  V,  (ii)  matters
     affecting  title to the Property and (including real estate taxes and water
     and  sewer  rents  not yet  due and  payable),  (iii)  requirements  of law
     generally  applicable to the Property and/or McNab (including laws imposing
     taxes, assessments or other charges or the submission of reports or returns
     with respect  thereto),  (iv) items set forth in the  financial  statements
     described in Section  7.6(K)  hereof,  (v) matters which are the subject of
     the  litigations  listed (or not  required to be listed) in Exhibit G, (vi)
     other  liabilities  and  obligations  arising  in the  ordinary  course  of
     business  and  (vii)  items  set  forth  on  Exhibit  J, to the best of the
     Transferors' knowledge, McNab does not have any liabilities or obligations.



                                                                              20


          (H)  Business  Purpose.  McNab  has not  engaged  in any  activity  or
     business other than the  acquisition,  ownership,  development,  financing,
     leasing and  management  of the Property or  interests  therein and actions
     incidental thereto.

          (I)  Employees.  McNab has no employees  other than those set forth on
     Exhibit K, for whom all  applicable  governmental  filings and tax payments
     have been made. There are no employment,  union, collective bargaining,  or
     similar agreements or arrangements between McNab and any employees; and, to
     the Transferors' knowledge and, except as set forth on Exhibit L, there are
     no pending  claims  which have been  asserted in writing or any  threatened
     claim  against  McNab by or on behalf  of any  employees  whose  employment
     relates to the Property.

          (J) Tax  Filings.  To the  best  of the  Transferors'  knowledge,  all
     Federal,  state and local tax returns  required to be filed by or on behalf
     of the  Transferors,  and  McNab  have  been  timely,  duly and  accurately
     completed and filed, and all Federal, state and local taxes due and payable
     by any of such  entities  have  been  paid in full,  except as set forth on
     Exhibit M. No tax certiorari or audit  proceedings are currently pending or
     in progress with respect to the Property  except as set forth on Exhibit N.
     The Transferors  have delivered or made available to the Partnership  true,
     correct  and  complete  copies  of each  such tax  return  in  Transferors'
     possession, if any, filed prior to the date hereof.

          (K) Financial  Statements.  The financial  statements of McNab for the
     most recent  fiscal year fairly  present,  in all  material  respects,  its
     respective   financial  positions,   its  respective   operations  and  its
     respective cash flows for the periods indicated.  Such financial statements
     have been, in all material respects,  accurately derived from the books and
     records of McNab.

          (L)  Insurance.  There is in full  force  and  effect  with  reputable
     insurance  companies  casualty and liability  insurance with respect to the
     Property in compliance  with the  requirements  contained in all applicable
     Leases  and the  Mortgage.  No  written  notice  of  cancellation  has been
     received by the  Transferors or McNab with respect to any insurance  policy
     maintained by any of such entities and, to the Transferors' knowledge, none
     is threatened;  and the Transferors and McNab have not received any written
     notice that any act is required to maintain any such insurance policy which
     has not heretofore been accomplished.

          (M) Service  Contracts.  The Schedule of  Contracts  lists all service
     contracts in effect with respect to the Property (the "Service Contracts"),
     if any,  and except as set forth in the  Schedule  of  Contracts,  all such
     Service  Contracts  are in full force and effect in  accordance  with their
     respective  terms as of the date of such  Schedule  and,  together with the
     Management  Agreement,  constitute the sole  agreements and  understandings
     (written  or  oral)  of the  Transferors  and  McNab  with  respect  to the
     operation and  maintenance of the Property or any part thereof,  and to the
     Transferors' knowledge,  such entities have not given and have not received
     any  written  notice of default  which  remains  outstanding  with  respect
     thereto.  The Transferors  have no



                                                                              21


     knowledge of any breaches of or defaults under any service contracts by any
     party  thereunder  which  would  have  a  material  adverse  effect  on the
     Property.

