Mountainview Building Group
“Very good experience with the team, Mountain has done a great job especially Monika was outstanding and her response was very quick and she attended to all our enquiries.”
Best General Contractors in Thorold, ON
24 companies listed · 7 in Thorold · 1 open 24/7 · 13 open weekends · 19 rated 4.5+
Data verified October 21, 2026
Johns Post Holes
“Mother Nature did not cooperate that week but they were in touch every day to update.”
All-Pro Waterproofing & Excavating Inc
“A huge thanks to the gentleman on the phone for being genuine, straight up, and taking the time to teach this new homeowner the basics of foundation care.”
NPL Canada
“Great people to work with !!”
Tmmt Renovations
“My renovation was a logistical challenge due to the age of the house and John was able to come up with unqiue solutions to the many issues that arose.”
Gauboc Construction
“Great concrete, brick and cement installation company”
Listed for homeowners in and around Thorold, ON, these 24 companies take on multi-trade work, from a basement build-out to a full renovation. What each one says about licensing, hours and the work it takes on comes from its own website; ratings and quotes come from public reviews.
Area overview: Thorold, ON
Of the 24 companies we list here, 7 are in Thorold itself and 17 come from towns including St. Catharines (6), Niagara Falls (4) and Beamsville (1). The companies on this page are rated from 4.2 to 5.0 across 903 reviews; 6 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (96%), quality (86%) and responsiveness (84%). The topics that come up most in reviews of the companies on this page are "price", "communication" and "estimates". 1 is open around the clock; 13 are open on Saturdays and 7 on Sundays. 1 shows a licence on its website. 11 have ten or more years of experience, the longest 30 years. 1 offers emergency call-outs; 6 give free estimates and 3 are family- or locally-owned. We have a website on file for 22 of the companies on this page; 19 publish a contact page and 16 list a public email. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do any of these companies quote without charging?
The free estimate promises less on a multi-trade job, and it is advertised by 6 of the 24 companies here. Free normally buys a walk-through and a ballpark figure. A real price takes measuring, trade pricing and desk time, so design-build firms often charge for that stage and credit it against the work if you sign.
Efficient Exteriors
“He delivered excellent service and quality workmanship in a timely manner and we appreciated his attention to detail, safety and cleanliness on-site.”
JR Concrete
“Professional team , and easy to work with”
Grossi Tile & Building Centre Ltd
“Overall great vibes, a large beautiful selection, competitive pricing, quick supply turnaround and a hidden gem of a clearance section.”
Noble Roofing
“Call noble roofing for a possible leak from the flat roof we had at our apartment and it was the most professional experience I've had with a contractor.”
Golden Eagle Hardwood Flooring Sanding & Refinishing
“My experience with Matt, the owner, was phenomenal from start to finish for the refinishing of two wood floors in my cottages.”
Niagara Block Inc
“Great place, great price, friendly staff”
Eden Build
“They were very professional, reliable and easy to work with, which gave us a lot of peace of mind.”
FB Drywall Inc.
“Very professional and the project was completed on time and as promised.”
Harris Waterproofing
“Everything was executed on time and was very pleased with the overall service.”
Foundation Fix Inc.
“Sebastian and his sons came out, diagnosed the problem and had it fixed within 72 hours.”
Lucchetta Homes
“Extras above standard choices a bit pricey but in general very positive in adding to ambience of building.”
Landart
“From the office staff to the construction crews, care was taken to ensure our needs were met and everyone played a role in making our experience as enjoyable as possible!”
Mitchell's Stucco and Parging
“I would definitely recommend them if you're looking for high quality work.”
Red Maple Contracting
“I was confident in the team and their attention to detail to create an amazing new space.”
AA Design Group
“The quality of work, attention to detail and timely follow up was really appreciated.”
McKeen Construction
“From design and project planning all the way to the punch list, McKeen stayed in top of what needed to get done and found solutions when we ran into surprises.”
Stevebuilt Inc.
“Steve helped us anticipate problems along the way (as one would naturally come to expect in a house from the 60s) and provided multiple solutions to help us balance our budget and our needs when it came time to address the situations.”
Mitchell Contracting
“The owner and staff of Mitchell Contracting demonstrated professional workmanship, have a eye for detail and provide excellent quality and value for the project.”
Why these companies made our list
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