EXHIBIT 99.1








RP FINANCIAL, LC.
- ---------------------------------------
Financial Services Industry Consultants



                                        April 2, 1998


Mr. Eugene G. Stone
President and Chief Executive Officer
Summit Bank
81 Main Street
Medway, Massachusetts 02053-1867

Dear Mr. Stone:

     This  letter  sets  forth  the  agreement  between  Summit  Bank,   Medway,
Massachusetts  ("Summit" or the "Bank"), and RP Financial,  LC. ("RP Financial")
for the independent  appraisal services  pertaining to the Bank's minority stock
offering in conjunction  with the mutual  holding  company  reorganization.  The
specific  appraisal services to be rendered by RP Financial are described below.
These  appraisal  services  will be  rendered  by a team of two to three  senior
consultants on staff and will be directed by the undersigned.


Description of Conversion Appraisal Services
- --------------------------------------------

     Prior to  preparing  the  valuation  report,  RP  Financial  will conduct a
financial due diligence,  including on-site  interviews of senior management and
reviews of financial and other  documents and records,  to gain insight into the
Bank's operations,  financial condition,  profitability,  market area, risks and
various  internal and external  factors  which impact the pro forma value of the
Bank. RP Financial will prepare a written  detailed  valuation  report of Summit
which  will be  fully  consistent  with  applicable  regulatory  guidelines  and
standard pro forma  valuation  practices.  The appraisal  report will include an
in-depth analysis of the Bank's financial  condition and operating  results,  as
well as an  assessment  of the  Bank's  interest  rate  risk,  credit  risk  and
liquidity  risk.  The  appraisal   report  will  describe  the  Bank's  business
strategies,  market  area,  prospects  for the  future and the  intended  use of
proceeds both in the short term and over the longer term. A peer group  analysis
relative to  publicly-traded  savings  institutions  will be  conducted  for the
purpose of determining  appropriate valuation adjustments relative to the group.
We will review pertinent  sections of the applications and offering documents to
obtain necessary data and information for the appraisal, including the impact of
key deal  elements  on the  appraised  value,  such as dividend  policy,  use of
proceeds   and   reinvestment   rate,   tax  rate,   conversion   expenses   and
characteristics  of stock  plans.  The  appraisal  report will  conclude  with a
midpoint pro forma value which will  establish  the range of value,  and reflect
the minority stock offering size determined by the Bank's Board of Trustees. The
appraisal report may be periodically  updated  throughout the conversion process
and there will be at least one  updated  valuation  prepared  at the time of the
closing of the stock offering.

     RP  Financial  agrees to deliver the  valuation  appraisal  and  subsequent
updates,  in writing,  to Summit at the above  address in  conjunction  with the
filing of the regulatory application.  Subsequent updates will be filed promptly
as certain events occur which would warrant the  preparation  and filing of such
valuation updates.  Further,  RP Financial agrees to perform such other services
as are necessary or required in  connection  with the  regulatory  review of the
appraisal  and  respond  to the  regulatory  comments,  if  any,  regarding  the
valuation appraisal and subsequent updates.


- --------------------------------------------------------------------------------
Washington Headquarters
Rosslyn Center
1700 North Moore Street, Suite 2210                    Telephone: (703) 528-1700
Arlington, VA 22209                                      Fax No.: (703) 528-1788



RP Financial, LC.
Mr. Eugene G. Stone
April 2, 1998
Page 2


Fee Structure and Payment Schedule
- ----------------------------------

     Summit  agrees  to pay RP  Financial  a  fixed  fee of  $20,000  for  these
appraisal services,  plus reimbursable expenses.  Payment of these fees shall be
made according to the following schedule:

     o    $5,000  upon  execution  of  the  letter  of  agreement   engaging  RP
          Financial's appraisal services;

     o    $12,500 upon delivery of the completed original appraisal report; and

     o    $2,500  upon  completion  of the  conversion  to cover all  subsequent
          valuation updates that may be required,  provided that the transaction
          is not delayed for reasons described below.

