Massaro and Welsh, Inc.


Founded in 1974, we are a multidisciplinary firm, providing services in the fields of engineering (civil, transportation, sanitary, and structural), planning, land surveying, and construction management. We serve primarily Southern California and value quality above quantity, integrity and a good reputation above profits. Read more about us here.

Services We Offer

Massaro & Welsh has developed extensive in-house capabilities representing a broad range of specialties to provide total service to clients: services from initial feasibility studies through design and construction are offered. The following sections briefly summarize categories of capabilities of Massaro & Welsh which may be called upon to provide assistance on projects, or which illustrate the extensive background of the firm.