Baypath Inc.
“I used Nima at BayPath for helping me with the process of kitec replacement plumbing.”
Best Civil, Structural and Environmental Engineers in Thornhill, ON
24 companies listed · 7 in Thornhill · 2 open 24/7 · 8 open weekends · 18 rated 4.5+
Data verified October 18, 2026
Dr Energi Inc.
L P Engineering Inc
Aavi Engineering Ltd.
“They took care of the entire process for me, starting by designing, drawing the sketches , applying for permits and executing inspections along the way.”
Ontario Steel Detailing
Tolossi Group
Listed for property owners in and around Thornhill, ON, these 24 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: Thornhill, ON
7 of the 24 companies we list are based in Thornhill; the other 17 serve Thornhill from towns including Toronto, Brampton and Markham. 22 of the companies on this page have a rating, from 4.0 to 5.0 across 633 reviews; 3 have 50 or more reviews and 18 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (86%), quality (77%) and responsiveness (72%). The topics that come up most in reviews of the companies on this page are "communication", "efficient" and "price". 2 are open around the clock; 8 are open on Saturdays and 4 on Sundays. The services the companies on this page list most often on their websites are building permits (3), mechanical engineering (3), civil engineering (2), electrical engineering (2) and structural engineering (2). 2 show a licence on their websites. Domain records put 6 websites of the companies on this page at ten or more years old; the oldest dates from 1996. 2 offer emergency call-outs; 2 give free estimates and 1 lists coupons or special offers. We count these figures across the companies on this page; 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 23 of the 24 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.
Ramboll Canada Inc.
Noble Prime Solutions Ltd.
“In particular, Tanvir, was extremely knowledgeable and willing to answer my many questions.”
Wall Remover
“These guys are the best at what they do by install the best support for structural in house .”
MSH Engineers Inc l Hvac Design Contractor
“Thank you to Saad and his entire team for all their help and professionalism, especially during these very trying times.”
Master Assemblist
“The assembly technicians did an excellent job hanging art work, mirrors and the installation of shelves.”
FA Engineering
“He was referred to us when we were shut down and he has not disappointed.”
Architalcan Design Inc.
“I needed some renovations done and within a week, all the drawings, permit application was completed and submitted!”
ASR Engineers Inc
“Their engineers showed a forward-thinking attitude by utilizing state-of-the-art tools and techniques to provide a solution that not only suited our immediate needs but also set us up for success in the future.”
Structural Engineer P.eng
“Fadhel was very thorough with his work, explained every little detail patiently.”
Tarra Engineering & Structural Consultants Inc.
“In addition, the company has been an excellent ambassador for the engineering community, forging links and encouraging relationships even with nominal competitors to encourage high standards and professional development.”
MXL Engineering & Associates Inc
“Bruno and his team truly provide a great customer experience, and I will continue to rely on them for future projects.”
Engineered Plans
“I am super amazed with the dedication, loyalty, and prompt response service Sabih provided and overall Engineered Plans.”
6ixdesign Architecture + Engineering Inc
“Each time we receive prompt, clear and knowledgable communication to get the project done.”
Marvel Engineering Inc
“They were on time, value for money and follow up was excellent.”
Smart Group
“Working with sss was a great experience and i am sure will do more business with them”
Meadowbrook Construction
“If you are looking for a single source solution for your construction & project management needs, look no further, these are the contractors that you are looking for.”
Amaris Group INC
“David and his staff installed interlocking stone in my backyard (patio), driveway, and porch (with custom built steps).”
Kinectrics Inc
“Professional staff and organization 👍🏻 …”
Why these companies made our list
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