Best Civil, Structural and Environmental Engineers in Newmarket, ON
15 companies listed · 8 in Newmarket · 4 open weekends · 9 rated 4.5+
Data verified October 19, 2026
Exco Engineering
A-D Engineering Group Ltd.
Gunnell Engineering
BK Consulting Inc
Ontario Traffic Inc
Listed for property owners in and around Newmarket, ON, these 15 companies do engineering work for properties. Listings show the disciplines each firm names on its own website, from structural to municipal site work and environmental assessment, with ratings and quotes from public reviews.

Area overview: Newmarket, ON
8 of the 15 companies we list are based in Newmarket; the other 7 serve Newmarket from Aurora (6 km) and Richmond Hill (21 km). 13 of the companies on this page have a rating, from 3.9 to 5.0 across 186 reviews; 9 are rated 4.5 or higher. 4 are open on Saturdays and 3 on Sundays. 6 have ten or more years of experience, the longest 30 years. 2 give free estimates and 1 is family- or locally-owned. We have a website on file for all 15 of the companies on this page; all 15 publish a contact page and 11 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
How do I tell which firm suits a house?
Websites are listed for all 15 firms on this page. Look at project types. A practice geared to municipal infrastructure or industrial plants may not want a beam job, while a small residential structural firm will turn it round faster and cheaper. Say the scope plainly on the first call.