SECOND MASTER AMENDMENT TO PURCHASE AND SALE AGREEMENTS

     This Second Master  Amendment to Purchase and Sale  Agreements (the "Second
Master Amendment") is hereby entered into as of the 5th day of October,  2001 by
and among PAVILLION PARTNERS, LTD. ("Pavillion"),  TANGLEWOOD ASSOCIATES LIMITED
PARTNERSHIP ("Tanglewood") and WINDSOR PARTNERS LIMITED PARTNERSHIP ("Windsor"),
each a  Texas  limited  partnership,  having  an  office  c/o  Berkshire  Realty
Holdings,  L.P., 5720 LBJ Freeway, Suite 480, Dallas, TX 76240, Attention:  Eric
A. Calub, Telecopier No. 972-991-4557  (Pavillion,  Tanglewood and Windsor being
referred to herein,  collectively,  as the  "Seller"),  and THE  LARAMAR  GROUP,
L.L.C.,  an  Illinois  limited  liability  company  (formerly  known  as  Alexon
Ventures, L.L.C., an Illinois limited liability company), with an address of 222
South Riverside Plaza, Suite 1450, Chicago, Illinois 60606, Attention:  David B.
Levin, Telecopier No. 312-669-1300 (the "Buyer").

     REFERENCE is made to three certain  Purchase and Sale Agreements each dated
as of August 27, 2001,  one by and between  Pavillion  and Buyer with respect to
the Pavillion  Apartments  located at 2922 Belt Line Road,  Garland,  Texas (the
"Pavillion Property") (the "Pavillion Agreement"), one by and between Tanglewood
and Buyer with respect to the  Tanglewood  Apartments  located at 2804 Belt Line
Road, Garland, Texas (the "Tanglewood  Property") (the "Tanglewood  Agreement"),
and one by and between Windsor and Buyer with respect to the Windsor  Apartments
located at 2811 North Shiloh Road, Garland,  Texas (the "Windsor Property") (the
"Windsor  Agreement").  The Pavillion Property,  the Tanglewood Property and the
Windsor Property are referred to herein, collectively, as the "Properties".  The
Pavillion Agreement, the Tanglewood Agreement and the Windsor Agreement, each as
amended by that certain Master  Amendment to Purchase and Sale  Agreements  (the
"Master  Amendment")  dated as of September  28,  2001,  are referred to herein,
collectively, as the "Agreements".

     WHEREAS, capitalized terms used herein and not otherwise defined shall have
the meanings set forth in the Agreements; and

     WHEREAS,  Seller and Buyer have  agreed to modify  certain of the terms and
provisions of the Agreements as provided in this Second Master Amendment.

     NOW THEREFORE,  in consideration of the mutual agreements  contained herein
and other good and valuable consideration,  the receipt and sufficiency of which
is hereby acknowledged, Seller and Buyer hereby agree as follows.

     1. Extension of Financing Deadline.  The Financing Deadline as set forth in
the Master Amendment is hereby extended to 5:00 p.m. on October 9, 2001.

     2.  Lapse  of  Certain  Inspection  Period  Deadlines.   Buyer  and  Seller
acknowledge that each of the Foundation  Violation  Deadline,  the Title Matters
Deadline and the Prior Survey  Matters  Deadline has lapsed and,  except for the
Seller's failure to satisfy the conditions as hereinafter  provided on or before
Closing  with  respect  to (i) the  outstanding  municipal  ordinance  violation
relative to the building  foundation of the Pavillion  Property (the "Foundation




Violation"), and (ii) items 9 j, p and t (the "Cable Matters") and items 9 k and
q (the  "Alarm/Laundry  Matters") of Schedule B to that certain  Commitment  for
Title  Insurance GF No.  LTIC-01-2846  (Revision No. 0) issued by Lawyer's Title
Insurance  Corporation,  Buyer has waived  and shall  have no  further  right to
terminate the Agreements pursuant to the Foundation Violation, the Cable Matters
and the Alarm/Laundry Matters and the Prior Survey Matters.

     2.  Additional  Seller's  Closing  Obligations.  Section 9.1 of each of the
Agreements  is hereby  amended by adding  the  following  provisions  to the end
thereof:

     (n)  Evidence  that  the  Foundation  Violation  has  been  cured  to  the
satisfaction  of the office of the  building  inspector  of the City of Garland,
Texas, such that no violation of record exists at Closing.

     (o) Affidavits reasonably required by the Title Insurer to delete the Cable
Matters as exceptions to Buyer's Title Policy.

     (p) Affidavits and indemnities  reasonably required by the Title Insurer to
delete the Alarm/Laundry Matters as exceptions to Buyer's Title Policy."

     3.  Counterparts,  Etc. This Second Master Amendment shall not be effective
unless and until execution and delivery  thereof by both Seller and Buyer.  This
Second Master Amendment may be executed in counterparts,  each of which shall be
an  original  and all of  which,  when  taken  together,  shall  constitute  one
Agreement.  Executed copies of this Second Master  Amendment may be delivered by
facsimile.

     4.  Ratification.  In all other respects,  Seller and Buyer hereby reaffirm
all of the covenants, agreements, terms, conditions, and other provisions of the
Agreements except as modified hereby, and the Agreements are hereby incorporated
in full herein by reference.

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     IN WITNESS  WHEREOF,  Seller and Buyer have  executed  this  Second  Master
Amendment as a sealed instrument as of the date first written above.


                             SELLER:
WITNESS:

                             PAVILLION PARTNERS, LTD., a Texas limited
                             partnership

                             By:      Westcop Corporation, a Texas
                                      corporation, its General Partner

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



WITNESS:

                             TANGLEWOOD ASSOCIATES LIMITED
                             PARTNERSHIP, a Texas limited partnership

                             By:      The Krupp Company Limited Partnership-III,
                                      Massachusetts limited partnership, its
                                      General Partner

                                      By:      The Krupp Corporation, a
                                               Massachusetts corporation, its
                                               General Partner

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








WITNESS:

                             WINDSOR PARTNERS LIMITED PARTNERSHIP, a
                             Texas limited partnership

                             By:      ST Windsor Corporation, a Texas
                                      corporation, its General Partner

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



                             BUYER:

WITNESS:
                             THE LARAMAR  GROUP,  L.L.C.,  an  Illinois  limited
                             liability company (formerly known as Alexon
                             Ventures,  L.L.C.,  an  Illinois  limited
                             liability company)

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