MCNEIL REAL ESTATE FUND XI LTD
SC 13D/A, 1999-12-14
OPERATORS OF NONRESIDENTIAL BUILDINGS
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 14)*

                        McNeil Real Estate Fund XI, Ltd.
                                (Name of Issuer)

                            Limited Partnership Units
                         (Title of Class of Securities)

                                   582568 30 9
                                 (CUSIP Number)

                            Keith L. Schaitkin, Esq.
                     Gordon Altman Weitzen Shalov & Wein LLP
                        114 West 47th Street, 20th Floor
                            New York, New York 10036
                                 (212) 626-0800

           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                December 7, 1999
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of Sections 240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check
the following box //.

NOTE:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to whom copies are to be sent.

*The  remainder  of  this  cover  page  shall  be  filled  out  for a  reporting
person'sinitial  filing  on this  form  with  respect  to the  subject  class of
securities,  andfor any subsequent amendment containing  information which would
alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


<PAGE>




                                  SCHEDULE 13D

CUSIP No. 582568 30 9


1        NAME OF REPORTING PERSON
                  High River Limited Partnership

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) / /
                                                                    (b) /x/ (1)

3        SEC USE ONLY

4        SOURCE OF FUNDS*
                  WC

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                             //

6        CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON
WITH:

7        SOLE VOTING POWER
                  16,418.67 Units (2)

8        SHARED VOTING POWER
                  0

9        SOLE DISPOSITIVE POWER
                  16,418.67 Units (2)

10       SHARED DISPOSITIVE POWER
                  0

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  16,418.67 Units (2)

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES*                                                    //

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  10.27%

14       TYPE OF REPORTING PERSON*
                  PN
- ---------------
(1) See disclaimer in Item 5 below.
(2) As  described  in Item 4 below  under  the  caption  Voting  and  Standstill
Agreement,  the Reporting  Persons have entered into certain voting  agreements,
and granted a proxy to certain officers of McNeil Investors,  Inc., with respect
to these units.


<PAGE>




                                  SCHEDULE 13D

CUSIP No. 582568 30 9


1        NAME OF REPORTING PERSON
                  Riverdale LLC

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) / /
                                                                    (b) /x/ (1)

3        SEC USE ONLY

4        SOURCE OF FUNDS*
                  AF

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                             //

6        CITIZENSHIP OR PLACE OF ORGANIZATION
                  New York

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
                  0

8        SHARED VOTING POWER
                  16,418.67 Units (2)

9        SOLE DISPOSITIVE POWER
                  0

10       SHARED DISPOSITIVE POWER
                  16,418.67 Units (2)

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  16,418.67 Units (2)

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES*                                                    //

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  10.27%

14       TYPE OF REPORTING PERSON*
                  OO
- ---------------
(1) See disclaimer in Item 5 below.
(2) As  described  in Item 4 below  under  the  caption  Voting  and  Standstill
Agreement,  the Reporting  Persons have entered into certain voting  agreements,
and granted a proxy to certain officers of McNeil Investors,  Inc., with respect
to these units.


<PAGE>




                                  SCHEDULE 13D

CUSIP No. 582568 30 9


1        NAME OF REPORTING PERSON
                  Carl C. Icahn

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) / /
                                                                    (b) /x/ (1)
3        SEC USE ONLY

4        SOURCE OF FUNDS*
                  AF

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                             //

6        CITIZENSHIP OR PLACE OF ORGANIZATION
                  United States of America

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
                  0

8        SHARED VOTING POWER
                  18,621.67 Units (2)

9        SOLE DISPOSITIVE POWER
                  0

10       SHARED DISPOSITIVE POWER
                  18,621.67 Units (2)

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  18,621.67 Units (2)

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES*                                                    //

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  11.65%

14       TYPE OF REPORTING PERSON*
                  IN
- ---------------
(1) See disclaimer in Item 5 below.
(2) As  described  in Item 4 below  under  the  caption  Voting  and  Standstill
Agreement,  the Reporting  Persons have entered into certain voting  agreements,
and granted a proxy to certain officers of McNeil Investors,  Inc., with respect
to these units.


<PAGE>




                                  SCHEDULE 13D

CUSIP No. 582568 30 9


1        NAME OF REPORTING PERSON
                  Unicorn Associates Corporation

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                    (a) / /
                                                                    (b) /x/ (1)

3        SEC USE ONLY

4        SOURCE OF FUNDS*
                  AF

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) or 2(e)                             //

6        CITIZENSHIP OR PLACE OF ORGANIZATION
                  New York

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
                  2,203 Units (2)

8        SHARED VOTING POWER
                  0

9        SOLE DISPOSITIVE POWER
                  2,203 Units (2)

10       SHARED DISPOSITIVE POWER
                  0

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  2,203 Units (2)

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES*                                                    //

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  1.38%

14       TYPE OF REPORTING PERSON*
                  CO
- ---------------
(1) See disclaimer in Item 5 below.
(2) As  described  in Item 4 below  under  the  caption  Voting  and  Standstill
Agreement,  the Reporting  Persons have entered into certain voting  agreements,
and granted a proxy to certain officers of McNeil Investors,  Inc., with respect
to these units.


<PAGE>




                        AMENDMENT NO. 13 TO SCHEDULE 13D

         This  statement  ("Statement")  constitutes  Amendment  No.  13 to  the
Schedule  13D  filed  with  the   Securities   and  Exchange   Commission   (the
"Commission")  on November 13, 1995, as amended to date (the "Initial  Filing").
Unless otherwise  indicated  capitalized terms used herein but not defined shall
have the meanings ascribed to them in the Initial Filing.

         This  Statement  hereby  amends  the  items  identified  below,  or the
particular paragraphs of such items which are identified below.

Item 4.           Purpose of Transaction

         Item 4 is hereby amended to add the following:

         On December 7, 1999,  High River Limited  Partnership  ("High  River"),
Riverdale  LLC  ("Riverdale"),  Carl C. Icahn ("Mr.  Icahn") and Longacre  Corp.
("Longacre"  and together with High River,  Riverdale and Mr. Icahn,  the "Icahn
Parties") entered into a settlement agreement (the "Settlement Agreement") and a
voting  agreement  (the  "Voting  and  Standstill  Agreement")  with the  McNeil
Partnerships (as defined below), McNeil Partners,  L.P. (the "General Partner"),
McNeil Investors, Inc. ("McNeil Investors"), McNeil Real Estate Management, Inc.
("McREMI"),  Robert A.  McNeil and Carole J. McNeil  (collectively,  the "McNeil
Parties"),  in connection  with the  settlement  of  litigation  brought by High
River,  Unicorn and  Longacre  against the General  Partner,  McNeil  Investors,
McREMI, Robert A. McNeil and Carole J. McNeil.

         As used herein, "McNeil Partnerships" means McNeil Real Estate Fund IX,
Ltd.,  McNeil Real Estate Fund X, Ltd., McNeil Real Estate Fund XI, Ltd., McNeil
Real Estate Fund XII,  Ltd.,  McNeil  Real  Estate Fund XIV,  Ltd.,  McNeil Real
Estate Fund XV, Ltd.,  McNeil Real Estate Fund XX, L.P., McNeil Real Estate Fund
XXI, L.P.,  McNeil Real Estate Fund XXII,  L.P.,  McNeil Real Estate Fund XXIII,
L.P.,  McNeil Real Estate Fund XXIV,  L.P.,  McNeil Real Estate Fund XXV,  L.P.,
McNeil Real Estate Fund XXVI, L.P., McNeil Real Estate Fund XXVII,  L.P., Hearth
Hollow  Associates,  L.P.,  McNeil  Midwest  Properties  I, L.P.,  Regency North
Associates, L.P., Fairfax Associates II, Ltd. and McNeil Summerhill I, L.P.

         Settlement Agreement

         The Settlement  Agreement  settles and disposes of all claims,  demands
and  causes of action  existing  as of  December  7,  1999 and  arising  out of,
connected  with  or  incidental  to the  dealings  between  the  parties  to the
Settlement  Agreement,  including  all  claims,  demands  and  causes  of action
reflected in the action  Schofield et al. v. McNeil  Partners,  L.P. et al. (the
"Schofield  litigation") or the action High River Limited  Partnership et al. v.
McNeil Partners, L.P. et al. (the "High River litigation"), as well as all prior
disputes  arising  out of events in the years  preceding  and  leading up to the
execution of the Master Agreement (the "Master  Agreement") entered into on June
24, 1999 among the McNeil Partnerships,  the General Partner,  McNeil Investors,
McREMI, McNeil Summerhill,  Inc., Robert A. McNeil and WXI/McN Realty L.L.C., an
affiliate  of  Whitehall  Street Real Estate  Limited  Partnership  XI ("WXI/McN
Realty").  The Master  Agreement  was filed as an  Exhibit to the  Partnership's
Current  Report on Form 8-K,  dated  June 29,  1999.  The  Schofield  litigation
referred to above is described in


<PAGE>



more detail in Section 8 of the Offer to Purchase  included as an Exhibit to the
Schedule  14D-1  Tender  Offer  Statement  filed by High River and Mr.  Icahn on
September  20, 1996.  The High River  litigation  is an action filed on July 23,
1999 by High River,  Unicorn and  Longacre in the Supreme  Court of the State of
New York,  New York  County,  against the  General  Partner,  McNeil  Investors,
McRemi, Robert A. McNeil and Carole J. McNeil alleging, among other things, that
the defendants  improperly  interfered with tender offers made by High River for
limited partner units in the Partnership and improperly excluded High River from
participating  in the auction  process for the sale of the McNeil  Partnerships.
The High River litigation also contains allegations against the defendants based
upon the  plaintiffs'  status as opt-outs  from the  settlement of the Schofield
Litigation.  On July 30, 1999 defendants filed an answer to the complaint in the
High River  litigation  denying the material  allegations  in the  complaint and
asserting several affirmative defenses. Other than as described below, the terms
of the Settlement Agreement are subject to a confidentiality agreement among the
McNeil Parties and the Icahn Parties.