     The Bank will reimburse RP Financial for out-of-pocket expenses incurred in
the preparation of the appraisal report. Such out-of-pocket expenses,  which are
not expected to exceed  $5,000  inclusive of expenses for the business  plan and
appraisal,  will  include  travel,  telephone,   facsimile,  copying,  shipping,
computer  and data.  RP Financial  will make all attempts to keep  out-of-pocket
expenses to a minimum.

     In the  event  Summit  shall,  for any  reason,  discontinue  the  proposed
conversion  prior to delivery  of the  completed  documents  set forth above and
payment of the respective  progress payment fees, Summit agrees to compensate RP
Financial  according to RP  Financial's  standard  billing rates for  consulting
services based on accumulated  and verifiable  time expenses,  not to exceed the
respective  fee caps  noted  above,  after  giving  full  credit to the  initial
retainer fee. RP Financial's  standard billing rates range from $75 per hour for
research associates to $250 per hour for managing directors.

     If during the course of the proposed  transaction,  unforeseen events occur
so as to  materially  change  the  nature or the work  content  of the  services
described  in this  contract,  the terms of said  contract  shall be  subject to
renegotiation by Summit and RP Financial.  Such unforeseen events shall include,
but not be limited to, major changes in the  conversion  regulations,  appraisal
guidelines or processing procedures as they relate to appraisals,  major changes
in management or procedures,  operating policies or philosophies,  and excessive
delays or suspension of processing of conversion  applications by the regulators
such that completion of the transaction requires the preparation by RP Financial
of a new appraisal or financial projections.


Representations and Warranties
- ------------------------------

     Summit and RP Financial agree to the following:

     1. The Bank  agrees to make  available  or to supply to RP  Financial  such
information with respect to its business and financial condition as RP Financial
may  reasonably  request  in order to  provide  the  aforesaid  valuation.  Such
information  heretofore or hereafter  supplied or made available to RP Financial
shall include:  annual financial  statements,  periodic  regulatory  filings and
material agreements, debt instruments, off balance sheet assets or liabilities,



RP Financial, LC.
Mr. Eugene G. Stone
April 2, 1998
Page 3


commitments and  contingencies,  unrealized  gains or losses and corporate books
and records.  All information  provided by the Bank to RP Financial shall remain
strictly  confidential  (unless such  information is otherwise made available to
the  public),  and if  conversion  is not  consummated  or  the  services  of RP
Financial are terminated  hereunder,  RP Financial  shall upon request  promptly
return to the Bank the original and any copies of such information.

     2. The  Bank  hereby  represents  and  warrants  to RP  Financial  that any
information  provided to RP Financial  does not and will not, to the best of the
Bank's  knowledge,  at the times it is  provided  to RP  Financial,  contain any
untrue  statement of a material fact or fail to state a material fact  necessary
to make  the  statements  therein  not  false  or  misleading  in  light  of the
circumstances under which they were made.

     3.  (a) The  Bank  agrees  that it will  indemnify  and  hold  harmless  RP
Financial, any affiliates of RP Financial,  the respective directors,  officers,
agents and employees of RP Financial or their successors and assigns who act for
or on behalf of RP Financial in  connection  with the services  called for under
this agreement (hereinafter referred to as "RP Financial"), from and against any
and all losses, claims, damages and liabilities (including,  but not limited to,
all losses and expenses in connection  with claims under the federal  securities
laws)  attributable to (i) any untrue statement or alleged untrue statement of a
material  fact  contained  in the  financial  statements  or  other  information
furnished or otherwise provided by the Bank to RP Financial, either orally or in
writing;  (ii) the  omission  or alleged  omission  of a material  fact from the
financial statements or other information  furnished or otherwise made available
by the Bank to RP Financial; or (iii) any action or omission to act by the Bank,
or the Bank's respective officers,  directors,  employees or agents which action
or omission is in bad faith or  negligent.  The Bank will be under no obligation
to indemnify RP Financial  hereunder if a court determines that RP Financial was
negligent  or acted in bad faith with  respect to any actions or omissions of RP
Financial related to a matter for which indemnification is sought hereunder. Any
time  devoted  by  employees   of  RP   Financial   to   situations   for  which
indemnification is provided hereunder, shall be an indemnifiable cost payable by
the Bank at the normal hourly professional rate chargeable by such employee.