          (N) Management Agreement. The Transferors have heretofore delivered or
     made available to the Partnership true,  correct and complete copies of the
     Management  Agreement.  The  Management  Agreement  has  not  been  further
     modified and is in full force and effect in accordance  with their terms as
     of the date hereof and  constitute the sole  agreements and  understandings
     (written  or  oral) of the  Transferors,  and  McNab  with  respect  to the
     management of the Property or any part  thereof.  The  Transferors  have no
     knowledge  of  any  material  breach  of  or  material  default  under  the
     Management Agreement.

          (O)  Leasing  or  Brokerage  Commissions.  There  are  no  leasing  or
     brokerage commissions which will be due after the Cutoff Date in respect of
     any Leases.

          (P) Licenses and Permits. To the Transferors'  knowledge,  McNab holds
     all licenses, permits and authorizations with respect to the use, operation
     and  occupancy  of the  Property  the failure of which to hold would have a
     materially  adverse  effect on the current  ownership  and operation of the
     Property.

          (Q) Environmental  Compliance.  The Transferors have heretofore either
     furnished  to the  Partnership  or made  available to the  Partnership  for
     inspection complete and accurate copies of all reports, studies,  analyses,
     Phase I reports, notices from any governmental authority, correspondence or
     agreements with any person or governmental  authority and similar documents
     relating  to   environmental   matters   on,  in  or  under  the   Property
     (collectively, including the Radon Remediation Proposal, the "Environmental
     Reports"). Except as disclosed in the Environmental Reports, neither of the
     Transferors nor McNab has received any written notice from any governmental
     entity or other person that the Property,  or current or former  operations
     on  the  Property,   is  not  or  has  not  been  in  compliance  with  any
     Environmental  Laws or that any such entity has any material liability with
     respect thereto. To the Transferors' knowledge,  except as set forth in the
     Environmental  Reports,  there  are  no  underground  tanks  for  Hazardous
     Materials,  active or abandoned, at the Property and no Hazardous Materials
     have been released in a reportable quantity (where such a quantity has been
     established  by statute,  ordinance,  rule,  regulation or order) at, on or
     under the Property.

          (R)  Condemnation.   (i)  No  condemnation  proceeding  in  which  the
     Transferors  or McNab have been served with process is pending with respect
     to all or any part of the Property,  (ii) to the Transferors' knowledge, no
     condemnation proceeding in which no such process has been served is pending
     with  respect  to  all  or  any  part  of the  Property  and  (iii)  to the
     Transferors'  knowledge,  no taking in condemnation or by eminent domain is
     threatened with respect to all or any part of the Property.

          (S)  Litigation.  Except as set forth on the  Schedule of  Litigation,
     there is no  litigation,  action  or suit  which is not  fully  covered  by
     insurance,  excluding  deductible  or  retained  amounts,  and  there is no
     governmental, administrative or




                                                                              22


     arbitration  proceeding or  investigation  before any court or governmental
     agency  or body,  domestic  or  foreign  pending  or,  to the  Transferors'
     knowledge,  threatened,  before any court or  governmental  agency or body,
     domestic  or foreign,  or any  unsatisfied  arbitration  awards or judicial
     orders against or affecting the Transferors, McNab or the Property.

          (T) Bankruptcy. No attachments, execution proceedings, assignments for
     the benefit of creditors, insolvency,  bankruptcy,  reorganization or other
     similar  proceedings  are  pending  or,  to  the  Transferors'   knowledge,
     threatened   against  the  Transferors  or  McNab,  nor  are  any  of  such
     proceedings anticipated or contemplated by the Transferors or McNab.