         On December 7, 1999,  concurrently with the execution of the Settlement
Agreement, the Icahn Parties dismissed,  with prejudice, as to all parties, with
each party bearing its own costs and attorneys'  fees, the High River litigation
as  well  as any  appeal  of the  Final  Order  and  Judgment  in the  Schofield
litigation.

         In  consideration  of, among other  things,  the  dismissal of the High
River litigation and any appeal of the Final Order and Judgment in the Schofield
litigation, the mutual general releases and covenant not to sue described below,
McNeil Partners, McREMI, McNeil Investors, Robert A. McNeil and Carole J. McNeil
will  make a cash  settlement  payment  to  High  River  at the  closing  of the
transactions contemplated by the Master Agreement,  provided that the Settlement
Agreement has not been terminated.

         The McNeil  Partnerships  and their  subsidiaries  have no liability or
obligation with respect to the settlement  payment.  Moreover,  Robert A. McNeil
and Carole J. McNeil have agreed that  notwithstanding that they may be entitled
to  indemnification  pursuant  to  the  provisions  of the  limited  partnership
agreements   governing  the  McNeil   Partnerships,   neither  they,  nor  their
affiliates,  will seek or accept from any McNeil Partnership,  or any subsidiary
corporation  or  subsidiary  partnership  of a McNeil  Partnership,  payment  or
reimbursement of any portion of the settlement payment or related legal fees.

         The Settlement  Agreement  provides for mutual general  releases by the
Icahn Parties, on the one hand, and by the McNeil Parties and WXI/McN Realty, on
the other  hand.  Each of the Icahn  Parties,  on the one hand,  and each of the
McNeil  Parties and WXI/McN  Realty,  on the other hand,  also has agreed not to
initiate, file or pursue any action, claim, suit or proceeding against the other
that  concerns  any of the matters  which are the subject of the  releases.  The
releases  and  covenant  not to sue also apply to the  respective  predecessors,
successors,  present  and former  affiliates,  subsidiaries,  parents,  assigns,
officers,  directors,  equity holders, partners,  members,  controlling persons,
employees,  attorneys,  financial advisors, investment bankers and agents of the
Icahn Parties, the McNeil Parties and, with some exceptions, WXI/McN Realty.



<PAGE>



         The Settlement  Agreement  terminates in its entirety on the date which
is the earliest to occur of (1) June 30, 2000, if the closing of the transaction
contemplated  by the Master  Agreement  has not occurred on or prior to June 30,
2000; (2) the termination of the Master  Agreement in its entirety;  and (3) the
termination  of the Master  Agreement  with  respect  to the last  participating
McNeil Partnership.

         The  Settlement  Agreement does not constitute an admission of damages,
wrongdoing or liability by any party.

         Voting and Standstill Agreement

         On December 7, 1999,  in  consideration  of the McNeil  Parties and the
Icahn Parties  executing and  delivering the  Settlement  Agreement,  the McNeil
Parties and the Icahn Parties also entered into a Voting  Agreement (the "Voting
and  Standstill   Agreement")   with  respect  to  the  limited   partner  units
beneficially owned by the Icahn Parties in the McNeil Partnerships.

         Mr.  Icahn and his  affiliates  agreed  in the  Voting  and  Standstill
Agreement to vote all of the limited partner units  beneficially  owned and held
of  record  by them  in any of the  McNeil  Partnerships  (and  granted  certain
officers of McNeil  Investors an irrevocable  proxy to vote such limited partner
units)  for the merger of such  McNeil  Partnership  contemplated  by the Master
Agreement  and for certain  other  related  matters  with respect to such McNeil
Partnerships.  Mr.  Icahn  and his  affiliates  also  agreed in the  Voting  and
Standstill  Agreement  to direct the  holders of record of any  limited  partner
units  beneficially  owned by them but not held of  record by them in any of the
McNeil  Partnerships  to vote those limited partner units for the merger of such
McNeil  Partnership  contemplated by the Master  Agreement and for certain other
related matters with respect to such McNeil Partnership.

         The  Voting  and  Standstill   Agreement  also  includes  a  standstill
provision and a no  solicitation  provision  pursuant to which each of the Icahn
Parties, its affiliates and its subsidiaries have agreed to certain restrictions
on their actions with respect to the McNeil  Partnerships  and related  parties.
The standstill provision and no solicitation provision  automatically  terminate
with  respect  to all of the  McNeil  Partnerships  on  December  7,  2002,  and
terminate  with respect to particular  McNeil  Partnerships  under certain other
circumstances,  including (1) automatic  termination if that McNeil  Partnership
becomes an "excluded McNeil Partnership"  pursuant to the Master Agreement;  and
(2) in the case of any of McNeil Partnerships IX, X, XI, XIV, XV, XX, XXIV, XXV,
XXVI and XXVII,  termination  at the option of the Icahn Parties if the per unit
aggregate  amount  payable or  estimated  to be payable  with respect to limited
partner units in that McNeil Partnership is reduced below a specified amount.

         The Voting and Standstill  Agreement  terminates in its entirety on the
date which is the earliest to occur of (1) June 30, 2000,  if the closing of the
transaction contemplated by the Master Agreement has not occurred on or prior to
June 30, 2000; (2) the termination of the Master Agreement in its entirety;  and
(3)  the  termination  of  the  Master   Agreement  with  respect  to  the  last
participating McNeil Partnership.

         The foregoing description of the Voting and Standstill Agreement is a
summary only and is qualified in its entirety by


<PAGE>



reference to the Voting and Standstill  Agreement,  which is filed as an exhibit
hereto and which is incorporated by reference herein.

Item 5.           Interest in Securities of the Issuer.

         Paragraphs  (a) - (b) of this Item are hereby  amended to read in their
entirety as follows:

         (a) -  (b)  The  18,621.67  Units  which  are  listed  above  as  being
beneficially  owned by the Reporting Persons consist of 16,418.67 Units directly
beneficially owned by High River and 2,203 Units directly  beneficially owned by
Unicorn.   Such  Units  represent   approximately   11.65%,  10.27%  and  1.38%,
respectively, of the outstanding Units, based upon the Partnership's most recent
Form 10-Q.  Carl C. Icahn is the  controlling  member of Riverdale  (the general
partner of High River) and  indirectly  beneficially  owns all of the issued and
outstanding   shares  of  capital  stock  of  Unicorn.   Mr.  Icahn   indirectly
beneficially owns all of the Units directly beneficially owned by High River and
Unicorn.  Riverdale  indirectly  beneficially  owns  all of the  Units  directly
beneficially owned by High River.

Neither  the  filing  of this  Amendment  nor its  contents  shall be  deemed an
admission  that the  Reporting  Persons  are part of a "group"  with the  McNeil
Parties  (as  defined  in Item 4) as a result of  entering  into the  Settlement
Agreement  or the  Voting  and  Standstill  Agreement  described  in Item 4. The
Reporting  Persons  expressly  disclaim  formation  of a "group" with the McNeil
Parties and expressly  disclaim  beneficial  ownership of any Units owned by the
McNeil Parties.

Item 6.           Contracts, Arrangements, Understandings or Relationships
                  With Respect to Securities of the Issuer

                  Item 6 is hereby amended to add the following:

                  The  disclosure  set  forth  under  Item  4  above  is  hereby
incorporated herein by reference.

Item 7.           Material to be filed as Exhibits

Exhibit 1                      Voting Agreement, dated as of December 7, 1999
                               by and among McNeil Partners, L.P., a Delaware
                               limited partnership in its own capacity and on
                               behalf of each of the McNeil Partnerships
                               (other than Regency North Associates, L.P.,
                               Fairfax Associates II, Ltd., and McNeil
                               Summerhill I, L.P.), Regency North Associates,
                               L.P., Fairfax Associates II, Ltd., McNeil
                               Summerhill I, L.P., McNeil Real Estate
                               Management, Inc., a Delaware corporation,
                               McNeil Investors, Inc., a Delaware
                               corporation, Robert A. McNeil, Carole J.
                               McNeil, High River Limited Partnership, a
                               Delaware limited partnership, Riverdale LLC, a
                               New York limited liability company, Unicorn
                               Associates Corporation, a New York
                               corporation, Longacre Corp., a Delaware
                               corporation, and Carl C. Icahn.




<PAGE>



                                   SIGNATURES

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statements is true,  complete and
correct.

