The Architectural Firm P. MASSOURIDIS and ASSOCIATES, PMA, was established in 1968 and is registered under this name with the Greek Ministry of Planning. The firm is run by architect Pandelis Massouridis, an Honors Graduate of the Architectural Association, School of Architecture, and London.

Pandelis Massouridis is also the Executive Representative of the Consulting firm AR.SY (ARCHITECTONIKI SYNERGASIA) Ltd., established in 1981, as a collaboration of three Architectural and Planning Offices. AR.SY is a member of ''E.F.C.A.'', the European Committee's Consulting Firms International Association.

The Firm of PMA has been involved in design work and construction supervision of projects covering a wide range of activities, from housing projects to Industrial and commercial projects, Educational, Social buildings, as well as Town - Planning and Urban Design projects.