Magil Construction Ontario Inc. is a privately owned construction company that prides itself on delivering high quality construction projects across a variety of delivery methods including: Design-Build, Construction Management, Guaranteed Maximum Price (GMP) and Lump Sum Bids. Since our incorporation in 1946, we have been a fully diversified construction service provider in the commercial, heavy civil, industrial, and institutional sectors. We believe that each new client brings a new opportunity. Magil continuously seeks to provide its clients with solutions that will enhance value to their customers and clients, their industries, and ultimately themselves.