Dated:   December 9, 1999

                                                HIGH RIVER LIMITED PARTNERSHIP

                                                By:      Riverdale LLC
                                                         its General Partner

                                                By:      /s/ Edward Mattner
                                                         Edward Mattner
                                                Title:            Manager

                                                RIVERDALE LLC

                                                By:      /s/ Edward Mattner
                                                         Edward Mattner
                                                Title:            Manager


                                                UNICORN ASSOCIATES CORPORATION

                                                By:      /s/ Edward Mattner
                                                         Edward Mattner
                                                Title:       President


                                                         /s/ Theodore Altman
                                                         Carl C. Icahn
                                                By:      Theodore Altman as
                                                         Attorney-in-fact



         [Signature Page for Amendment No. 14 to McNeil Real Estate Fund
                             XI, Ltd. Schedule 13D]






                                VOTING AGREEMENT

                  VOTING AGREEMENT (this  "Agreement"),  dated as of December 7,
1999,  by and among  McNeil  Partners,  L.P.,  a  Delaware  limited  partnership
("MPLP") in its own  capacity  and on behalf of each of the McNeil  Partnerships
(other than Regency North  Associates,  L.P.,  Fairfax  Associates  II, Ltd. and
McNeil Summerhill I, L.P.), Regency North Associates, L.P. ("Regency"),  Fairfax
Associates  II, Ltd.  ("Fairfax"),  McNeil  Summerhill  I, L.P.  ("Summerhill"),
McNeil Real Estate Management,  Inc., a Delaware corporation ("McREMI"),  McNeil
Investors,  Inc.,  a Delaware  corporation  ("MII"),  Robert A. McNeil  ("RAM"),
Carole J. McNeil  ("CJM" and,  together  with RAM,  the  "McNeils"),  High River
Limited  Partnership,  a Delaware limited partnership ("High River"),  Riverdale
LLC, a New York limited  liability  company  ("Riverdale"),  Unicorn  Associates
Corporation,  a New York  corporation  ("Unicorn"),  Longacre  Corp., a Delaware
corporation  ("Longacre"),  and Carl C. Icahn  ("CCI"  and,  together  with High
River,  Riverdale,   Unicorn  and  Longacre,  the  "Securityholders"  and,  each
individually, a "Securityholder").  (MPLP, the McNeil Partnerships,  McREMI, MII
and the McNeils are hereinafter collectively referred to as the "McNeil Parties"
and, each individually, as a "McNeil Party.")


                              W I T N E S S E T H:

                  WHEREAS, on July 8, 1999, a Final Order and Judgment was
entered, pursuant to a settlement, in the consolidated class and derivative
action entitled, Schofield, et al. v. McNeil Partners, L.P., et al., Case No.
BC133799 (hereinafter, the "Class Action");

                  WHEREAS,  the  Securityholders  opted out of the Class  Action
settlement  and on July 23, 1999 filed a separate  action  entitled,  High River
Limited  Partnership,  et al.  v.  McNeil  Partners,  L.P.,  et al.,  Index  No.
99-603526,  in the Supreme  Court of the State of New York,  County of New York,
alleging their individual claims  (hereinafter,  the "Individual Action") and as
of the date hereof, the Individual Action is pending in the Supreme Court of the
State of New York, County of New York;

                  WHEREAS,  contemporaneously with the execution and delivery of
this  Agreement,  the  Securityholders  and the McNeil  Parties are settling the
Individ ual Action by entering  into a  Settlement  Agreement  (the  "Settlement
Agreement");

                  WHEREAS, WXI/McN Realty, L.L.C. (the "Company"), the McNeil
Partnerships, MPLP, MII, McREMI, McNeil Summerhill, Inc. and RAM have

                                        1

<PAGE>



entered into a Master  Agreement,  dated as of June 24, 1999 (as the same may be
amended from time to time,  the "Master  Agreement"),  pursuant to which the Com
pany will acquire the McNeil  Partnerships and the assets of McREMI on the terms
and subject to the conditions set forth in the Master Agreement.

                  NOW,  THEREFORE,  in consideration of the  Securityholders and
the McNeil Parties  executing and delivering  the Settlement  Agreement,  and in
consider ation of the foregoing and the representations,  warranties,  covenants
and agreements set forth below,  the parties to this Agreement,  intending to be
legally bound hereby, agree as follows:


                                    ARTICLE I

                               CERTAIN DEFINITIONS

                  Section 1.1  Definitions.  For purposes of this Agreement, the
following terms shall have the following meanings:

                  "Affiliate"  of any Person  shall  mean  another  Person  that
directly or indirectly  controls,  is controlled  by, or is under common control
with,  such first Person,  where  "control"  means the  possession,  directly or
indirectly,  of the power to direct or cause the direction of the management and
policies of a Person,  whether  through the ownership of voting  securities,  by
written or verbal agreement, as trustee or executor, or otherwise.

                  "Beneficially  Own" or "Beneficial  Ownership" with respect to
any securities shall mean having  "beneficial  ownership" of such securities (as
determined pursuant to Rule 13d-3 under the Exchange Act), including pursuant to
any agree ment, arrangement or understanding, whether or not in writing. Without
duplicative  counting  of the same  securities  by the same  holder,  securities
Beneficially  Owned by a Person shall include  securities  Beneficially Owned by
all other Persons with whom such Person would constitute a "group" as within the
meaning of Section 13(d)(3) of the Exchange Act.

                  "Business Day" means any day excluding:  Saturday,  Sunday and
any day  which is in the City of New York a legal  holiday  or a day upon  which
banking  institutions  in the City of New York are required or authorized by law
or other governmental action to close.


                                        2

<PAGE>



                  "CGCL" shall mean the General Corporation Law of the State of
California.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
as amended.

                  "Limited Partnership Units" shall mean units of limited
partnership interest.

                  "Listed McNeil Partnerships" means McNeil Real Estate Fund IX,
Ltd.,  McNeil Real Estate Fund X, Ltd., McNeil Real Estate Fund XI, Ltd., McNeil
Real Estate Fund XIV, Ltd., McNeil Real Estate Fund XV, Ltd., McNeil Real Estate
Fund XX, L.P.,  McNeil Real Estate Fund XXIV, L.P., McNeil Real Estate Fund XXV,
L.P., McNeil Real Estate Fund XXVI, L.P. and McNeil Real Estate Fund XXVII, L.P.

                  "Minimum  Amount"  shall mean,  with  respect to a class of LP
Interests in a Listed McNeil  Partnership,  the amount set forth with respect to
such class of LP Interests  opposite the name of such Listed McNeil  Partnership
under the column heading "Minimum Amount" on Annex C hereto.

                  "Person" shall mean an individual,  corporation,  partnership,
limited partnership,  limited liability company,  syndicate, trust, association,
unincorporated  organization,  governmental entity, political subdivision, or an
agency or instrumen tality of a governmental entity.

                  "Per Unit  Aggregate  Amount"  shall mean,  with  respect to a
class of LP Interests in a McNeil Partnership, an amount equal to the sum of (i)
the per unit merger  consideration for an LP Interest in such class and (ii) the
applicable  portion of the Excess Cash Balance of such McNeil  Partnership to be
distributed to an LP Interest in such class.

                  "Subsidiary"  of a specified  Person  shall mean an  Affiliate
controlled  by  such  Person  directly,   or  indirectly  through  one  or  more
intermediaries, where "control" means the possession, directly or indirectly, of
the power to direct or cause the direction of the  management  and policies of a
Person, whether through the ownership of voting securities, by written or verbal
agreement, as trustee or executor, or otherwise.


                                        3

<PAGE>



                  Section 1.2  Definitions  from Master  Agreement.  Capitalized
terms used but not otherwise  defined herein and which are defined in the Master
Agree ment shall have the meanings  ascribed to them in the Master Agreement (in
each case, as in effect on the date hereof,  except as expressly provided to the
contrary herein or in the Settlement Agreement).

                  Section 1.3  Interpretation.

                           (a) The  parties  have  participated  jointly  in the
negotiation  and  drafting  of this  Agreement.  Consequently,  in the  event an
ambiguity or question of intent or interpretation  arises,  this Agreement shall
be construed as if drafted jointly by the parties hereto,  and no presumption or
burden of proof shall arise favoring or  disfavoring  any party by virtue of the
authorship of any provision of this Agreement.

                           (b) When a reference  is made in this  Agreement to a
section, article,  paragraph,  clause, annex or exhibit, such reference shall be
to a reference  to this  Agreement  unless  otherwise  clearly  indicated to the
contrary.  The descriptive  article and section headings herein are intended for
convenience  of reference only and are not intended to be a part of or to affect
the meaning or interpretation  of this Agreement.  Whenever the words "include",
"includes" or "including"  are used in this Agreement they shall be deemed to be
followed  by the words  "without  limita  tion." The words  "hereof,"  "herein,"
"herewith"  and "hereto" and words of similar  import  shall,  unless  otherwise
stated,  be  construed  to refer  to this  Agreement  as a whole  and not to any
particular  provision of this Agreement.  The meaning assigned to each term used
in this  Agreement  shall be equally  applicable  to both the  singular  and the
plural  forms of such term,  and words  denoting  any gender  shall  include all
genders. Where a word or phrase is defined herein, each of its other grammatical
forms shall have a corresponding  meaning. Any reference in this Agreement to an
Article  or  Section  of the Master  Agreement  shall  apply to said  Article or
Section,  as the case may be, as in effect on the date  hereof or any similar or
comparable provi sion of the Master Agreement if such Article or Section, as the
case may be, is amended from time to time.



                                        4

<PAGE>



                                   ARTICLE II

              REPRESENTATIONS AND WARRANTIES OF THE SECURITYHOLDERS

                  Each  Securityholder  jointly  and  severally  represents  and
warrants to each McNeil Party as follows:

                  Section 2.1    Oral Representations, Mistake of Fact or Law.

