1201 NICHOLSON ROAD - suite 200, NEWMARKET, ON  |  TEL 905 898 3514  | TOLL FREE  1 855 998 3514  |  INFO@ADENGINEERING.CA

Our History

A-D Engineering Group Ltd. was founded by David Lehman, M.A.Sc., P.Eng. (Consulting Engineer) in 1986 as A-D Structural Engineering Group. It was re-established as A-D Engineering Group Ltd. in 1998.

David Lehman graduated from the University of Toronto with a Bachelor and Master of Applied Science in Civil Engineering in 1967 and 1968, respectively. Since then, he has accumulated a wealth of practical experience in the structural engineering and construction fields. He is currently licensed as a professional engineer in Ontario, British Columbia, Alberta, Saskatchewan, Nova Scotia, New Brunswick, Northwest Territories and Nunavut.


August 15, 2016

A-D Engineering Group Ltd. has moved to a new location. Our office is now located at 1201 Nicholson Road, Newmarket, ON. You will find us on the second floor of this address. We hope to see you soon!

August 12, 2016

Welcome to A-D Engineering Group's new website! You may find a summary of our services, examples of both completed and ongoing projects, as well as our contact information through the top navigation bar. We will be continually updating our website with new content. Please excuse the appearance as the website goes through construction.

As engineering firms in Toronto go, A-D Engineering Group Ltd. is among the most trusted. We offer a full range of structural engineering services for residential, commercial, industrial, institutional and agricultural projects.