MAT 4Site Ltd.

MAT 4Site Engineers is a privately owned firm based in the Greater Toronto Area specializing in the design and engineering of building systems for commercial and institutional facilities. The company provides mechanical, electrical, energy modeling, communications, IT, and commissioning services for both new construction and retrofit projects. MAT 4Site Engineers holds professional engineering licenses across Canada and maintains affiliations with organizations including the Ontario Society of Professional Engineers, National Fire Protection Association, Canadian Green Building Council, and American Society of Heating Refrigeration and Air-Conditioning Engineers.

Established in 2004, the firm initially focused on retrofitting and renewing existing mechanical systems. The company has since expanded its service offerings while maintaining its core mission to help clients develop buildings tailored to their specific needs.