                           (a) No  party  (nor  any  director,  officer,  agent,
partner, equity holder, member, controlling person, employee, representative, or
attorney of or for any  party),  has made any  statement  or  representation  or
failed to make any statement or representation to any  Securityholder  regarding
any fact relied upon in entering into this  Agreement,  and each  Securityholder
does not rely upon any statement,  represen  tation,  omission or promise of any
other party (or of any director, officer, agent, partner, equity holder, member,
controlling person, employee,  representative, or attorney for any other party),
in executing this Agreement, except as expressly stated in this Agreement.

                           (b)   In   entering   into   this   Agreement,   each
Securityholder  assumes  the  risk  of  any  misrepresentation,  concealment  or
mistake,  other than written  misrepresentations  made to such Securityholder by
any other  party or  parties in this  Agreement.  If any  Securityholder  should
subsequently  discover  that any fact relied  upon by it in  entering  into this
Agreement  was  untrue,  or that  any fact was  concealed  from it,  or that its
understanding  of the facts or of the law was  incorrect  (except,  in each such
case, for any matter  expressly  misrepresented  in writing in this Agreement to
such Securityholder by any other party or parties),  such  Securityholder  shall
not be  entitled  to any  relief  in  connection  therewith  including,  without
limiting the  generality  of the  foregoing,  any alleged  right or claim to set
aside or rescind this Agreement.

                  Section 2.2  Ownership of Securities.

                           (a) Such  Securityholder is the record and Beneficial
Owner of the Limited  Partnership Units in the McNeil  Partnerships set forth on
Annex  A  hereto  opposite  the  name  of  such  Securityholder   (such  Limited
Partnership Units, collectively, the "Existing Securities"). On the date hereof,
the Existing  Securities  constitute all of the Limited Partnership Units in the
McNeil   Partnerships   owned  of   record   or   Beneficially   Owned  by  such
Securityholder.  Except as set forth on Annex A hereto,  such Securityholder has
sole voting power and sole power to enter into the

                                        5

<PAGE>



agreements set forth in Article IV hereof, sole power of disposition, sole power
of conversion, sole power to demand dissenters' or appraisal rights (if any) and
sole power to agree to all of the matters set forth in this  Agreement,  in each
case with respect to all of the Existing  Securities of such Securityholder with
no  limitations,  qualifications  or  restrictions  on such  rights,  subject to
applicable securities laws and the terms of this Agreement.

                           (b)  Except  as set  forth  on  Annex  A  hereto,  no
Affiliate,  Subsidiary,  officer,  director,  partner,  member, equity holder or
controlling  person  of  such  Securityholder   Beneficially  Owns  any  Limited
Partnership Units in any of the McNeil Partnerships.

                    Section 2.3 Power;  Binding Agreement.  Such  Securityholder
has the legal  capacity,  power and  authority  to enter into and perform all of
such Securityholder's obligations under this Agreement. The execution,  delivery
and  performance of this Agreement by such  Securityholder  will not violate any
other  agreement  to which such  Securityholder  is a party  including,  without
limitation,   any  voting  agreement,   proxy  arrangement,   pledge  agreement,
shareholders agreement or voting trust. This Agreement has been duly and validly
executed  and  delivered  by such  Securityholder  and  constitutes  a valid and
binding   agreement   of   such   Securityholder,   enforceable   against   such
Securityholder  in accordance with its terms.  There is no beneficiary or holder
of a voting  trust  certificate  or other  interest  of any trust of which  such
Securityholder  is a trustee  whose  consent is required for the  execution  and
delivery of this Agreement or the  consummation  by such  Securityholder  of the
transactions contemplated by this Agreement.

                  Section  2.4 No  Conflicts.  No filing  with,  and no  permit,
authoriza  tion,  consent  or  approval  of,  any  Governmental  Entity  for the
execution of this Agreement by such  Securityholder and the consummation by such
Securityholder of the transactions  contemplated by this Agreement,  and none of
the  execution  and  delivery  of this  Agreement  by such  Securityholder,  the
consummation by such  Securityholder  of the  transactions  contemplated by this
Agreement or compliance  by such  Securityholder  with any of the  provisions of
this  Agreement  shall  (i)  conflict  with  or  result  in  any  breach  of any
organizational  documents of any  Securityholder,  (ii) result in a violation or
breach of, or  constitute  (with or  without  notice or lapse of time or both) a
default (or give rise to any third party right of  termination,  cancella  tion,
material  modification or  acceleration)  under any of the terms,  conditions or
provisions of any note,  loan agreement,  bond,  mortgage,  indenture,  license,
contract, commitment, arrangement,  understanding, agreement or other instrument
or obliga  tion of any kind to which any  Securityholder  is a party or by which
any

                                        6

<PAGE>



Securityholder or any of its properties or assets may be bound, or (iii) violate
any order, writ,  injunction,  decree,  judgment,  order,  statute,  arbitration
award,  rule  or  regulation  applicable  to  any  Securityholder  or any of its
properties or assets.


                                   ARTICLE III

              REPRESENTATIONS AND WARRANTIES OF THE McNEIL PARTIES

                  Each of the McNeil  Parties  jointly and severally  represents
and warrants to the Securityholders as follows:

                  Section  3.1  Power;  Binding  Agreement.  Each of the  McNeil
Parties has the legal  capacity,  power and  authority to enter into and perform
all of such party's  obligations under this Agreement.  The execution,  delivery
and  performance  of this  Agreement  by such McNeil  Party will not violate any
other  agreement  to  which  such  McNeil  Party is a party  including,  without
limitation,   any  voting  agreement,   proxy  arrangement,   pledge  agreement,
shareholders agreement or voting trust. This Agreement has been duly and validly
executed and delivered by such McNeil Party and  constitutes a valid and binding
agreement  of such  McNeil  Party  enforceable  against  such  McNeil  Party  in
accordance  with its terms.  There is no beneficiary or holder of a voting trust
certificate  or other  interest  of any trust of which  such  McNeil  Party is a
trustee  whose  consent is  required  for the  execution  and  delivery  of this
Agreement  or  the  consummation  by  such  McNeil  Party  of  the  transactions
contemplated by this Agreement.

                  Section  3.2 No  Conflicts.  No filing  with,  and no  permit,
authoriza  tion,  consent  or  approval  of,  any  Governmental  Entity  for the
execution of this  Agreement by such McNeil Party and the  consummation  by such
McNeil Party of the transactions contemplated by this Agreement, and none of the
execution and delivery of this  Agreement by such McNeil Party the  consummation
by such McNeil  Party of the  transactions  contemplated  by this  Agreement  or
compliance  by such McNeil Party with any of the  provisions  of this  Agreement
shall (i) conflict with or result in any breach of any organizational  documents
of any McNeil Party (ii) result in a violation or breach of, or constitute (with
or without notice or lapse of time or both) a default (or give rise to any third
party right of termination, cancellation, material modification or acceleration)
under any of the terms,  conditions or provisions of any note,  loan  agreement,
bond,  mortgage,   indenture,   license,  contract,   commitment,   arrangement,
understanding,  agreement or other instrument or obligation of any kind to which
any McNeil Party is a party or by which any McNeil Party or any of its

                                        7

<PAGE>



properties or assets may be bound, or (iii) violate any order, writ, injunction,
decree,  judgment,  order,  statute,   arbitration  award,  rule  or  regulation
applicable to any McNeil Party or any of its properties or assets.

                  Section 3.3    Oral Representations, Mistake of Fact or Law.

                           (a) No  party  (nor  any  director,  officer,  agent,
partner, equity holder, member, controlling person, employee, representative, or
attorney of or for any  party),  has made any  statement  or  representation  or
failed to make any statement or representation to any McNeil Party regarding any
fact relied upon in entering into this Agreement, and each McNeil Party does not
rely upon any statement, representa tion, omission or promise of any other party
(or of any director, officer, agent, partner, equity holder, member, controlling
person, employee, representative, or attorney for any other party), in executing
this Agreement, except as expressly stated in this Agreement.

                           (b) In  entering  into this  Agreement,  each  McNeil
Party assumes the risk of any  misrepresentation,  concealment or mistake, other
than written  misrepresentations made to such McNeil Party by any other party or
parties in this Agreement. If any McNeil Party should subsequently discover that
any fact relied upon by it in entering into this  Agreement was untrue,  or that
any fact was concealed from it, or that its understanding of the facts or of the
law was  incorrect  (except,  in  each  such  case,  for  any  matter  expressly
misrepresented  in writing in this  Agreement  to such McNeil Party by any other
party or  parties),  such  McNeil  Party  shall not be entitled to any relief in
connection  therewith   including,   without  limiting  the  generality  of  the
foregoing, any alleged right or claim to set aside or rescind this Agreement.


