EXHIBIT 31.2

I, Richard W. Lucas, certify that:

     1.  I have reviewed this quarterly report on Form 10-Q of KSW, Inc.;

     2.  Based  on my  knowledge,  this  report  does  not  contain  any  untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances  under which
         such  statements  were made, not misleading  with respect to the period
         covered by this report;

     3.  Based on my knowledge,  the financial  statements,  and other financial
         information  included in this  report,  fairly  present in all material
         respects the financial condition,  results of operations and cash flows
         of the registrant as of, and for, the periods presented in this report;

     4.  The  registrant's  other  certifying  officer and I are responsible for
         establishing  and  maintaining  disclosure  controls and procedures (as
         defined  in  Exchange  Act  Rules  13a-15(e)  and  15d-15(e))  for  the
         registrant and have:

             (a) Designed such  disclosure  controls and  procedures,  or caused
             such  disclosure  controls and  procedures to be designed under our
             supervision,  to ensure that material  information  relating to the
             registrant,  including its consolidated subsidiaries, is made known
             to us by others  within  those  entities,  particularly  during the
             period in which this report is being prepared;

             (b)  Evaluated the  effectiveness  of the  registrant's  disclosure
             controls  and   procedures   and   presented  in  this  report  our
             conclusions about the effectiveness of the disclosure  controls and
             procedures,  as of the end of the  period  covered  by this  report
             based on such evaluation; and

             (c)  Disclosed  in  this  report  any  change  in the  registrant's
             internal control over financial  reporting that occurred during the
             registrant's  most recent fiscal quarter (the  registrant's  fourth
             fiscal quarter in the case of an annual report) that has materially
             affected,  or  is  reasonably  likely  to  materially  affect,  the
             registrant's internal control over financial reporting; and

     5.  The registrant's other certifying  officer and I have disclosed,  based
         on our most  recent  evaluation  of  internal  control  over  financial
         reporting,  to the registrant's auditors and the audit committee of the
         registrant's  board of directors (or persons  performing the equivalent
         functions):

             (a) All  significant  deficiencies  and material  weaknesses in the
             design or operation of internal  control over  financial  reporting
             which are reasonably  likely to adversely  affect the  registrant's
             ability  to  record,   process,   summarize  and  report  financial
             information; and

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             (b) Any fraud, whether or not material, that involves management or
             other  employees  who have a significant  role in the  registrant's
             internal control over financial reporting.

         Date:  August 7, 2007

                                                  /s/Richard W. Lucas
                                                  ------------------------------
                                                  Richard W. Lucas
                                                  Chief Financial Officer