Michael K. Devlin
               Senior Vice President                               Immediately
               (617) 628-4000

                 CENTRAL BANCORP REPORTS SECOND QUARTER EARNINGS

     SOMERVILLE,   MASSACHUSETTS,  October  28,  2003--  Central  Bancorp,  Inc.
(NASDAQ:  CEBK) today reported that its net income increased 24% to $830,000, or
$0.53 per diluted  share,  for the three months ended  September 30, 2003,  from
$668,000, or $0.42 per diluted share, for the corresponding quarter in the prior
fiscal year.  The current  quarter's  results  reflect an insurance  recovery of
$214,000, net of related legal fees and taxes,  attributable to the dispute with
certain shareholders,  which was settled during the quarter. In addition, during
the quarter ended September 30, 2002, the Company incurred  substantial costs in
connection  with the  contested  election of  directors  at the annual  meeting,
which, after taxes, reduced net income by approximately $190,000.
     Earnings  during  the  quarter  ended  September  30,  2003 were  adversely
affected by a decrease in net interest  income of  $175,000,  as compared to the
same  quarter in the prior year.  The  gradual  reduction  in interest  rates in
recent years had a greater  relative  impact on the  Company's  yield on earning
assets in the  current  fiscal year than on the cost of funds due to the limited
opportunity  to reduce  deposit  rates and the fixed cost of FHLB  advances.  In
addition,  the  Company  has  sold  the  bulk  of its  current  year  fixed-rate
residential  mortgage  loan  originations  due to  the  historically  low  rates
prevailing  during the period and invested the related  proceeds on an overnight
basis. These factors led to a reduction in the net interest margin from 3.56% in
the quarter ended September 30, 2002 to 3.39% in the current quarter. In October
2003, the Company  commenced a program to reinvest the majority of its overnight
funds in various intermediate-term investments and mortgage-backed securities in
order to increase its yield on earning assets.
     For the six months ended  September 30, 2003,  net income  increased 25% to
$2,118,000,  or $1.36 per diluted share,  from $1,695,000,  or $1.05 per diluted
share in the year earlier period.  Exclusive of the after-tax impact of $374,000
resulting from the

                                  (continued)


Central Bancorp, Inc.
Page 2 of 3

Company's  June 2003  settlement  of its  REIT-related  tax  liability  with the
Massachusetts  Department  of  Revenue  and  the  aforementioned  net  insurance
recovery,  which  increased  earnings  $276,000 in the first half of the current
year, net income declined  $227,000  compared to the year earlier  period.  This
reduction was largely the result of a $346,000  decrease in net interest  income
in the first half of the current year, as compared to the prior year period.
     John D. Doherty,  Chairman,  President & Chief Executive  Officer,  stated,
"The current  interest-rate  environment  continues to create compression in our
net interest  margin.  We believe that our strategy of selling nearly all of our
current year originations of fixed-rate  residential mortgage loans is sound. We
recently  began to  reinvest a portion of the  nearly $47  million in  overnight
investments  held at September 30, 2003,  which is expected to improve the yield
on our investments during the remainder of the fiscal year. With the increase in
mortgage rates during the current quarter, residential loan refinancing activity
has declined significantly,  which is expected to adversely affect the volume of
loan sales in the second half of the year."
     During  the  current  quarter,  the  Company  originated  $15.2  million in
commercial  real estate and  construction  loans.  At September  30,  2003,  the
Company  had nearly  $154  million in  outstanding  commercial  real  estate and
construction loans,  representing 43% of the total loan portfolio.  Loan quality
continued to be  outstanding  with no loans  delinquent  in excess of 90 days at
September 30, 2003.
     Central Bancorp,  Inc. is the holding company for Central Bank, whose legal
name is Central Co-operative Bank, a  Massachusetts-chartered  co-operative bank
operating eight full-service banking offices and one limited-service high school
branch in suburban Boston.