                                   ARTICLE IV

                  VOTING AGREEMENT, GRANT OF IRREVOCABLE PROXY

                  Section 4.1 Voting Agreement.  Each  Securityholder  shall, at
any meeting of the  limited  partners of any McNeil  Partnership,  however  such
meeting is called  and  regardless  of the  purpose  for which  such  meeting is
called,  or in connec tion with any written  consent of the limited  partners of
any McNeil Partnership, vote all of the Limited Partnership Units in such McNeil
Partnership that are held of record by such Securityholder:  (i) in favor of the
approval  of the  Master  Agreement,  the  terms  thereof  and the  transactions
contemplated thereby, including without

                                        8

<PAGE>



limitation, the Merger in respect of such McNeil Partnership,  the MPLP Contribu
tions with respect to such McNeil Partnership, the appointment of the applicable
New GP LLC as the  successor  general  partner of such McNeil  Partnership,  the
other  transactions  contemplated  by the Master  Agreement with respect to such
McNeil  Partnership  and  any  other  transactions  contemplated  by the  Master
Agreement  or the other  Transaction  Documents  which  require  approval of the
limited  partners of such McNeil  Partnership;  and (ii) against any Acquisition
Proposal  and  against  any  action or written  or verbal  agreement  that would
impede,  frustrate,  prevent or nullify this Agreement, the Settlement Agreement
or the Master  Agreement,  or result in a breach in any respect of any covenant,
representation or warranty or any other obligation or agreement of Sellers under
the Master  Agreement or which would result in any one or more of the conditions
set  forth in  Sections  8.1,  8.2 and 8.3 of the  Master  Agree  ment not being
satisfied.  Notwithstanding the foregoing,  it is understood that the obligation
of the Securityholders with respect to the voting of 100,000 Limited Partnership
Units in McNeil Real Estate Fund XXVII,  L.P. ("Fund XXVII") Benefi cially Owned
by the  Securityholder  but held of record by the Resolution  Trust  Corporation
("RTC") or the Federal Deposit  Insurance  Corporation  ("FDIC") shall be as set
forth in the proviso at the end of Section 4.3(a) hereof.

                  Section 4.2 No Inconsistent Arrangements.  Each Securityholder
hereby covenants and agrees that it shall not, and it shall cause its Affiliates
and Subsidiaries not to, other than pursuant to the transactions contemplated by
the Master Agreement (i) transfer (which term shall include, without limitation,
any  sale,  gift,   pledge,   assignment,   hypothecation,   exchange  or  other
disposition),  or  consent  to any  transfer  of,  any  or  all  of the  Limited
Partnership Units Beneficially Owned by such Securityholder or its Affiliates or
Subsidiaries,  in any of the McNeil Partner ships or any interest therein,  (ii)
enter  into any  contract,  option  or other  written  or  verbal  agreement  or
understanding  with  respect  to any  transfer  of any  or all of  such  Limited
Partnership   Units  or  any   interest   therein,   (iii)   grant  any   proxy,
power-of-attorney  or other  authorization  in or with  respect to such  Limited
Partner ship Units,  (iv) deposit such Limited  Partnership  Units into a voting
trust or enter  into a voting  agreement  or  arrangement  with  respect to such
Limited  Partnership  Units,  or (v) take any other action that would in any way
restrict,  limit or interfere with the performance of its obligations under this
Agreement,  the Settlement Agreement or any of the transactions  contemplated by
this  Agreement,  the Settlement  Agreement,  the Master  Agreement or the other
Transaction Documents.

                  Section 4.3  Grant of Irrevocable Proxy; Appointment of Proxy.


                                        9

<PAGE>



                           (a) Each Securityholder hereby irrevocably grants to,
and appoints,  RAM, Ron K. Taylor and Barbara Smith, each in his or her capacity
as an officer of MII, and any individual who shall hereafter succeed to any such
office of MII, and each of them individually,  such  Securityholder's  proxy and
attorney-in-fact  (with full power of substitution),  for and in the name, place
and stead of such  Securityholder  to vote all of the Limited  Partnership Units
Beneficially  Owned by such  Securityholder,  its Affiliates and Subsidiaries in
any of the McNeil  Partner  ships:  (A) in favor of the  approval  of the Master
Agreement,  the  terms  thereof  and  the  transactions   contemplated  thereby,
including without limitation,  the Merger in respect of such McNeil Partnership,
the MPLP Contributions with respect to such McNeil Partnership,  the appointment
of the  applicable  New GP LLC as the successor  general  partner of such McNeil
Partnership,  the other  transactions  contemplated by the Master Agreement with
respect to such McNeil  Partnership and any other  transactions  contemplated by
the Master Agreement or the other  Transaction Docu ments which require approval
of the  limited  partners  of  such  McNeil  Partnership;  and (B)  against  any
Acquisition  Proposal and against any action or written or verbal agreement that
would  impede,  frustrate,  prevent or nullify this  Agreement,  the  Settlement
Agreement or the Master  Agreement,  or result in a breach in any respect of any
covenant,  representation  or warranty or any other  obligation  or agreement of
Sellers  under the Master  Agreement or which would result in any one or more of
the  conditions  set forth in Sections 8.1, 8.2 and 8.3 of the Master  Agreement
not being satisfied; provided however, it is understood that no proxy is granted
with respect to Limited  Partnership Units in Fund XXVII  Beneficially  Owned by
the  Securityholders  but held of record by the RTC or the FDIC but rather, such
Limited  Partnership Units shall be voted by RTC or FDIC at the direction of the
applicable  Securityholder and the applicable Securityholder shall direct RTC or
FDIC  to  vote  such  Limited  Partner  ship  Units  in such  manner,  but  such
Securityholder  shall have no liability for RTC's or FDIC's failure to vote such
Limited   Partnership   Units  in  the  manner   directed   by  the   applicable
Securityholder.

                           (b) Each Securityholder  hereby jointly and severally
represents and warrants to each McNeil Party that any proxies  heretofore  given
by any  Person  in  respect  of any or  all  of the  Limited  Partnership  Units
Beneficially  Owned by such  Securityholder or its Affiliates or Subsidiaries in
any of the McNeil Partner ships are not  irrevocable,  and that any such proxies
are hereby revoked.

                           (c) Each Securityholder hereby affirms that the proxy
set forth in this Section 4.3 is given to secure the  performance  of the duties
of such Securityholder  under this Agreement,  in accordance with Section 705(e)
of the  CGCL.  Each  Securityholder  hereby  further  affirms  that the proxy is
coupled with an

                                       10

<PAGE>



interest and may under no circumstances be revoked.  Each Securityholder  hereby
ratifies  and  confirms  any and all actions  that such proxy may lawfully do or
cause to be done by virtue  hereof.  Such proxy is executed  and  intended to be
irrevocable in accordance with the provisions of Section 705 of the CGCL.

                  Section  4.4 Stop  Transfer.  Each  Securityholder  shall  not
request  that the McNeil  Partnerships  register  the  transfer  (book-entry  or
otherwise) of any certificate or uncertificated interest representing any of its
Existing  Securities,  unless  such  transfer  is made in  compliance  with this
Agreement.   In  the  event  of  any  dividend  or  distribution  consisting  of
securities,  or any change in the capital structure of any McNeil Partnership by
reason of any  non-cash  dividend,  split-up,  recapitaliza  tion,  combination,
exchange of securities or the like, the term "Existing  Securities"  shall refer
to and  include  the  Existing  Securities  as well as all  such  dividends  and
distributions  of securities and any  securities  into which or for which any or
all of the Existing Securities may be changed or exchanged.

                  Section 4.5 Dissenters'  Rights. By virtue of its execution of
this Agreement, each Securityholder hereby irrevocably waives any and all rights
it may have to assert any dissenters' rights,  appraisal rights or other similar
rights  granted under the  provisions of Article 7.6 of the  California  Revised
Limited  Partnership  Act or any  similar or  successor  statute,  law,  rule or
regulation (collectively, the "Rights") with respect to the Merger in respect of
any McNeil  Partnership,  the MPLP  Contribu  tions  with  respect to any McNeil
Partnership,  the  appointment  of the  applicable  New GP LLC as the  successor
general partner of any McNeil Partnership,  the other transactions  contemplated
by the Master  Agreement  with respect to any McNeil  Partnership  and any other
transactions  contemplated  by the  Master  Agreement  or the other  Transaction
Documents.




                                       11

<PAGE>



                                    ARTICLE V

                           NO SOLICITATION; STANDSTILL

                 Each  Securityholder  agrees, for a period commencing as of the
date of this  Agreement and ending on the third  anniversary of the date of this
Agreement, as follows:

                 Section 5.1 No Solicitation.  Each Securityholder hereby agrees
that neither such Securityholder nor any of its Affiliates or Subsidiaries shall
(and such Securityholder shall cause the officers, directors, partners, members,
equity holders,  controlling persons,  employees,  representatives and agents of
such Securityholder, its Affiliates and Subsidiaries, including, but not limited
to,  investment  bankers,  attorneys and accountants who are acting as agents or
representatives of any such  Securityholder,  Affiliate or Subsidiary,  not to),
directly  or  indirectly,   encourage,   solicit,  participate  in  or  initiate
discussions  or  negotiations  with, or provide any  information  to, any Person
(other than any McNeil Party or any of their  representa  tives)  concerning any
Acquisition  Proposal.  Each Securityholder shall (and such Securityholder shall
cause the officers,  directors,  partners, members, equity holders,  controlling
persons,  employees,  representatives  and  agents of such  Securityholder,  its
Affiliates and Subsidiaries,  including, but not limited to, investment bankers,
attorneys and  accountants  who are acting as agents or  representatives  of any
such Securityholder, Affiliate or Subsidiary, to) immediately cease any existing
activities,  discussions or negotiations with any Persons  conducted  heretofore
with respect to any Acquisition Proposal.