          (U) Mortgages. The Schedule of Mortgage sets forth with respect to the
     Mortgage  (i) the name of the holder  thereof,  (ii) the  unpaid  principal
     balances as of the date hereof,  (iii) the annual debt service  thereunder,
     (iv) the maturity  date  thereof,  (v) the  estimated  balloon  payment due
     thereunder  on  maturity  and (vi) the  earliest  date of which  all  notes
     secured  thereby can be prepaid.  The Mortgage is in full force and effect,
     the  Transferors  and McNab have not received any written notice of default
     under the Mortgage, and, to the Transferors' knowledge, no material default
     on the part of McNab or any other party thereto,  exists under the Mortgage
     and no event has  occurred  which  with the  giving of notice or passage of
     time,  or both,  would  constitute a material  default  under the Mortgage.
     Originals  and/or  true  and  complete  copies  of the  Mortgage,  all loan
     documents  relating  thereto,  and each  modification and amendment thereof
     have  heretofore  either been  furnished  to the  Partnership  or been made
     available to the  Partnership for  inspection.  The  outstanding  principal
     balance of the Mortgage as of May 27, 2003 will be $13,301,440.64.

          (V)  Additional  Loan and GIT Mortgage.  The  documents  evidencing or
     securing  the  Additional  Loan and the GIT  Mortgage are in full force and
     effect,  the  Transferors  have not received any written  notice of default
     with  respect  to the  Additional  Loan or the GIT  Mortgage,  and,  to the
     Transferors'  knowledge,  no material  default  exists with  respect to the
     Additional  Loan or the GIT Mortgage  and no event has occurred  which with
     the  giving of notice or  passage  of time,  or both,  would  constitute  a
     material  default with respect to the Additional  Loan or the GIT Mortgage.
     Originals  and/or true and complete  copies of the documents  evidencing or
     securing the Additional  Loan and the GIT Mortgage,  and each  modification
     and amendment thereof,  have been furnished to the Partnership.  The amount
     necessary to satisfy the Additional Loan and the GIT Mortgage in full as of
     the Closing Date will be $18,187,836.49.

          (W) Title.

               (a) Exhibit B accurately  depicts the ownership  interests of the
          LP Transferors  and the GP Transferor in McNab.  All of such ownership
          interests  are held  free and  clear of all  Liens  except  the  liens
          securing the  Additional  Loan.  McNab has been duly  formed,  validly
          existing  and is in good  standing  under  the  laws of its  state  of
          formation  and is in good  standing  and  duly  qualified  to  conduct
          business in any state in which such qualification is necessary.  McNab
          has no subsidiaries.


                                                                              23


               (b) McNab holds a valid title  insurance  policy ensuring its fee
          title to the Property free and clear of all Liens other than Permitted
          Exceptions,   and  Liens  which  have  been  discharged  or  otherwise
          terminated  (a true and correct copy of which title  insurance  policy
          has been delivered to the  Transferees),  and McNab has not, since its
          acquisition of the Property, done anything (other than the creation of
          Permitted   Exceptions  and  Liens  which  have  been   discharged  or
          terminated in full) to encumber its title to the Property.

          (X)  Employee  Benefit  Plans.  McNab  does not  maintain  or have any
     liability under any employee benefit plan.

          (Y) Development  Fee.  $912,381 is the entire amount  necessary to pay
     the Development Fee in full and no obligation other than such payment exist
     in respect of the services for which the Development Fee is payable.

          (Z) Affiliate Fee.  $353,864 is the entire amount necessary to pay the
     Affiliate Fee in full and no  obligations  other than such payment exist in
     respect of the work and/or services for which the Affiliate Fee is payable.

          (AA) GP Shareholders.  The LP Transferors are the sole shareholders of
     the GP Transferor.

     7.7  Regarding   Representations  and  Warranties.   At  the  Closing,  the
acknowledgments,  representations and warranties in Sections 7.1, 7.2, 7.3, 7.4,
7.5 and 7.6 shall be deemed to have been remade on and as of the  Closing  Date,
provided that each party hereto shall,  in the case of the  representations  and
warranties  set forth in  Sections  7.3,  7.4,  7.5 and 7.6,  have the option to
update the same so that they reflect facts and circumstances on a current basis.

