<PAGE>
 
                                                                   EXHIBIT 10.10

                     THE POMONA FIRST FEDERAL BANK & TRUST
                RESTATED SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN
<PAGE>
 
                               TABLE OF CONTENTS
                               -----------------
<TABLE>

<S>                                                              <C> 
ARTICLE I.....................................................   2
    Purpose of the Plan.......................................   2

 
ARTICLE II....................................................   2
    Definitions...............................................   2
       2.1   Bank.............................................   2
             ----
       2.2   Board............................................   2
             -----
       2.3   Code.............................................   2
             ----
       2.4   Defined Benefit Plan.............................   2
             --------------------
       2.5   Eligible Employee................................   2
             -----------------
       2.6   Employee.........................................   2
             --------
       2.7   ERISA............................................   2
             -----
       2.8   ESOP.............................................   2
             ----
       2.9   Former Participant...............................   3
             ------------------
       2.10   Matching Contribution...........................   3
              ---------------------
       2.11   Nonqualified Plan...............................   3
              -----------------
       2.12   Participant.....................................   3
              -----------
       2.13   Period of Participation.........................   3
              -----------------------
       2.14   Retirement Benefit..............................   3
              ------------------
       2.15   Savings Plan....................................   3
              ------------
       2.16   SERP............................................   3
              ----
       2.17   Supplemental ESOP Benefit.......................   3
              -------------------------
       2.18   Supplemental Savings Plan Benefit...............   3
              ---------------------------------
       2.19   Termination of Service..........................   3
              ----------------------

ARTICLE III...................................................   4
    Participation.............................................   4
       3.1   Eligibility for Participation....................   4
             -----------------------------
       3.2   Supplemental Savings Plan Benefit Account........   4
             -----------------------------------------
       3.3   Commencement of Participation....................   5
             -----------------------------
       3.4   Termination of Participation.....................   5
             ----------------------------

ARTICLE IV....................................................   5
    Benefits to Participants..................................   5
       4.1   Supplemental Benefits.............................  5
             --------------------
       4.2   Benefits Under Previous Benefit Formulas.........   6
             ----------------------------------------
       4.3   Payment to Missing Person........................   6
             -------------------------
       4.4   Release from Liability...........................   7
             ----------------------
</TABLE>

                                       i
<PAGE>
 
                               TABLE OF CONTENTS
                               -----------------
<TABLE>

<S>                                                            <C>
ARTICLE V...................................................    7
---------
    Administration..........................................    7
            5.1   Duties of the Board.......................    7
                  -------------------
            5.2   Liabilities of the Board..................    7
                  ------------------------
            5.3   Expenses..................................    7
                  --------
            5.4   Unfunded Character of Plan................    8
                  --------------------------
 
ARTICLE VI..................................................    8
----------
    Amendment and Termination...............................    8
            6.1   Amendment and Termination.................    8
                  -------------------------
            6.2   Vesting and Payment Upon Termination......    8
                  ------------------------------------
            6.3   Preservation of Benefits on Amendment.....    8
                  -------------------------------------

ARTICLE VII.................................................    9
-----------
    Miscellaneous Provisions................................    9
            7.1   Governing Law.............................    9
                  -------------
            7.2   No Right to Continued Employment..........    9
                  --------------------------------
            7.3   Construction of Language..................    9
                  ------------------------
            7.4   Non-alienation of Benefits................    9
                  --------------------------
            7.5   Operation as Unfunded Nonqualified Plan...    9
                  ---------------------------------------
            7.6   Reliance Upon Information.................   10
                  -------------------------
            7.7   Effective Date............................   10
                  --------------
</TABLE>

                                      ii
<PAGE>
 
                     THE POMONA FIRST FEDERAL BANK & TRUST
                RESTATED SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

     WHEREAS, the employees of the Pomona First Federal Bank & Trust ("Bank")
are provided with benefits under the Pomona First Federal Bank & Trust
Employees' Pension Plan ("Defined Benefit Plan"), the Pomona First Federal Bank
& Trust Capital Accumulation Plan ("Savings Plan") and the Pomona First Federal
Bank & Trust Employee Stock Ownership Plan ("ESOP"); and

     WHEREAS, the Internal Revenue Code of 1986, as amended ("Code") imposes
limitations on the level of retirement income which may be provided to
Participants under the Defined Benefit Plan, the level of savings which may be
contributed by Participants to the Savings Plan, the amount of contributions
that may be made to the ESOP by the Bank on the behalf of Participants, and
limits the amount of compensation which may be considered in determining
benefits under all of these plans; and

     WHEREAS, the Board of Directors of the Bank desires to restate the plan to
provide certain employees with benefits to replace benefits to which they would
be entitled but for the application of the limitations imposed by the Code;

     THEREFORE, by resolution of the Board of Directors, the Supplemental
Executive Retirement Plan has been restated.