                 Section 5.2 Standstill. Each Securityholder agrees that neither
it nor any Person  who is an  Affiliate  or  Subsidiary  of such  Securityholder
shall,  without the prior written  consent of MPLP, (i) in any manner,  acquire,
attempt to acquire or make an offer or seek to make an offer with respect to, or
a proposal to acquire, directly or indirectly, any securities or property of any
of the entities listed on Annex B hereto (collectively,  the "McNeil Entities"),
(ii)  propose to enter  into,  directly  or  indirectly,  any merger or business
combination  involving  any of the McNeil  Entities or to purchase,  directly or
indirectly,  any of the assets of any of the McNeil Entities,  (iii) make, or in
any way participate,  directly or indirectly, in any "solicitation" of "proxies"
(as such  terms  are used in the  proxy  rules of the  Securities  and  Exchange
Commission)  to vote,  or seek to advise or influence any Person with respect to
the voting of any voting  securities of any of the McNeil  Entities,  (iv) form,
join or  otherwise  participate  in a "group"  (within  the  meaning  of Section
13(d)(3)  of the  Exchange  Act) with  respect to any voting  securities  of the
McNeil Entities, (v)

                                       12

<PAGE>



otherwise act, alone or in concert with others,  to seek to control or influence
the  management,  Board of Directors of the corporate  general partner of any of
the McNeil Entities or policies of any of the McNeil  Entities,  (vi) loan money
to, advise, assist or encourage any Person in connection with any of the actions
described in this sentence, or (vii) disclose any intention, plan or arrangement
inconsistent  with the  foregoing.  Notwithstanding  the  foregoing,  after  the
Closing, (a) "McNeil Entity" shall mean: (i) any entity listed on Annex B hereto
that is not acquired, directly or indirectly, by the Company at the Closing, but
only so long as such entity is wholly-owned,  directly or indirectly, by any one
or more of RAM, CJM, MPLP, McREMI or MII (provided,  in the case of MPLP, McREMI
or MII, that such entity is wholly-owned,  directly or indirectly, by RAM and/or
CJM) and (ii) WXI/MNL Real Estate, L.L.C. ("Real Estate,  L.L.C."),  but only so
long as there is no change in control of Real Estate,  L.L.C. and (b) subject to
clause (a) above, the provisions of this Section 5.2 shall apply only to actions
taken or proposals  made by any  Securityholder  or any  Affiliate or Subsidiary
thereof,  with respect to (1) Real Estate,  L.L.C.,  the Company,  each of their
respective  Subsidiaries  formed for the purpose of engaging in the transactions
contemplated by the Master  Agreement,  and entities in which one or more of the
McNeil Parties (or their Subsidiary  partnerships or corporations) have a direct
or indirect  interest  immediately  prior to the Closing and (2) assets in which
one or  more  of  the  McNeil  Parties  (or  their  Subsidiary  partnerships  or
corporations)  have a  direct  or  indirect  interest  immediately  prior to the
Closing.


                                   ARTICLE VI

                               GENERAL PROVISIONS

                 Section 6.1  Survival.

                           (a)  Except as  provided  by  Article V and  Sections
6.1(b), 6.1(c) and 6.1(d) hereof, the representations, warranties, covenants and
agreements of the parties contained in this Agreement shall remain in full force
and effect indefinitely.

                           (b) The rights and  obligations of the parties hereto
contained  in Articles IV and V of this  Agreement  with respect to a particular
McNeil Partnership (and each Subsidiary  corporation and Subsidiary  partnership
thereof) shall terminate if and when such McNeil Partnership becomes an Excluded
McNeil Partnership through the operation of Section 9.3 of the Master Agreement,
it being  understood  that  within 3 Business  Days after the date of any McNeil
Party's receipt or delivery of

                                       13

<PAGE>



notice  pursuant to such Section  9.3,  such McNeil Party will deliver a copy of
such notice to the Securityholders.

                           (c) In the case of a Listed McNeil  Partnership only,
the Securityholders shall have the right to terminate the rights and obligations
of the parties  hereto  contained  in Articles IV and V of this  Agreement  with
respect to such Listed McNeil  Partnership (and each Subsidiary  corporation and
Subsidiary  partner ship thereof) if the definitive Proxy  Statement,  any Proxy
Statement supplement or any press release announcing a reduction in the Per Unit
Aggregate  Amount (or a reduction in the estimate  thereof) payable with respect
to a class of LP Interests in such Listed McNeil  Partnership  provides that the
Per Unit  Aggregate  Amount payable (or estimated to be payable) with respect to
such class of LP Interests in such Listed  McNeil  Partnership  is less than the
Minimum  Amount with respect to such class of LP Interests in such Listed McNeil
Partnership.   To  terminate  such  rights  and  obligations  pursuant  to  this
provision,  the  Securityholders  shall  deliver a notice to the McNeil  Parties
within 10  Business  Days  after  the date of the  applicable  definitive  Proxy
Statement,  or  Proxy  Statement  supplement  or the  date a copy of such  press
release is furnished to them pursuant to Section 6.1(f) hereof;  failure to give
such  notice  within  such time  frame  shall be deemed a waiver of the right to
terminate the rights and obligations of the parties hereto contained in Articles
IV and V of this  Agreement  with  respect  to such  Listed  McNeil  Partnership
pursuant to this Section 6.1(c).

                           (d) The  covenants and  agreements  contained in this
Agreement shall terminate in their entirety on the date which is the earliest to
occur of:  (i) June 30,  2000,  in the  event  that the  Closing  shall not have
occurred  on or prior to June 30,  2000;  (ii)  the  termination  of the  Master
Agreement  pursuant to Section 9.1  thereof;  and (iii) the  termination  of the
Master  Agreement  with respect to the last  Participat  ing McNeil  Partnership
pursuant to Section 9.3 thereof.

                           (e) The parties hereto acknowledge and agree that the
termination of the rights and  obligations  of the parties  hereto  contained in
Articles  IV  and V of  this  Agreement  with  respect  to a  particular  McNeil
Partnership shall in no way affect the rights or obligations of any party hereto
with respect to any other McNeil Partnership.

                           (f) MPLP hereby agrees that it will promptly  issue a
press release and furnish a copy thereof to the  Securityholders if, at any time
subsequent  to the date of the  definitive  Proxy  Statement  with  respect to a
Listed  McNeil  Partner  ship,  the Per Unit  Aggregate  Amount (or the estimate
thereof) payable with respect

                                       14

<PAGE>



to a class of LP Interests in such Listed  McNeil  Partnership  is reduced to an
amount less than the Minimum  Amount with  respect to such class of LP Interests
in such Listed McNeil Partnership.

                 Section  6.2   Specific   Performance.   Each   Securityholder
recognizes  and  agrees  that if for any reason  any of the  provisions  of this
Agreement are not per formed by such  Securityholder  in  accordance  with their
specific terms or are other wise  breached,  immediate and  irreparable  harm or
injury would be caused to MPLP for which money  damages would not be an adequate
remedy.  Accordingly,  each Securityholder agrees that, in addition to any other
available  remedies,  MPLP shall be entitled to an  injunction  restraining  any
violation or threatened  violation of the provisions of this  Agreement  without
the  necessity of MPLP  posting a bond or other form of  security.  In the event
that any action  should be brought in equity to enforce the  provisions  of this
Agreement,  each  Securityholder  agrees  that  it will  not  allege,  and  each
Securityholder  hereby waives the defense,  that there is an adequate  remedy at
law.

                 Section 6.3 Notices. All notices, requests, claims, demands and
other  communications  under this  Agreement  shall be in  writing  and shall be
delivered personally,  sent by overnight courier (providing proof of delivery or
refusal of delivery) to the parties or sent by telecopy (providing  confirmation
of  transmission)  at the  following  addresses or telecopy  numbers (or at such
other  address  or  telecopy  number for a party as shall be  specified  by like
notice):

                 If to any Securityholder, to:

                 High River Limited Partnership
                 767 Fifth Avenue, 47th Floor
                 New York, New York 10153
                 Attention:  Carl C. Icahn
                 Telecopier No:  (212) 750-5807

                 with copies to:

                 Gordon Altman Weitzen Shalov & Wein LLP
                 114 West 47th Street
                 New York, New York 10036
                 Attention:  Theodore Altman
                 Telecopier No.:  (212) 629-0799


                                       15

<PAGE>



                 If to any McNeil Party, to:

                 McNeil Partners, L.P.
                 c/o Robert and Carole McNeil
                 229 Polhemus Avenue
                 Atherton, California 94027
                 Telecopier No.:  (650) 323-0720

                 with copies to:

                 McNeil Partners, L.P.
                 c/o Robert and Carole McNeil
                 1001 California Street, #600
                 San Francisco, California 94018
                 Telecopier No.:  (415) 441-2380

                 and:

                 Skadden, Arps, Slate, Meagher & Flom LLP
                 919 Third Avenue
                 New York, New York  10022
                 Attention:  William P. Frank, Esq.
                 Telecopier No.:  (212) 735-2000

All notices  shall be deemed given only when actually  received.  The parties to
this Agreement  agree that the provision of notice  pursuant to this Section 6.3
shall constitute notice for service of any writ, process or summons in any suit,
action or other proceeding.

                 Section  6.4  Severability.  Any  term  or  provision  of  this
Agreement which is invalid or  unenforceable  in any  jurisdiction  shall, as to
that  jurisdiction,   be  ineffective  to  the  extent  of  such  invalidity  or
unenforceability  without rendering invalid or unenforceable the remaining terms
and provisions of this Agreement or affecting the validity or  enforceability of
any of the terms or provisions of this Agreement in any other  jurisdiction.  If
any  provision  of  this  Agreement  is so  broad  as to be  unenforceable,  the
provision shall be interpreted to be only so broad as is enforceable.