                           (See accompanying tables.)
- --------------------------------------------------------------------------------

This press release contains  financial  information  determined by methods other
than in accordance  with  accounting  methods  generally  accepted in the United
States of  America  ("GAAP").  The  Company's  management  uses  these  non-GAAP
measures in its analysis of the Company's performance.  These measures typically
adjust GAAP performance  measures to exclude the effects of significant gains or
losses that are unusual in nature.  Because  these items and their impact on the
Company's  performance  are  difficult  to  predict,  management  believes  that
presentations of financial  measures excluding the impact of these items provide
useful supplemental  information that is essential to a proper  understanding of
the operating results of the Company's business. These disclosures should not be
viewed as a substitute for operating results determined in accordance with GAAP,
nor are  they  necessarily  comparable  to  non-GAAP  performance  which  may be
presented by other companies.
     This press release may contain certain  forward-looking  statements,  which
are based on management's current expectations  regarding economic,  legislative
and regulatory issues that may impact the Company's  earnings in future periods.
Factors  that  could  cause  future  results  to vary  materially  from  current
management  expectations  include,  but are not  limited  to,  general  economic
conditions,  changes in interest  rates,  deposit flows,  real estate values and
competition;  changes in accounting principles,  policies or guidelines; changes
in legislation or regulation;  and other  economic,  competitive,  governmental,
regulatory  and  technological   factors  affecting  the  Company's  operations,
pricing, products and services.
- --------------------------------------------------------------------------------

Central Bancorp, Inc.
Page 3 of  3

                              CENTRAL BANCORP, INC.
                           CONSOLIDATED OPERATING DATA
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)



                                                                  Quarter Ended        Six Months Ended
                                                                   September 30,         September 30,
                                                        -------------------------------------------------
                                                            2003           2002         2003        2002
                                                        -------------------------------------------------
                                                                                         
                                                                (Unaudited)                (Unaudited)

         Net interest and dividend income                 $3,941           $4,116     $ 8,050     $ 8,396
         Provision for loan losses                            50               --         100          --
         Net loss on sales and write-downs
           of investment securities                         (130)            (221)       (135)       (210)
         Gain on sale of loans                                68                1         209           1
         Other non-interest income                           230              278         503         490
         Non-interest expenses                             2,761            3,132       5,759       6,023
                                                          ------           ------     -------     -------
           Income before taxes                             1,298            1,042       2,768       2,654
         Provision for income taxes                          468              374         650         959
                                                          ------           ------     -------     -------
           Net income                                     $  830           $  668     $ 2,118     $ 1,695
                                                          ======           ======     =======     =======
         Earnings per share:
           Basic                                          $  .54           $ 0.42     $  1.37      $ 1.06
                                                          ======           ======     =======      ======
           Diluted                                        $  .53           $ 0.42     $  1.36      $ 1.05
                                                          ======           ======     =======      ======
         Weighted average number of
           shares outstanding:
           Basic                                           1,549            1,585       1,547       1,592
                                                          ======           ======     =======      ======

           Diluted                                         1,563            1,600       1,561       1,609
                                                          ======           ======     =======      ======

         RECONCILIATION OF GAAP EARNINGS
          TO PRO FORMA EARNINGS:
         Net income per GAAP                              $  830           $  668     $ 2,118     $ 1,695
         Impact of REIT legislation, net of taxes             --               --        (374)         --
         Impact of litigation and legal fees,
           net of insurance and taxes                       (214)              --        (276)         --
                                                          ------           ------     -------     -------

           Pro forma earnings                             $  616           $  668     $ 1,468     $ 1,695
                                                          ======           ======     =======     =======





                                                    CONSOLIDATED BALANCE SHEET DATA
                                                             (IN THOUSANDS)
                                                       SEPTEMBER 30,    MARCH 31,
                                                            2003          2003
                                                    -------------------------------
                                                                       
                                                      (UNAUDITED)

         Total assets                                  $ 478,382        $ 477,208
         Total loans (1)                                 354,126          390,464
         Allowance for loan losses                         3,389            3,284
         Deposits                                        284,515          287,959
         Borrowings                                      144,427          144,576
         Stockholders' equity                             42,536           39,443


 (1) Includes loans held for sale of $4,152 and $647 at September 30, 2003
     and March 31, 2003, respectively.