          (b) RP Financial  shall give written  notice to the Bank of such claim
     or facts within  thirty days of the  assertion of any claim or discovery of
     material  facts  upon  which the RP  Financial  intends to base a claim for
     indemnification  hereunder. In the event the Bank elects, within seven days
     of the receipt of the  original  notice  thereof,  to contest such claim by
     written  notice to RP Financial,  RP Financial  will be entitled to be paid
     any amounts payable by the Bank hereunder  within five days after the final
     determination of such contest either by written acknowledgement of the Bank
     or a final judgment of a court of competent jurisdiction.  If the Bank does
     not so elect,  RP Financial  shall be paid promptly and in any event within
     thirty days after receipt by the Bank of the notice of the claim.

          (c) The Bank  shall  pay for or  reimburse  the  reasonable  expenses,
     including attorneys' fees, incurred by RP Financial in advance of the final
     disposition  of any  proceeding  within  thirty days of the receipt of such
     request if RP Financial  furnishes the Bank: (1)ya written  statement of RP
     Financial's  good  faith  belief  that it is  entitled  to  indemnification
     hereunder;  and  (2)ya  written  undertaking  to repay  the  advance  if it
     ultimately is determined in a final adjudication of such proceeding that it
     or he is not entitled to such indemnification.



RP Financial, LC.
Mr. Eugene G. Stone
April 2, 1998
Page 4


          (d) In the event the Bank  does not pay any  indemnified  loss or make
     advance  reimbursements  of expenses in  accordance  with the terms of this
     agreement,  RP  Financial  shall have all  remedies  available at law or in
     equity to enforce such obligation.

     It is understood  that, in connection  with RP Financial's  above-mentioned
engagement,  RP Financial may also be engaged to act for the Bank in one or more
additional  capacities,  and that the terms of the  original  engagement  may be
embodied in one or more  separate  agreements.  The  provisions  of  Paragraph 3
herein shall apply to the original engagement,  any such additional  engagement,
any  modification of the original  engagement or such additional  engagement and
shall remain in full force and effect following the completion or termination of
RP   Financial's   engagement(s).   This   agreement   constitutes   the  entire
understanding  of the  Bank  and RP  Financial  concerning  the  subject  matter
addressed  herein,  and  such  contract  shall  be  governed  and  construed  in
accordance with the laws of the Commonwealth of Virginia. This agreement may not
be modified,  supplemented  or amended except by written  agreement  executed by
both parties.

     Summit and RP  Financial  are not  affiliated,  and  neither  Summit nor RP
Financial has an economic  interest in, or is held in common with, the other and
has not derived a  significant  portion of its gross  revenues,  receipts or net
income for any period from transactions with the other.

                             * * * * * * * * * * *

     Please  acknowledge your agreement to the foregoing by signing as indicated
below and returning to RP Financial a signed copy of this letter,  together with
the initial retainer fee of $5,000.


                                        Sincerely,

                                        /s/ William E. Pommerening

                                        William E. Pommerening
                                        Chief Executive Officer
                                          and Managing Director



Agreed To and Accepted By:   Eugene G. Stone  /s/ Eugene G. Stone
                                              --------------------
                             President and Chief Executive Officer


Upon Authorization by the Board of Trustees:  Summit Bank
                                              Medway, Massachusetts


Date Executed:   April 24, 1998
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