     7.8  Conditions  to  Transferors'   Obligations.   The  obligation  of  the
Transferors to effect the Closing is conditioned on the following, except to the
extent waived by the Transferors:

          (a) All  representations  and warranties of  Transferees  set forth in
     this Agreement shall be true and correct in all material respects on and as
     of the Closing Date, as if made on and as of such date; and

          (b) The Transferees  shall have paid to Transferors the  consideration
     hereinabove provided for and fulfilled all of their other obligations under
     this Agreement.

     7.9  Conditions  to  Transferees'   Obligations.   The  obligation  of  the
Transferees to effect the Closing is conditioned on the following, except to the
extent waived by the Transferees:

          (a) The representations and warranties of the Transferors set forth in
     this Agreement shall be true and correct in all material respects on and as
     of the Closing Date as if made on and as of such date; subject,  however to
     changes resulting from the



                                                                              24


     operation of the  Property  between the date hereof and the Closing Date in
     accordance with Section 10.13.

          (b) The Transferors  shall have made the Closing  deliveries  required
     under the Agreement and shall have fulfilled in all material respects their
     other obligations under this Agreement; and

          (c) Title to the Property shall be subject to no liens or encumbrances
     other than Permitted Exceptions.

     7.10  Transferors  Default.  If at the Closing Date the  conditions  to the
obligations  of Transferees to close as set forth in Section 7.9 hereof have not
been fulfilled on account of the default of the Transferors  hereunder,  and the
Closing  shall  not occur as a result  thereof,  then the  Transferees  shall be
entitled to pursue, at their election, either of the following as their sole and
exclusive remedy: (i) terminate this Agreement or (ii) seek specific performance
of the Transferors'  obligations under this Agreement to consummate the Closing;
and, in each case, the Transferees shall be entitled to recover their reasonable
out-of-pocket costs (including without limitation reasonable attorneys' fees and
expenses) in exercising such remedy.  The Transferees  hereby waive any right to
sue the Transferors for damages  (including  consequential and punitive damages)
for any default  hereunder,  but if the Closing  occurs,  such waiver  shall not
apply to damages to which the Transferees may be entitled  hereunder (other than
consequential  punitive  damages) by reason of any breach by the  Transferors of
any of their  representations or warranties hereunder which survive the Closing.
The  provisions  of this  Section  7.10 shall  survive the  termination  of this
Agreement.

     7.11 Survival of Representations  and Warranties.  The  representations and
warranties made by the Partnership and Partnership Sub in Section 7.3 and by the
Transferors  in Sections  7.4.  7.5 and 7.6, as updated as of the Closing  Date,
shall  survive for one year after the Closing  Date;  provided,  however that no
claim for breach of any  representation or warranty in Sections 7.3, 7.4, 7.5 or
7.6  or  for  indemnification  under  Section  7.10  may  be  maintained  by the
Partnership,  Partnership  Sub,  or  the  Transferors  unless  the  Partnership,
Partnership Sub, or the Transferors,  as the case may be, shall have delivered a
written Notice  specifying in reasonable  detail such claim to the  Partnership,
Partnership  Sub, or the  Transferors,  as  applicable,  which  Notice  shall be
delivered for any representation or warranty in Sections 7.3, 7.4, 7.5 or 7.6 on
or before the first  anniversary  of the Closing Date (and, if such Notice is so
delivered,  such claim  shall  survive  until the  expiration  of the statute of
limitations  applicable  thereto).  Notwithstanding  anything  contained in this
section 7.11, the  representations  and warranties  contained in Sections 7.6(Y)
and 7.6(Z) shall survive forever.

     7.12 Indemnification.

          (A)  Subject  to the  limitations  set forth in  Section  7.13 and the
     provisions of Section 7.11, the  Partnership  shall  indemnify and hold the
     Transferors  and each member or shareholder  thereof (and their  respective
     officers,  directors  and  employees)  harmless from and against any claim,
     loss, damage, expense, cost (including



                                                                              25


     reasonable  attorney's  fees and  disbursements)  or  liability  (including
     liabilities  arising  by reason  of  damages  incurred  by a Party or other
     person) (collectively, "Losses") resulting from a breach by the Partnership
     of any representation, warranty or covenant contained in this Agreement.