                                       1
<PAGE>
 
                                   ARTICLE I

                              Purpose of the Plan
                              -------------------

     The purpose of the Pomona First Federal Bank & Trust Supplemental Executive
Retirement Plan ("SERP") is to provide designated executives of the Bank with
deferred benefits to which they would otherwise be entitled under the terms of
the Defined Benefit Plan, the Savings Plan and the ESOP, but for limitations on
benefits and includible compensation imposed by the Code. The benefits will be
paid out of the Bank's general assets exclusively.

                                   ARTICLE II

                                  Definitions
                                  -----------

     Wherever appropriate to the purposes of the SERP, capitalized terms shall
have the meanings assigned to them under the Defined Benefit Plan, the Savings
Plan and the ESOP. Notwithstanding the preceding, the following definitions
shall apply for the purposes of this SERP unless a different meaning is clearly
indicated by the context.

     2.1 Bank means Pomona First Federal Bank & Trust having its principal
         ----                                                            
     office as 350 South Garey Avenue, Pomona California 91766 and its
     successors or assigns.

     2.2 Board means the Board of Directors of the Bank.
         -----                                         

     2.3 Code means the Internal Revenue Code of 1986, as amended from time to
         ----                                                               
     time (including the corresponding provisions of any succeeding law).

     2.4 Defined Benefit Plan means the Pomona First Federal Bank & Trust
         --------------------                                           
     Employees' Pension Plan, as may be amended from time to time (including the
     corresponding provisions of any successor qualified defined benefit plan
     adopted by the Bank).

     2.5 Eligible Employee means an Employee who is eligible for participation
         -----------------                                                   
     in the SERP in accordance with the provisions of Article III.

     2.6 Employee means any person, including an officer, who is employed by the
         --------                                                              
     Bank.

     2.7 ERISA means the Employee Retirement Income Security Act of 1974, as
         -----                                                             
     amended from time to time (including the corresponding provisions of any
     succeeding law).

     2.8 ESOP means the Pomona First Federal Bank & Trust Employee Stock
         ----                                                          
     Ownership Plan.

                                       2
<PAGE>
 
     2.9  Former Participant means a person whose participation in the SERP has
          ------------------                                                  
     terminated as provided under Section 3.4.

     2.10 Matching Contribution means an amount equal to the product of (i) the
          ---------------------                                               
     amount such Participant is contributing to the SERP under Section 3.2
     subject to any limitation on Employer Matching Contributions under the
     Savings Plan and (ii) the percentage of the Employer Match being made under
     the Savings Plan during the same period.

     2.11 Nonqualified Plan means a plan of deferred compensation which does not
          -----------------                                                    
     meet the requirements of Section 401(a) of the Code.

     2.12 Participant means any person who is participating in the SERP in
          -----------                                                    
     accordance with its terms.

     2.13 Period of Participation means the period during which a person is a
          -----------------------                                           
     Participant.

     2.14 Retirement Benefit means the benefit payable to a Participant pursuant
          ------------------                                                   
     to the terms of the Defined Benefit Plan.

     2.15 Savings Plan means the Pomona First Federal Bank & Trust Capital
          ------------                                                   
     Accumulation Plan, as may be amended from time to time (including the
     corresponding provisions of any successor qualified savings plan adopted by
     the Bank).

     2.16 SERP means this Pomona First Federal Bank & Trust Restated
          ----                                                     
     Supplemental Executive Retirement Plan as amended from time to time.

     2.17 Supplemental ESOP Benefit means the benefit provided by this SERP
          -------------------------                                       
     based on limitations, imposed by Sections 401(a)(17) and/or 415 of the
     Code, on the benefits of a Participant under the ESOP. Such benefit equals
     the positive difference between the number of shares allocated to a
     Participant under the ESOP and the number which would have been allocated
     under the ESOP at that time except for the operation of the limitations of
     the Code.

     2.18 Supplemental Savings Plan Benefit means the benefit provided by this
          ---------------------------------                                  
     SERP based on limitations, imposed by the Code, on the level of savings
     which may be contributed by Participants under the Savings Plan. In
     particular, the Supplemental Savings Plan Benefit shall be a benefit equal
     to the amount contributed to the Bank by the Participants and the Bank, and
     earnings thereon, both in accordance with Section 3.2 of this SERP.