                    Section 6.5 Attorneys' Fees. If any action at law or equity,
including an action for declaratory  relief,  is brought to enforce or interpret
any provision of this

                                       16

<PAGE>



Agreement,  the  prevailing  party  shall  be  entitled  to  recover  reasonable
attorneys' fees and expenses from the other party, which fees and expenses shall
be in addition to any other relief which may be awarded.

                    Section 6.6 GOVERNING LAW. THIS AGREEMENT  SHALL BE GOVERNED
BY,  AND  CONSTRUED  IN  ACCORDANCE  WITH,  THE LAWS OF THE  STATE OF NEW  YORK,
REGARDLESS OF THE LAWS THAT MIGHT OTHERWISE GOVERN UNDER APPLICABLE  PRINCI PLES
OF CONFLICTS OF LAWS THEREOF.

                 Section 6.7 Entire  Agreement;  No Third  Party  Beneficiaries.
This Agreement,  the Settlement Agreement and the Letter Agreement,  dated as of
the date hereof among the parties  hereto,  constitute the entire  agreement and
supersede  all prior  agreements  and  understandings,  both written and verbal,
among the  parties  hereto or any of them with  respect  to the  subject  matter
hereof. This Agreement is not intended to confer upon any Person (other than the
parties to this  Agreement  and the  McNeil  Entities)  any  rights or  remedies
whatsoever.

                 Section 6.8 Consent to Jurisdiction. Each of the parties hereto
irrevocably  and  unconditionally  submits to the exclusive  jurisdiction of the
court where the  Individual  Action was filed,  in any action arising out of the
enforcement of this  Agreement.  In any such action,  suit or other  proceeding,
each of the parties hereto irrevocably and unconditionally waives and agrees not
to assert by way of motion,  as a defense or otherwise any claims that it is not
subject to the  jurisdiction  of the above  court,  that such  action or suit is
brought in an inconvenient forum or that the venue of such action, suit or other
proceeding  is improper.  Each of the parties  hereto also agrees that any final
and  unappealable  judgment  against a party hereto in connection  with any such
action,  suit or other  proceeding shall be conclusive and binding on such party
and that such  award or  judgment  may be  enforced  in any  court of  competent
jurisdiction,  either  within or outside of the United  States.  A certified  or
exemplified  copy of such award or judgment shall be conclusive  evidence of the
fact and amount of such award or judgment.

                 Section  6.9  Assignment;   Binding  Agreement.   Neither  this
Agreement nor any of the rights,  interests or obligations  under this Agreement
shall be assigned  \or  delegated,  in whole or in part,  by operation of law or
otherwise by any of the parties  without the prior written  consent of the other
parties.  This  Agreement  shall be binding  upon the  parties  hereto and their
respective successors and assigns. This Agreement shall inure to the benefit of,
and be  enforceable  by, the parties  hereto and (if and to the extent the prior
written consent of the other parties hereto to such

                                       17

<PAGE>



succession or assignment  has been  obtained  pursuant to the first  sentence of
this Section 6.9), their respective successors and assigns. Notwithstanding this
Section 6.9, after the Effective Time, this Agreement shall inure to the benefit
of, and be enforceable by, the Company and its Affiliates so long as the Company
and any such affiliate is an Affiliate of The Goldman Sachs Group, Inc.

                 Section 6.10 Amendment, Modification and Waiver. This Agreement
may not be amended, modified or waived except by an instrument or instruments in
writing  signed and  delivered on behalf of the party  hereto  against whom such
amendment, modification or waiver is sought to be entered.

                 Section 6.11  Counterparts.  This  Agreement may be executed in
one or more  counterparts,  all of which  shall be  considered  one and the same
agreement and shall become  effective  when one or more  counterparts  have been
signed by each of the parties hereto and delivered to the other parties hereto.

                                    * * * * *

                                       18

<PAGE>



                 IN WITNESS  WHEREOF,  the  parties  hereto have  executed  this
Voting Agreement as of the day and year first above written.



                                /s/ Robert A. McNeil
                                Robert A. McNeil



                                /s/ Carole J. McNeil
                                Carole J. McNeil


                                McNEIL PARTNERS, L.P.,
                                in its own capacity and on behalf of each of the
                                McNeil Partnerships (other than Regency
                                North, Fairfax and Summerhill)

                                By:     McNeil Investors, Inc.,
                                        its General Partner


                                        By:/s/ Robert A. McNeil
                                        Name: Robert A. McNeil
                                        Title: Chairman of the Board


                                McNEIL INVESTORS, INC.


                                By:/s/ Robert A. McNeil
                                Name: Robert A. McNeil
                                Title: Chairman of the Board








                                       19

<PAGE>
                                McNEIL REAL ESTATE MANAGEMENT, INC.



                                By:/s/ Robert A. McNeil
                                Name: Robert A. McNeil
                                Title: Co-Chairman of the Board


                                REGENCY NORTH ASSOCIATES, L.P.


                                By: /s/ Robert A. McNeil
                                Name:  Robert A. McNeil
                                Title:  General Partner


                                FAIRFAX ASSOCIATES II, LTD.



                                By: /s/ Robert A. McNeil
                                Name:  Robert A. McNeil
                                Title:  General Partner


                                McNEIL SUMMERHILL I, L.P.

                                By:     McNeil Summerhill, Inc.,
                                        its General Partner


                                        By: /s/ Robert A. McNeil
                                        Name:  Robert A. McNeil
                                        Title:  Co-Chairman of the Board

                                       20

<PAGE>


                                HIGH RIVER LIMITED PARTNERSHIP

                                By:     Riverdale LLC,
                                        its General Partner


                                        By:/s/ Edward E. Mattner
                                        Name:  Edward E. Mattner
                                        Title: Manager


                                RIVERDALE LLC


                                By:/s/ Edward E. Mattner
                                Name:  Edward E. Mattner
                                Title:  Manager


                                UNICORN ASSOCIATES CORPORATION


                                By:/s/ Edward E. Mattner
                                Name:  Edward E. Mattner
                                Title:  President


                                LONGACRE CORP.


                                By:/s/ Edward E. Mattner
                                Name:  Edward E. Mattner
                                Title:   President


                                /s/ Carl C. Icahn
                                Carl C. Icahn

                                       21

<PAGE>



<TABLE>
<CAPTION>
<S>                              <C>                                   <C>          <C>         <C>       <C>           <C>

                                                                                                                         ANNEX A


                                                                        Number of Limited Partnership Units Beneficially Owned


  Securityholder                    McNeil Partnership
                                                                                    Sole        Shared    Sole          Shared
                                                                                    Voting      Voting    Dispositive   Dispositive
                                                                       Total Units  Power       Power     Power         Power
High River Limited Partnership   McNeil Real Estate Fund IX, Ltd.      13,088       13,088       0        13,088         0
High River Limited Partnership   McNeil Real Estate Fund X, Ltd.       9,539        9,539        0        9,539          0
High River Limited Partnership   McNeil Real Estate Fund XI, Ltd.      16,418.67    16,418.67    0        16,418.67      0
High River Limited Partnership   McNeil Real Estate Fund XIV, Ltd.     10,105       10,105       0        10,105         0
High River Limited Partnership   McNeil Real Estate Fund XV, Ltd.      9,761        9,761        0        9,761          0
High River Limited Partnership   McNeil Real Estate Fund XX, L.P.      5,084.938    5,084.938    0        5,084.938      0
High River Limited Partnership   McNeil Real Estate Fund XXIV, L.P.    2,988        2,988        0        2,988          0
High River Limited Partnership   McNeil Real Estate Fund XXV, L.P.     6,674,690    6,674,690    0        6,674,690      0
High River Limited Partnership   McNeil Real Estate Fund XXVI, L.P.    810,457      810,457      0        810,457        0
High River Limited Partnership   McNeil Real Estate Fund XXVII, L.P.   79,887       79,887       100,000  79,887         100,000


                                                                      A-1

<PAGE>





Riverdale LLC                    McNeil Real Estate Fund IX, Ltd.      13,088       0            13,088       0         13,088
Riverdale LLC                    McNeil Real Estate Fund X, Ltd.       9,539        0            9,539        0         9,539
Riverdale LLC                    McNeil Real Estate Fund XI, Ltd.      16,418.67    0            16,418.67    0         16,418.67
Riverdale LLC                    McNeil Real Estate Fund XIV, Ltd.     10,105       0            10,105       0         10,105
Riverdale LLC                    McNeil Real Estate Fund XV, Ltd.      9,761        0            9,761        0         9,761
Riverdale LLC                    McNeil Real Estate Fund XX, L.P.      5,084.938    0            5,084.938    0         5,084.938
Riverdale LLC                    McNeil Real Estate Fund XXIV, L.P.    2,988        0            2,988        0         2,988
Riverdale LLC                    McNeil Real Estate Fund XXV, L.P.     6,674,690    0            6,674,690    0         6,674,690
Riverdale LLC                    McNeil Real Estate Fund XXVI, L.P.    810,457      810,457      0            810,457   0
Riverdale LLC                    McNeil Real Estate Fund XXVII, L.P.   179,887      79,887       100,000      79,887    100,000