          (B)  Subject  to the  limitations  set forth in  Section  7.13 and the
     provisions of Sections 7.10 and 7.11, the  Transferors  shall indemnify and
     hold the  Partnership and Partnership  Sub, and their  respective  members,
     officers, partners, directors and employees,  harmless from and against any
     Losses  resulting from a breach by the  Transferors,  or either of them, of
     any representation, warranty or covenant contained in this Agreement.

     7.13 Limitations on Indemnification.  The  indemnification  provided for in
Section 7.10 shall be subject to the following limitations:

          (A) In no event shall the aggregate liability of the Transferors under
     Section 7.12(B) with respect to their  representations and warranties under
     this Agreement (other than the  representations and warranties set forth in
     Section 7.6(G),  the last sentence of Section 7.6(U),  the last sentence of
     Section 7.6(V), Section 7.6(Y) and Section 7.6(Z)) exceed $800,000.

          (B)  Notwithstanding  anything to the contrary in this Agreement,  the
     Transferors shall not be liable for any Losses based on a breach or alleged
     breach of the representations and warranties contained in Sections 7.4, 7.5
     and 7.6 unless all Losses arising out of such breaches or alleged  breaches
     shall exceed $100,000 in the aggregate, and then only to the extent of such
     excess.

                                  ARTICLE VIII

                            Casualty and Condemnation

     8.1 Casualty.  If, prior to the Closing Date, the Property shall be damaged
by fire or any other casualty with an estimated  repair or restoration  costs in
excess of  $500,000,  the  Partnership  may by written  Notice  delivered to the
Transferors  on or before the Closing  Date,  elect either (i) to continue  this
Agreement in effect without abatement of the Consideration on account thereof or
(ii) to terminate this Agreement (in which event the  Partnership  shall have no
further  rights and  obligations  under this  Agreement  except for those  which
expressly survive such termination).

     8.2 Condemnation.

          (A) If, prior to the Closing,  condemnation proceedings are threatened
     in writing by an authorized  governmental  agency or commenced with respect
     to (i) five percent (5%) or more of the rentable area of the Property, (ii)
     so much  of the  parking  facilities  included  in the  Property  that  the
     remaining parking  facilities are legally  inadequate to serve the Property
     or (iii) so much of the Property  that access to the  remaining  portion of
     the Property is  materially  adversely  affected,  the  Partnership  may by



                                                                              26


     written Notice  delivered to the Transferors on or before the Closing Date,
     elect either (i) to continue this Agreement in effect without  abatement of
     the  Consideration  on account  thereof or (ii) to terminate this Agreement
     (in  which  event  the  Partnership   shall  have  no  further  rights  and
     obligations  under this Agreement except for those which expressly  survive
     such termination).

          (B) If a condemnation proceeding regarding any portion of the Property
     is threatened or commenced prior to the Closing Date, the Transferors shall
     promptly   advise  the  Partnership  of  such  event  and  shall  keep  the
     Partnership reasonably informed as to any such proceeding. Between the date
     hereof and the Closing Date,  the  Transferors  shall not (i) agree to make
     any conveyance in lieu of any such condemnation or (ii) make any conveyance
     in lieu of any such condemnation  without the  Partnership's  prior written
     consent.