     2.19 Termination of Service means an Employee's separation from the service
          ----------------------                                               
     of the Bank, whether by resignation, discharge, death, disability,
     retirement or otherwise.

                                       3
<PAGE>
 
                                  ARTICLE III
                                  -----------

                                 Participation
                                 -------------

     3.1 Eligibility for Participation.
         -----------------------------
         Only Eligible Employees may be or may become Participants.

     (a)  An Employee shall become an Eligible Employee for Supplemental
     Savings Plan Benefits if:

          (1) The Board, in its sole discretion, designates him as an Eligible
          Employee; and

          (2) He is a Member of the Savings Plan and his benefits thereunder
          would be limited by Sections 401 (m), 401 (a)(17) and/or 415 of the
          Code if maximum contributions were desired; and

          (3) He elects to participate in the Savings Plan; and

          (4) He deposits with the Bank, for credit to his Supplemental Savings
          Plan Benefit Account, the amount defined in Section 3.2.

     (b)  An Employee shall become an Eligible Employee for Supplemental ESOP
     Benefits if:

          (1) The Board, in its sole discretion, designates him as an Eligible
          Employee; and

          (2) He is a Participant in the ESOP and his benefits thereunder are
          limited by the application of Sections 401(a)(17) and/or 415 of the
          Code.

     3.2  Supplemental Savings Plan Benefit Account
          -----------------------------------------

     The Bank will accept deferrals of compensation from each Participant who is
an Eligible Employee pursuant to Section 3.1 (a) and who elects to participate
in the SERP. Each such Eligible Employee may make annual deferrals of
compensation in an amount equal to the difference between (i) the maximum amount
the Participant would be permitted to contribute to the Savings Plan for the
given year but for the limitations of Sections 401 (m), 401(a)(17), 415, or any
other Section of the Code and (ii) deferrals actually made to the Savings Plan.
Amounts returned from the Savings Plan because of any discrimination testing or
other limitations on contributions will be deferred into this SERP without
further action on the Participant being required, to the extent such deferral is
permitted under applicable law. If such deferral is not permitted, Participant's
election will run to other Compensation in an amount equal to such returned
monies. The Bank will establish a memorandum account, maintained as a
Supplemental Savings Plan Benefit Account for such Participant on the

     

                                       4
<PAGE>
 
Bank's books, which will be credited with the amount of such contributions. The
Supplemental Savings Plan Benefit Accounts are not insured by the Federal
Deposit Insurance Corporation and shall be considered an asset of the Bank
subject to the claims of general creditors.

     Amounts credited to a Participant's Supplemental Savings Plan Benefit
Account shall be credited with interest at a rate equal to the combined weighted
return provided to the Participant's Account under the Savings Plan. Such
interest shall be credited monthly. The Bank will credit the Participant's
Supplemental Savings Plan Benefits Account with the Matching Contribution when
otherwise due under the Savings Plan.

     3.3 Commencement of Participation.
         -----------------------------

      An Eligible Employee shall become a Participant on the date determined by
the Board. However, in no event will an Employee become a Participant prior to
January 1, 1996.

     3.4 Termination of Participation.
         ----------------------------

      Participation in the Plan shall cease on the: (a) date of the
Participant's Termination of Service; or (b) date on which he ceases to be an
Eligible Employee.

                                   ARTICLE IV
                                   ----------

                         Benefits to Participants
                         ------------------------

       4.1  Supplemental Benefits.
            ---------------------
       (a) A Participant who satisfies Section 3.l(a) shall be entitled to an
       unfunded, unsecured promise from the Bank of Supplemental Savings Plan
       Benefits.

       (b) A Participant who satisfies Section 3.l(b) of the SERP shall be
       entitled to an unfunded, unsecured promise from the Bank of Supplemental
       ESOP Benefits.

       (c) The Supplemental Savings Plan Benefit provided for in Section 3.1(a)
       shall be paid commencing upon Termination of Service to the Participant
       or his designated beneficiary in the manner and for the period as the
       Participant shall have elected with respect to his benefit under the
       Savings Plan.

       (d) Participants shall be vested in the benefits payable under Section
       3.1(a), in the same percentage that they are vested in benefits payable
       under the Savings Plan.

