EXHIBIT 23.4 RP FINANCIAL, LC. - --------------------------------------- Financial Services Industry Consultants July 27, 1998 Board of Trustees Service Bancorp, MHC Board of Directors Summit Bank 81 Main Street Medway, Massachusetts 02053 Gentlemen: We hereby consent to the use of our firm's name in the Form SB-2 Registration Statement and any amendments thereto for Service Bancorp, Inc. We also hereby consent to the inclusion of, summary of and references to our Appraisal and our statement concerning subscription rights in such filings including the Prospectus of Service Bancorp, Inc. Sincerely, RP FINANCIAL, LC. /s/ Gregory E. Dunn Gregory E. Dunn Senior Vice President - -------------------------------------------------------------------------------- Washington Headquarters Rosslyn Center 1700 North Moore Street, Suite 2210 Telephone: (703) 528-1700 Arlington, VA 22209 Fax No.: (703) 528-1788