                                   ARTICLE IX

                                     Broker

     9.1  Brokerage  Indemnity.  The  Transferors  represent  and warrant to the
Partnership that the Transferors have not dealt, and the Partnership  represents
and  warrants to the  Transferors  that neither it nor the  Partnership  Sub has
dealt, with any real estate broker, firm, salesperson or other similar person or
entity in connection with the transactions  contemplated by this Agreement.  The
Partnership  shall indemnify and hold the Transferors  harmless from and against
any  and  all  claims,  liabilities,  costs  and  expenses,  including,  without
limitation, reasonable attorneys' fees and disbursements, incurred in connection
with any claims made against the  Transferors  for  brokerage  commissions,  and
other fees or compensation made by any broker, firm, salesperson or other entity
with whom the Partnership  may have dealt in connection  with this  transaction.
The  Transferors  shall  indemnify  and hold the  Partnership  harmless from and
against any and all claims, liabilities,  costs and expenses, including, without
limitation, reasonable attorneys' fees and disbursements, incurred in connection
with any claims made against the  Partnership  for  brokerage  commissions,  and
other fees or compensation, made by any consultant, broker, firm, salesperson or
other person or entity with whom the  Transferors  may have dealt in  connection
with this  transaction.  The  provisions  of this  Article IX shall  survive the
Closing or the termination of this Agreement.

                                   ARTICLE X

                                  Miscellaneous

     10.1  Notices.  Notices must be in writing and sent to the party to whom or
to which such Notice is being sent,  by certified  or  registered  mail,  return
receipt requested with postage prepaid, or commercial overnight delivery service
or delivered by hand with receipt acknowledged in writing, as follows:


                                                                              27


          (A) To the Partnership:

              Berkshire Income Realty-OP, L.P.
              c/o The Berkshire Group
              One Beacon Street
              Boston, Massachusetts 02108
              Attention:  President

          (B) To Partnership Sub:

              BIR-OP McNab SUB, L.L.C.
              c/o The Berkshire Group
              One Beacon Street
              Boston, Massachusetts 02108
              Attention:  President

          (C) To Transferors:

              George Krupp
              c/o The Berkshire Group
              One Beacon Street
              Boston, Massachusetts 02108

              Douglas Krupp
              c/o The Berkshire Group
              One Beacon Street
              Boston, Massachusetts 02108

              Krupp GP, Inc.
              c/o The Berkshire Group
              One Beacon Street
              Boston, Massachusetts 02108
              Attention:  President

     All Notices (i) shall be deemed given when received,  and (ii) may be given
     either by a party or by such party's attorneys.  The cost of delivery shall
     be borne by the party delivering the Notice.

          10.2  Counterparts.  This  Agreement  may be  executed  in two or more
     counterparts,  each of which shall be deemed an original,  and all of which
     shall constitute a single instrument.

          10.3 Amendments.  Except as otherwise provided herein,  this Agreement
     may not be changed,  modified,  supplemented  or  terminated,  except by an
     instrument executed by the party hereto which is or will be affected by the
     terms of such change, modification, supplement or termination.



                                                                              28


          10.4  Waiver.  No waiver by any party hereto of any failure or refusal
     by any other party hereto to comply with its obligations hereunder shall be
     deemed a waiver of any other or subsequent failure or refusal to so comply.
     Any party  hereto may waive  compliance  by any other party with respect to
     any of the other's agreements or obligations set forth herein.

          10.5 Successors and Assigns.  This Agreement shall be binding upon and
     inure to the  benefit of the parties and their  respective  successors  and
     permitted  assigns.  No party may assign its interest  under this Agreement
     without  the  prior  written  consent  of all the  other  parties,  and any
     purported   assignment  in  violation   hereof  shall  be  null  and  void.
     Notwithstanding  the foregoing,  the parties  hereto  recognize that the GP
     Transferor may liquidate and that such liquidation shall be permitted. Upon
     such liquidation,  the shareholders of the GP Transferor will automatically
     succeed and be deemed to have assumed all the  obligations  and benefits of
     the GP Transferor under this Agreement.

          10.6 Third-Party  Beneficiaries.  The provisions of this Agreement are
     made for the benefit of the parties hereto, and their respective successors
     in interest and permitted assigns, and are not intended for, and may not be
     enforced by, any other person or entity.

          10.7 Partial Invalidity. If any term or provision of this Agreement or
     the application thereof to any person or circumstance shall, to any extent,
     be  invalid or  unenforceable,  the  remainder  of this  Agreement,  or the
     application  of such term or  provision to persons or  circumstances  other
     than those as to which it is held  invalid or  unenforceable,  shall not be
     affected  thereby and each term and  provision of this  Agreement  shall be
     valid and enforced to the fullest extent permitted by law.