       (e) A Participant shall be vested in benefits payable under Section
       3.1(b) of this SERP in the same percentage that such Participant has a
       vested interest in his account under the ESOP.

                                       5
<PAGE>
 
     (f)    The Supplemental ESOP Benefit provided for in Section 3.1 (b) shall
     be paid commencing upon Termination of Service to the Participant or his
     designated beneficiary in the manner and for the period as the Participant
     shall have elected with respect to his benefit under the ESOP.

     4.2    Benefits Under Previous Benefit Formulas
            ----------------------------------------

     (a)    A Participant shall be vested in the actuarial present value of
     benefits accrued by him under this SERP under the previous defined benefit
     formula as of January 1, 1996. Such benefit ("DB Benefit") shall be
     calculated by an enrolled actuary and each Participant shall be notified of
     the value of such benefit as soon as administratively feasible after
     January 1, 1996.

     (b)    An amount equal to the DB Benefit (and subsequent earnings thereon)
     shall be credited with interest for each calendar year. The amount of
     interest shall be determined according to one of two methods as elected by
     the Participant in writing and in a form and at a time acceptable to the
     Board. The methods which may be chosen are either interest as determined:

           (i)  using a percentage rate and method of calculation which is the
                same as the maximum yield which is paid by the Bank to its
                general deposit base with respect to any account offered by the
                Bank as of the beginning of each calendar quarter and adjusted
                quarterly thereafter, or

           (ii) using a percentage rate which is the same as the percentage
                increase or decrease in the closing price of a share of Common
                Stock of PFF Bancorp, Inc. as such closing price is reported in
                the Wall Street Journal, from the first day to the last day of
                the period for which interest is being credited.

     (c)    Benefits under this sub-section 4.2 shall be paid in the manner and
     at the same time as the benefits provided for in section 4. l(c) regarding
     the Supplemental Savings Plan Benefit.

     4.3    Payment to Missing Person.
            -------------------------

     If the Bank is unable to effect delivery of any amount payable hereunder to
the person entitled thereto, or upon his death, to his personal representative,
it shall so advise the Board and the Board shall give written notice to such
person at his last known address as shown in such Participant's record of
employment. If such person or his personal representative does not present
himself to the Board after three years from the date of mailing such notice,
then the Board shall direct such amount, including any amount thereafter
becoming due to such person or his personal representative to be distributed in
the manner provided herein with respect to the death of a Participant. If there
is no valid designation of Beneficiary on file;

                                       6
<PAGE>
 
or, if there can be no distribution under the foregoing provision, the same
shall be treated as a forfeiture in accordance with the provisions hereof.

     4.4 Release from Liability.
         ----------------------

     Payment to any Participant, legal representative or Beneficiary, in
accordance with the provisions of this Plan, is deemed to be in full
satisfaction of all claims by the Participant, representative or Beneficiary
against this SERP, the Board, and the Bank. The Board may require such
Participant, legal representative, or Beneficiary as a condition precedent to
payment to execute a receipt and release in such form as shall be determined by
the Board.

                                   ARTICLE V
                                   ---------

                                Administration
                                --------------

     5.1  Duties of the Board.
          -------------------

     The Board shall have full responsibility for the management, operation,
interpretation and administration of the Plan in accordance with its terms, and
shall have such authority as is necessary or appropriate in carrying out its
responsibilities. Actions taken by the Board pursuant to this Section 5.1 shall
be conclusive and binding upon the Bank, Participants, Former Participants,
Beneficiaries, and other interested parties. The Board may delegate any duties
to persons of its choosing.

     5.2  Liabilities of the Board.
          ------------------------

     Neither the Board nor its individual members shall be deemed to be a
fiduciary with respect to this Plan; nor shall any of the foregoing individuals
or entities be liable to any Participants, Former Participants or Beneficiaries
in connection with the management, operation, interpretation or administration
of the Plan, any such liability being solely that of the Bank.

     5.3  Expenses.
          --------

     Any expenses incurred in the management, operation, interpretation or
administration of the Plan shall be paid by the Bank. In no event shall the
benefits otherwise payable under this Plan be reduced to offset the expenses
incurred in managing, operating, interpreting or administering the Plan.

                                       7
<PAGE>
 
     5.4 Unfunded Character of Plan.
         --------------------------

     The SERP shall be unfunded. Neither the Bank nor the Board nor its
individual members shall segregate or otherwise identify specific assets to be
applied to the purposes of the Plan, nor shall any of them be deemed to be a
trustee of any amounts to be paid under the Plan. Any liability of the Bank to
any person with respect to benefits payable under the Plan shall be based solely
upon such contractual obligations, if any, as shall be created by the Plan, and
shall give rise only to a claim against the general assets of the Bank. No such
liability shall be deemed to be secured by any pledge or any other encumbrance
on any specific property of the Bank.

