EXHIBIT 10.1

                    FOURTH AMENDMENT TO EMPLOYMENT AGREEMENT



         This Fourth  Amendment (the "Fourth  Amendment")  executed  January 19,
2007 to the Employment  Agreement (the "Agreement")  between Acadia Realty Trust
(the "Trust") and Kenneth F. Bernstein ("Executive").

         WHEREAS,  the Trust and Executive entered into an Employment  Agreement
dated as of October , 1998 (the "Employment Agreement"); and

         WHEREAS,  the  Employment  Agreement  was amended by a First  Amendment
dated as of January 1, 2001, a Second  Amendment dated as of January 1, 2004 and
a Third Amendment dated as of January 1, 2006; and

         WHEREAS, the Trust and Executive desire to further amend the Employment
Agreement.

         NOW,  THEREFORE,  in consideration  of the mutual  covenants  contained
herein and for other good and valuable consideration  including the continuation
of  employment  by the Trust,  the  receipt and  sufficiency  of which is hereby
acknowledged, the Trust and Executive hereby agree as follows:

         1. DEFINITIONS. Terms not defined herein have the meanings set forth in
the Agreement.

         a) The  definition  of "Cause" is hereby  deleted and the  following is
hereby substituted therefor:

                  CAUSE. The Trust shall have the right to terminate Executive's
                  employment   for  Cause  upon   Executive's:   (A)  deliberate
                  misrepresentation  in connection  with, or willful  failure to
                  cooperate  with  a  bona  fide  internal  investigation  or an
                  investigation  by regulatory or law  enforcement  authorities,
                  after being  instructed  by the Company to  cooperate,  or the
                  willful  destruction or failure to preserve documents or other
                  materials  known to be relevant to such  investigation  or the
                  willful  inducement  of  others  to  fail to  cooperate  or to
                  produce  documents or other materials;  (B) failure to perform
                  his duties  hereunder  (other than any such failure  resulting
                  from Executive's incapacity due to physical or mental illness)
                  which  failure  continues  for a period of three (3)  business
                  days after written demand for  corrective  action is delivered
                  by the Trust specifically  identifying the manner in which the
                  Trust believes the Executive has not performed his duties; (C)
                  conduct  by  the  Executive  constituting  a  material  act of
                  willful  misconduct in connection  with the performance of his
                  duties,  including,  without  limitation,  misappropriation of
                  funds or  property  of the Trust  other  than the  occasional,
                  customary  and de minimis use of Trust  property  for personal
                  purposes;  (D)  disparagement  of  the  Trust,  its  officers,
                  trustees,  employees or partners;  (E) soliciting any existing
                  employee  of the Trust  above  the level of an  administrative
                  assistant to work at another company; or (F) the commission by
                  the  Executive  of a felony  or  misdemeanor  involving  moral
                  turpitude, deceit, dishonesty or fraud,


         b) The  definition  of "Change of Control" is hereby  deleted,  thereby
specifically  deleting the two  sentences set forth in said  definition  wherein
Executive has the right  voluntarily to terminate  employment on or within three
(3) months  following a Change in Control and to have said termination be deemed
a termination for Good Reason, and the following is hereby substituted therefor:

                  CHANGE IN CONTROL.  For purposes of this Agreement  "Change in
                  Control"  shall  mean  that any of the  following  events  has
                  occurred:  (A) any  "person"  or "group" of  persons,  as such
                  terms  are  used  in  Sections  13 and  14 of  the  Securities
                  Exchange Act of 1934, as amended (the "Exchange  Act"),  other
                  than any employee benefit plan sponsored by the Trust, becomes
                  the "beneficial  owner", as such term is used in Section 13 of
                  the  Exchange  Act  (irrespective  of any  vesting  or waiting
                  periods)  of (i)  Common  Shares in an amount  equal to thirty
                  percent  (30 %) or more of the sum total of the Common  Shares
                  issued and outstanding  immediately  prior to such acquisition
                  as if they were a single  class and  disregarding  any  equity
                  raise in connection  with the  financing of such  transaction;
                  provided,  however,  that in  determining  whether a Change of
                  Control has occurred,  Outstanding Shares or Voting Securities
                  which are acquired in an  acquisition  by (i) the Trust or any
                  of its  subsidiaries  or (ii) an employee  benefit  plan (or a
                  trust forming a part  thereof)  maintained by the Trust or any
                  of its subsidiaries  shall not constitute an acquisition which
                  can  cause a Change of  Control;  or (B) the  approval  of the
                  dissolution or  liquidation of the Trust;  or (C) the approval
                  of the sale or other  disposition of all or substantially  all
                  of its  assets  in  one  (1) or  more  transactions;  or (D) a
                  turnover,  during any two (2) year period,  of the majority of
                  the members of the Board,  without the consent of the majority
                  of the members of the Board as to the  appointment  of the new
                  Board members.

         c) The  definition of "Good Reason" is hereby deleted and the following
is substituted therefor:

                  GOOD REASON.  The Executive  shall have the right to terminate
                  his employment  for "Good Reason":  (A) upon the occurrence of
                  any material breach of this Agreement by the Trust which shall
                  include but not be limited to: a material,  adverse alteration
                  in the  nature  of  Executive's  duties,  responsibilities  or
                  authority;  (B) upon a reduction  in  Executive's  Annual Base
                  Salary or a material  reduction in other benefits  (except for
                  bonuses or similar discretionary payments) as in effect at the
                  time in  question,  or a failure to pay such  amounts when due
                  which is not cured by the  Trust  within  ten (10) days  after
                  written  notice of such default by the  Executive,  (C) if the
                  Trust relocates  Executive's office requiring the Executive to
                  increase his commuting  time by more than one (1) hour, or (D)
                  the Trust's  failure to provide  benefits  comparable to those
                  provided the  Executive as of the Effective  Date,  other than
                  any  such  failure  which  affects  all  comparably   situated
                  officers, then the Executive shall have the right to terminate
                  his  employment,  which  termination  shall be deemed for Good
                  Reason.


         2.  CHANGE  OF  CONTROL.   Notwithstanding  anything  to  the  contrary
contained in the Employment Agreement,  Executive shall have no right to receive
the compensation described in Section 3 following a Change of Control unless the
Trust terminates  Executive's  employment without Cause or Executive  terminates
his employment for Good Reason,  in which event the Executive  shall be entitled
to all the  benefits  described  in the  Employment  Agreement as if this Fourth
Amendment were not executed.

         3.  EFFECTIVE  DATE.  This Fourth  Amendment  shall be  effective as of
December 31, 2006.

         4. SUCCESSORS; COUNTERPARTS. This Fourth Amendment (i) shall be binding
on the executors,  administrators,  estates,  heirs and legal  successors of the
parties and (ii) may be executed in several counterparts with the same effect as
if  the  parties  executing  the  several  counterparts  had  all  executed  one
counterpart.

         5.  GOVERNING  LAW.  This  Fourth  Amendment  shall be  governed by and
construed in  accordance  with the laws of the State of New York without  giving
effect to the principles of conflict of laws thereof.

         IN WITNESS  WHEREOF,  the undersigned have hereto set their hands as of
the day and year first above written.

                                       ACADIA REALTY TRUST


                                       By: /S/ ROBERT MASTERS
                                       --------------------------------------
                                       Robert Masters, Senior Vice President


                                       By: /S/ KENNETH F. BERNSTEIN
                                       --------------------------------------
                                       Kenneth F. Bernstein, Executive