Jacobs Construction and Renovations
“He helped keep us within our budget, and created an oasis from a disaster!”
Best General Contractors in Keswick, ON
15 companies listed · 7 in Keswick · 3 open 24/7 · 10 open weekends · all 15 rated 4.5+
Data verified October 21, 2026
Chase Contracting Deck & Fence
“Good attention to detail, Chase caught something things on the final walkthrough that I hadn't noticed and his guys were back the next day to fix it.”
Terra Decks Inc
“If my wife is pleased with their work, you know they did an excellent job.”
ROI Renos
“Jim kept us informed throughout the process, letting us know what was done and what was next as we went.”
Brown Brother Roofing & Exterior Finishing
“I called Brown Brothers back and Glen said after 10 years the roof was in great shape and other than some minor damage, it didn't need a lot of work.”
By Wisdom Inc.
“Overall, the project went smoothly and they created a very comfy home for us with a sense of warmth and elegance.”
Listed for homeowners in and around Keswick, ON, these 15 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: Keswick, ON
Of the 15 companies we list here, 7 are in Keswick itself and 8 come from towns including East Gwillimbury (3, 14 km), Barrie (2, 21 km) and Innisfil (1, 11 km). The companies on this page are rated from 4.5 to 5.0 across 936 reviews; 7 have 50 or more reviews. The topics that come up most in reviews of the companies on this page are "quality", "cleanliness" and "communication". 3 are open around the clock; 10 are open on Saturdays and 5 on Sundays. 4 show a licence on their websites. 5 have ten or more years of experience, the longest 21 years. 3 offer emergency call-outs; 1 offers financing or payment plans; 7 give free estimates and 2 are family- or locally-owned. We have a website on file for 14 of the companies on this page; 13 publish a contact page and 13 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.
Do any of these companies quote without charging?
The free estimate promises less on a multi-trade job, and it is advertised by 7 of the 15 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.
Large Format Flooring
“Our kitchen and bathroom look amazing, we just can't get over how great everything looks now.”
Winmar Property Restoration Specialists
“Eric and his team provided a high standard of work and were responsive to enquires throughout the process.”
Yorkland Homes
“I did not want to have to replace the complete hardwood floor, so Sergei worked to find some nicely matched wood to create a beautiful threshold piece.”
S.o.n.c.e Homes
“He will come by often to check and ensure that the work is up to par, ensure the materials used are the best or better, and explain everything in detail.”
Stonehaven Interlocking Inc. & Landscape Design
“The crew was professional, respectful, clearly communicated every part of the project and its progress, and they completed the project on time.”
Wired up Electrical Services Inc.
“On the most recent visit, he dealt with our property's maintenance manager's challenging behaviour and maintained his integrity and was incredibly professional.”
Barrie Trim & Mouldings
“Their prices are far more reasonable than the neighbouring big-box stores — especially the American-owned chains — but what truly sets them apart is their exceptional customer service”
MGL Homes
“Super nice guy and I would not hesitate to recommend him and his team for your project.”
Como Maintenance Services
“Arman was exactly on time and delivered exactly what he had promised.”
Why these companies made our list
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