                                   ARTICLE VI
                                   ----------

                           Amendment and Termination
                           -------------------------

     6.1 Amendment and Termination.
         -------------------------

     Subject to the provisions of Sections 6.2 and 6.3, the Board shall have
the right to amend or terminate the Plan, in whole or in part.

     6.2 Vesting and Payment Upon Termination.
         ------------------------------------

         (a) In the event of the termination or partial termination of this
         SERP, the rights of all affected parties, if any, to any benefits
         accrued to the date of such termination or partial termination, shall
         become nonforfeitable.

         (b) In the event of the termination of this SERP all benefit shall be
         immediately payable to the Participant by the Bank in whatever form the
         SERP otherwise provides, or in the discretion of the Board may be paid
         in a lump sum payment of the present value as determined in accordance
         with the assumptions and methodology of Section 7520 of the Code.

     6.3 Preservation of Benefits on Amendment.
         -------------------------------------

     No amendment of this SERP shall reduce the vested and accrued benefits, if
any, of a Participant under this SERP.

                                       8
<PAGE>
 
                                  ARTICLE VII
                                  -----------

                           Miscellaneous Provisions
                            ------------------------

     7.1 Governing Law.
         -------------

     The SERP shall be construed, administered, and enforced according to laws
of the State of California, except to the extent that such laws are pre-empted
by the federal laws of the United States of America.

     7.2 No Right to Continued Employment.
         --------------------------------

     Neither the establishment of the SERP nor any provisions of the SERP, nor
any action of the Board shall be held or construed to confer upon any Employee
the right to a continuation of employment by the Bank. Subject to any employment
contract or Change in Control Agreement, the Bank reserves the right to dismiss
any Employee or otherwise deal with any Employee to the same extent as though
the SERP had not been adopted.

     7.3 Construction of Language.
         ------------------------

     Wherever appropriate in the SERP, words used in the singular may be read in
the plural, words in the plural may be read in the singular, and words importing
the masculine gender shall be deemed equally to refer to the feminine and the
neuter. Any reference to any Article or Section shall be to an Article or
Section of this SERP, unless otherwise indicated.

     7.4 Non-alienation of Benefits.
         --------------------------

     The right to receive a benefit under the SERP shall not be subject in any
manner to anticipation, alienation, or assignment, nor shall such right be
liable for or subject to debts, contracts, liabilities. Should any Participants,
Former Participants, Beneficiaries or other person attempt to anticipate,
alienate or assign his interest in or right to a benefit, or should any person
claiming against him seem to subject such interest or right to legal or
equitable process, all the interest or right of such Participants or Former
Participants, Beneficiaries or other person entitled to benefits under the SERP
shall cease, and in that event, such interest or right shall be held or applied,
at the direction of the Board, for or to the benefit of such Participants,
Former Participants, Beneficiaries or other person or his spouse, children or
other dependents in such manner and in such proportions as the Board may deem
proper.

     7.5 Operation as Unfunded Nonqualified Plan.
         ---------------------------------------

     The SERP is intended to be an unfunded, nonqualified plan maintained
primarily for the purpose of providing deferred compensation for a select group
of management or highly compensated employees. The SERP is not intended to
comply with the requirements of Section 401(a) of the Code. The SERP shall be
administered and construed so as to effectuate this intent.

 

                                       9
<PAGE>
 
     7.6 Reliance Upon Information
         -------------------------

     The Board shall not be liable for any decision or action taken in good
faith in connection with the administration of the SERP. Without limiting the
generality of the foregoing, any such decision or action taken by the Board in
reliance upon any information supplied to them by an officer of the Bank, the
Bank's legal counsel, or the Bank's independent accountants in connection with
the administration of the SERP shall be deemed to have been taken in good faith.

     7.7 Effective Date
         --------------

     The SERP shall become effective January 1, 1996.

                                       10
<PAGE>
 
       Executed at Pomona, California on the 15th day of July, 1996.

                                         POMONA FIRST FEDERAL BANK & TRUST

                                           
                                 By  /s/ Larry M. Rinehart
                                    --------------------------------------
                       
                                 Title President/CEO
                                       -----------------------------------
 

                                       11