          10.8 Governing Law. This Agreement has been made pursuant to and shall
     be governed by the laws of the State of New York.

          10.9  Headings;  Exhibits.  The  headings of the various  Articles and
     Sections  of this  Agreement  have been  inserted  solely for  purposes  of
     convenience,  are not part of this Agreement and shall not be deemed in any
     manner to modify, explain, expand or restrict any of the provisions of this
     Agreement. All references to Articles,  Sections or paragraphs herein shall
     be to the specified Article, Section or paragraph of this Agreement, unless
     stated to the  contrary,  and all  references  to Exhibits  shall be to the
     specified  Exhibit annexed hereto.  All Exhibits  annexed hereto are made a
     part hereof.  All terms defined  herein shall have the same meanings in the
     Exhibits,  except as otherwise  provided  therein.  All  references in this
     Agreement shall be deemed to include the Exhibits.

          10.10 Binding  Effect.  This document does not  constitute an offer to
     sell and shall not bind the Transferors  unless and until the  Transferors,
     in the Transferors' sole discretion, elects to be bound hereby by executing
     and  unconditionally  delivering to the  Partnership and Partnership Sub an
     executed original counterpart hereof.


                                                                              29


          10.11 Casualty Insurance  Coverage.  The Transferors shall cause to be
     kept in full force and effect all casualty  insurance coverage currently in
     effect with respect to the Property until the Closing.

          10.12  Other  Agreements.  The  Transferors  shall  not,  without  the
     Partnership's   prior   written   consent,   which  consent  shall  not  be
     unreasonably withheld,  alter or amend the McNab Partnership Agreement. The
     Transferors  shall not,  without the  Partnership's  prior written consent,
     alter or amend the Mortgage,  the GIT  Mortgage,  the note  evidencing  the
     Additional Loan or any document relating to any of the foregoing.

          10.13  Conduct of Business.  From the date hereof  through the Closing
     Date, the  Transferors (i) shall cause the Property to be maintained in the
     ordinary  course of business  consistent  with past  practices;(  provided,
     however,  that  nothing  contained  in this  Section  shall be construed as
     requiring  the  Transferors  to undertake or cause to be  undertaken  major
     repair or improvement in respect of the Property) and (ii) shall not permit
     McNab to incur any contractual obligations or liabilities other than in the
     ordinary course of McNab's business.





                                                                              30




          IN WITNESS  WHEREOF,  this  Agreement  has been duly  executed  by the
     parties hereto as of the day and year first above written.




                                         TRANSFERORS:




                                          /s/ Douglas Krupp
                                         ---------------------------------------
                                         Name: Douglas Krupp


                                          /s/ George D. Krupp
                                         ---------------------------------------
                                         Name: George D. Krupp



                                         KRUPP GP, INC.


                                         By:    /s/ David C. Quade
                                                --------------------------------
                                         Name:  David C. Quade
                                         Title: Executive Vice President






                                         PARTNERSHIP:


                                         BERKSHIRE INCOME REALTY-OP, L.P.


                                         By: BIR GP, L.L.C., its general partner

                                         By: Berkshire Income Realty, Inc.,
                                             its sole member


                                         By:    /s/ David C. Quade
                                                --------------------------------
                                         Name:  David C. Quade
                                         Title: President


                                         PARTNERSHIP SUB


                                         BIR-OP MCNAB SUB, L.L.C.


