Exhibit 10.3
                                COLUMBIA BANCORP
                          10480 Little Patuxent Parkway
                             Columbia Maryland 21044

                               ____________, 2000


                        Incentive Stock Option Agreement
                            Option Number: _________

         STOCK OPTION (the  "Option") for a total of _________  shares of common
stock, par value $0.01 per share (the "Common Stock"),  of Columbia Bancorp (the
Company"),  is hereby granted to ____________  (the "Optionee") at the price set
forth in Section 2, effective as of the "Effective Date," as defined in the Plan
and Agreement to Merge,  by and between  Company and Suburban  Bancshares,  Inc.
("Suburban  Bancshares"),  dated  September  28,  1999,  as amended (the "Merger
Agreement").  The Option is granted  pursuant to the Suburban  Bancshares,  Inc.
1997 Stock Option Plan, as assumed and amended by the Company (the "Plan"),  and
is subject to the terms and provisions of this Agreement and the Plan, the terms
of which are incorporated in this Agreement by reference. The Option is intended
to qualify as an  incentive  stock  option  under  Section  422 of the  Internal
Revenue Code of 1986, as amended (the "Code").

         1.  Option  Price.  The price at which  shares of  Common  Stock may be
purchased under this Agreement is ___________ for each share.

         This  Option  is  granted,   pursuant  to  the  Merger  Agreement,   in
substitution  for the outstanding  incentive stock option (the "Former  Option")
granted to the  Optionee  by the  Suburban  Bancshares  on  ______________  (the
"Former  Option's Grant Date") under the terms of the Plan as in effect prior to
the Effective Date. The Optionee  acknowledges that,  pursuant to the provisions
of Section  10(b) of the Plan as in effect  immediately  prior to the  Effective
Date, the Former Option was surrendered and cancelled  immediately  prior to the
Effective Date to obtain the grant of this Option by the Company in substitution
for such Former  Option.  The Former Option has no further force or effect after
such  surrender and  cancellation.  The Optionee  agrees that the Optionee shall
have no further right of any kind under the Former  Option,  including the right
to purchase any securities,  and further agrees that this Agreement will FOREVER
AND IRREVOCABLY RELEASE AND DISCHARGE Suburban  Bancshares and the Company,  the
directors and officers  thereof,  and any and all other persons who may have any
liability with respect to the Former Option, from any and all claims, rights and
liabilities whatsoever relating to the Former Option.

         2. Exercise of Option. This Option shall be exercisable as follows:

           (i) One hundred percent (100%) of the Option is exercisable as of the
date of this Agreement.
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           (ii) Method  of  Exercise.  This Option  shall  be  exercisable  by a
written notice by the Optionee which shall:

               (a) state the  election  to exercise  the  Option,  the number of
               shares with respect to which it is being exercised, the person in
               whose name the stock  certificate or certificates for such shares
               of Common  Stock is to be  registered,  his  address  and  Social
               Security  Number (or if more than one, the names,  addresses  and
               Social Security Numbers of such persons);

               (b)  contain  such  representations  and  agreements  as  to  the
               holder's  investment intent with respect to such shares of Common
               Stock as may be satisfactory to the Company's counsel;

               (c) be signed by the person or persons  entitled to exercise  the
               Option,  and if the  Option is being  exercised  by any person or
               persons  other  than  the  Optionee,  be  accompanied  by  proof,
               satisfactory  to counsel  for the  Company,  of the right of such
               person or persons to exercise the Option; and

               (d) be in writing and delivered in person or by certified mail to
               the Treasurer the Company.

           Payment of the purchase price of any shares with respect to which the
Option is being exercised shall be by cash, Common Stock, or such combination of
cash and Common Stock as the  Optionee elects.  The  certificate or certificates
for  shares  of  Common  Stock  as  to   which  the  Option  shall  be exercised
shall be registered  in the name of the person or persons exercising the Option.

           (iii)  Restrictions on exercise.  This Option  may  not  be exercised
if the issuance of the shares upon such  exercise  would  constitute a violation
of any applicable federal or state  securities or other law or valid regulation.
As a  condition  to the  Optionee's  exercise of this  Option,  the  Company may
require  the  person  exercising  this  Option  to  make any  representation and
warranty   to  the  Company  as  may  be  required  by  any   applicable  law or
regulation.

         3.  Withholding.  The Optionee  hereby  agrees that the exercise of the
Option or any  installment  thereof  will not be  effective,  and no shares will
become  transferable  to the  Optionee,  until the  Optionee  makes  appropriate
arrangements with the Company for such tax withholding as may be required of the
Company under federal, state, or local law on account of such exercise.

         4. Non-transferability of Option. This Option may not be transferred in
any manner  otherwise  than by will or the laws of descent or  distribution,  or
pursuant  to a  "qualified  domestic  relations  order"  (within  the meaning of
Section  414(p) of the Code and the  regulations  and rulings  thereunder).  The
terms of this Option shall be binding upon the executors, administrators, heirs,
successors and assigns of the Optionee.
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         5. Term of Option. This Option may not be exercisable for more than ten
years from the Former Option's Grant Date, and may be exercised during such term
only in accordance with the Plan and the terms of this Option.


                                     SUBURBAN BANCSHARES, INC.
                                     1997 STOCK OPTION PLAN COMMITTEE

                                     By: ___________________________________
                                     Print Name: ____________________________
                                     Title: __________________________________

Accepted and Approved:


------------------------------------
Print Name: __________________________
Dated: _________________________, 2000

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