                                                                      A-2

<PAGE>





Carl C. Icahn                    McNeil Real Estate Fund IX, Ltd.      15,616       0            15,616       0         15,616
Carl C. Icahn                    McNeil Real Estate Fund X, Ltd.       11,836       0            11,836       0         11,836
Carl C. Icahn                    McNeil Real Estate Fund XI, Ltd.      18,621.67    0            18,621.67    0         18,621.67
Carl C. Icahn                    McNeil Real Estate Fund XIV, Ltd.     10,631       0            10,631       0         10,631
Carl C. Icahn                    McNeil Real Estate Fund XV, Ltd.      10,587       0            10,587       0         10,587
Carl C. Icahn                    McNeil Real Estate Fund XX, L.P.      6,486.372    0            6,486.372    0         6,486.372
Carl C. Icahn                    McNeil Real Estate Fund XXIV, L.P.    3,648        0            3,648        0         3,648
Carl C. Icahn                    McNeil Real Estate Fund XXV, L.P.     7,534,383    0            7,534,383    0         7,534,383
Carl C. Icahn                    McNeil Real Estate Fund XXVI, L.P.    886,960      0            886,960      0         886,960
Carl C. Icahn                    McNeil Real Estate Fund XXVII, L.P.   195,387      95,387       100,000      95,387    100,000

                                                                      A-3


<PAGE>





Unicorn Associates Corporation   McNeil Real Estate Fund IX, Ltd.      2,528        2,528        0            2,528     0
Unicorn Associates Corporation   McNeil Real Estate Fund X, Ltd.       2,297        2,297        0            2,297     0
Unicorn Associates Corporation   McNeil Real Estate Fund XI, Ltd.      2,203        2,203        0            2,203     0
Unicorn Associates Corporation   McNeil Real Estate Fund XIV, Ltd.     526          526          0            526       0
Unicorn Associates Corporation   McNeil Real Estate Fund XV, Ltd.      826          826          0            826       0
Unicorn Associates Corporation   McNeil Real Estate Fund XX, L.P.      1,401.434    1,401.434    0            1,401.434 0
Unicorn Associates Corporation   McNeil Real Estate Fund XXIV, L.P.    660          660          0            660       0
Unicorn Associates Corporation   McNeil Real Estate Fund XXV, L.P.     859,693      859,693      0            859,693   0
Unicorn Associates Corporation   McNeil Real Estate Fund XXVI, L.P.    76,503       76,503       0            76,503    0
Unicorn Associates Corporation   McNeil Real Estate Fund XXVII, L.P.   15,500       15,500       0            15,500    0
Longacre Corp.                   McNeil Real Estate Fund XII, Ltd.     10           10           0            10        0

                                                                      A-4

</TABLE>
<PAGE>





                                                                      ANNEX B

McNeil Investors, Inc.

McNeil Real Estate Management, Inc.

McNeil Partners, L.P.

McNeil Summerhill, Inc.

McNeil Partnerships:
- --------------------

McNeil Real Estate Fund IX, Ltd.  ("MREF IX")
McNeil Real Estate Fund X, Ltd.  ("MREF X")
McNeil Real Estate Fund XI, Ltd.   ("MREF XI")
McNeil Real Estate Fund XII, Ltd.   ("MREF XII")
McNeil Real Estate Fund XIV, Ltd.  ("MREF XIV")
McNeil Real Estate Fund XV, Ltd.  ("MREF XV")
McNeil Real Estate Fund XX, L.P.  ("MREF XX")
McNeil Real Estate Fund XXI, L.P.  ("MREF XXI")
McNeil Real Estate Fund XXII, L.P.  ("MREF XXII")
McNeil Real Estate Fund XXIII, L.P.  ("MREF XXIII")
McNeil Real Estate Fund XXIV, L.P. ("MREF XXIV")
McNeil Real Estate Fund XXV, L.P. ("MREF XXV")
McNeil Real Estate Fund XXVI, L.P. ("MREF XXVI")
McNeil Real Estate Fund XXVII, L.P. ("MREF XXVII")
Fairfax Associates II, Ltd.  ("Fairfax")
Hearth Hollow Associates, L.P. ("Hearth Hollow")
McNeil Midwest Properties I, L.P. ("Midwest Properties")
Regency North Associates, L.P. ("Regency North")
McNeil Summerhill I, L.P. ("Summerhill")

Subsidiary Corporations:
- -----------------------

McNeil Rolling Hills Fund IX Corp.
Cherry Hills Apartment Corp.
Forest Park IX Corp.
Lantern Tree Apartment Corp.
Meridian West Apartment Corp.
Rockborough Apartment Corp.
Williamsburg Fund IX Apartment Corp.
Briarwood Apartment Corp.
Coppermill Apartment Corp.
La Plaza Fund X Corp.
Orchard Apartment Corp.
Quail Meadows Apartment Corp.
Regency Apartment Corp. (Nevada)
Sandpiper Apartment Corp.

                                      B-1
<PAGE>

Spanish Apartments Fund X Corp.
Gentle Gale Apartment Corp.
Villa Del Rio Apartment Corp.
McNeil Village Apartments XI Corp.
McNeil Rock Creek Fund XI Corp.
Buccaneer Village Fund XII Corp.
Castle Bluff Corp.
Palisades Apartment Corp.
Plaza Westlake Corp.
Thunder Hollow Apartment Corp.
Windrock Fund XIV Corp.
Arrowhead Apartment Corp.
Mountain Shadows Apartment Corp.
Woodcreek Fund XV Corp.
Sterling Springs Apartment Corp.
Bedford Green Fund XXI Corp.
Breckenridge Apartment Corp.
Evergreen Apartment Corp.
Governours Square Apartment Corp.
Woodcreek Fund XXI Corp.
River Bay Plaza Corp.
Hearth Hollow Apartment Corp.
East Bay Apartment Corp.
Regency Apartment Corp. (Missouri)

Subsidiary Partnerships
- -----------------------

Subsidiaries of MREF IX
         Berkley Hills Associates (a general  partnership)
         Cherry Hills Fund IX Limited Partnership
         Forest Park Fund IX Associates Limited Partnership
         Lantern Tree Fund IX Limited Partnership
         Meridian West Fund IX Limited Partnership
         Pennbrook Fund IX  Associates,  L.P.
         Rockborough  Fund IX Limited Partnership
         Rolling Hills Fund IX Associates, L.P.
         Ruskin Place Fund IX Associates (a general partnership)
         Sherwood Forest Fund IX Associates (a general partnership)
         Williamsburg Fund IX Limited Partnership

Subsidiaries of MREF X
         Briarwood  Fund  X  Limited  Partnership
         Coppermill  Fund  X  Limited Partnership
         La Plaza Center Fund X, Limited  Partnership
         Orchard Fund X Limited  Partnership
         Quail Meadows Fund X Limited Partnership
         Regency Park Fund X  Associates,  L.P.
         Sandpiper Fund X  Limited  Partnership
         Spanish Fund X, Ltd.

Subsidiaries of MREF XI

                                      B-2
<PAGE>

         Acacia Lakes Fund XI Limited Partnership
         Gentle Gale Fund XI Limited Partnership
         Knollwood Fund XI Associates (a general partnership)
         Rock Creek Fund XI, Ltd.
         Sun Valley Fund XI Associates (a general partnership)
         Villa Del Rio Fund XI Limited Partnership
         Village Fund XI Associates Limited Partnership

Subsidiaries of MREF XII
         Brendon Way Fund XII Associates (a general partnership)
         Buccaneer Village Fund XII, Ltd.
         Castle Bluff Fund XII Associates, L.P.
         Palisades Fund XII Associates, L.P.
         Plaza Westlake Fund XII, Ltd.

Subsidiaries of MREF XIV
         Embarcadero Associates (a general partnership)
         Tanglewood Fund XIV Associates Limited Partnership
         Thunder Hollow Fund XIV Limited Partnership
         Windrock Fund XIV, L.P.

Subsidiaries of MREF XV
         Arrowhead Fund XV Limited Partnership
         McNeil Mountain Shadows Fund XV Limited Partnership
         Woodcreek Fund XV, Ltd.

Subsidiary of MREF XX
         Sterling Springs Fund XX Limited Partnership

Subsidiaries of MREF XXI
         Bedford Green Fund XXI, L.P.
         Breckenridge Fund XXI Limited Partnership
         Evergreen Fund XXI Limited Partnership
         Governours Square Fund XXI Limited Partnership
         Woodcreek Fund XXI, L.P.

Subsidiary of MREF XXII
         Harbour Club Associates Limited Partnership

Subsidiary of MREF XXIII
         Beckley Associates Limited Partnership

Subsidiaries of XXIV
         River Bay Plaza XXIV, L.P.

Subsidiary of MREF XXV
         Van Buren Associates Limited Partnership

Subsidiary of Hearth Hollow
         Hearth Hollow Apartments Limited Partnership

                                      B-3

<PAGE>

Subsidiaries of Midwest Properties
         Cedarwood Hills Associates (a general partnership)
         East Bay Village Apartments Limited Partnership

Subsidiary of Regency North
         Regency North Apartments Limited Partnership


                                      B-4

<PAGE>


                                                                        ANNEX C


                                  Estimated Per Unit              Minimum
Listed McNeil Partnership         Aggregate Amount                Amount
- ----------------------------     -------------------           --------------
McNeil Real Estate Fund IX          $    424                   $  381.60
McNeil Real Estate Fund X                234                      210.60
McNeil Real Estate Fund XI               221                      198.90
McNeil Real Estate Fund XIV              214                      181.90
McNeil Real Estate Fund XV               160                      136.00
McNeil Real Estate Fund XX                92                       73.60
McNeil Real Estate Fund XXIV             347                      294.95
McNeil Real Estate Fund XXV             0.50                        0.45
McNeil Real Estate Fund XXVI            0.27                        0.243
McNeil Real Estate Fund XXVII          10.54                        9.486

                                      C-1




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