                                         By: Berkshire Income Realty-OP, L.P.,
                                             its sole member

                                         By: BIR GP, L.L.C., its general partner

                                         By: Berkshire Income Realty, Inc.,
                                             its sole member


                                         By:    /s/ David C. Quade
                                                --------------------------------
                                         Name:  David C. Quade
                                         Title: President










                         CONTRIBUTION AND SALE AGREEMENT

                                      AMONG



                                  GEORGE KRUPP;

                                 DOUGLAS KRUPP;

                                 KRUPP GP, INC.,

                          a Massachusetts corporation;



                        BERKSHIRE INCOME REALTY-OP, L.P.,

                         a Delaware limited partnership;

                                       and



                            BIR-OP MCNAB SUB, L.L.C.

                      a Delaware limited liability company




       For Transfer of the general and limited partnership interests in:

                  McNab - K C 3 Limited Partnership



                               As of May 29, 2003







                                       iii

                                TABLE OF CONTENTS

                                                                            Page


  ARTICLE I           Definitions..............................................2
         1.1          Definitions..............................................2
         1.2          References...............................................6
         1.3          Gender and Number........................................6

  ARTICLE II          Contribution and Purchase and Sale.......................6
         2.1          Covenant.................................................6
         2.2          "As Is"..................................................7

  ARTICLE III         Consideration............................................7
         3.1          Consideration............................................7
         3.2          Assumption of Obligations................................7

  ARTICLE IV          Closing Date.............................................8

  ARTICLE V           Apportionments and Payments..............................8
         5.1          Items to Be Apportioned..................................8
         5.2          Credits..................................................9
         5.3          Re-Proration of Impositions..............................9
         5.4          Utilities................................................9
         5.5          Rent Arrearages.........................................10
         5.6          Security Deposits.......................................10
         5.7          Reserves and Deposits...................................10
         5.8          Settlement of Adjustments...............................10
         5.9          Inspection of Books and Records.........................11
         5.10         Schedule of Rent Arrearages.............................11
         5.11         Survival................................................11

  ARTICLE VI          Closing Documents.......................................11
         6.1          LP Transferors Closing Documents........................11
         6.2          GP Transferor Closing Documents.........................12
         6.3          Partnership Closing Documents...........................13
         6.4          Partnership Sub Closing Documents.......................14
         6.5          Further Assurances......................................14

  ARTICLE VII         Representations and Warranties; Conditions to Closing...14
         7.1          Investment Representations..............................14
         7.2          Partnership and Partnership Sub Acknowledgments.........15
         7.3          Partnership and Partnership Sub Representations and
                      Warranties..............................................16
         7.4          LP Transferors' Representations and Warranties..........17
         7.5          GP Transferor Representations and Warranties............17
         7.6          Transferors' Joint Representations and Warranties.......18





         7.7          Regarding Representations and Warranties................23
         7.8          Conditions to Transferors' Obligations..................23
         7.9          Conditions to Transferees' Obligations..................23
         7.10         Transferors Default.....................................24
         7.11         Survival of Representations and Warranties..............24
         7.12         Indemnification.........................................24
         7.13         Limitations on Indemnification..........................25

  ARTICLE VIII        Casualty and Condemnation...............................25
         8.1          Casualty................................................25
         8.2          Condemnation............................................25

  ARTICLE IX          Broker..................................................26
         9.1          Brokerage Indemnity.....................................26

  ARTICLE X           Miscellaneous...........................................26
         10.1         Notices.................................................26
         10.2         Counterparts............................................27
         10.3         Amendments..............................................27
         10.4         Waiver..................................................28
         10.5         Successors and Assigns..................................28
         10.6         Third-Party Beneficiaries...............................28
         10.7         Partial Invalidity......................................28
         10.8         Governing Law...........................................28
         10.9         Headings; Exhibits......................................28
         10.10        Binding Effect..........................................28
         10.11        Casualty Insurance Coverage.............................29
         10.12        Other Agreements........................................29
         10.13        Conduct of Business.....................................29







EXHIBITS

A - Description of Property
B - Description of the Ownership Structure of the Property
C - Schedule of Contracts
D - Schedule of Leases
E - Schedule of Mortgage
F - Schedule of Rent Arrearages
G - Schedule of Litigation
H - Security Deposits
I - Violations
J - Liabilities and Obligations
K - Employees
L - Claims by Employees (threatened or asserted in writing)
M - Federal, State and Local Taxes Due
N - Tax Certiorari or Audit Proceedings