Exhibit 21
Perini Corporation Subsidiaries of the Registrant Percentage of Interest or Voting Place of Securities Name Organization Owned - ----------------------------------------------------------------- ---------------------------- -------------- Perini Corporation Massachusetts Perini Building Company, Inc. Arizona 100% Perini Management Services, Inc. (f/k/a Perini International Corporation) Massachusetts 100% James A. Cummings, Inc. Florida 100% Cherry Hill Construction, Inc.* Maryland 100% Perini Environmental Services, Inc. Delaware 100% International Construction Management Services, Inc. Delaware 100% Percon Constructors, Inc. Delaware 100% Bow Leasing Company, Inc. New Hampshire 100% Perini Land & Development Company, Inc. Massachusetts 100% Paramount Development Associates, Inc. Massachusetts 100% Mt. Wayte Realty, LLC Delaware 100%
*Acquisition effective January 1, 2005.