PMD Excavation Construction
“Thank you so much for the professional service - will be calling Dwayne for all of my excavation needs!”
Best Concrete Contractors in St. Thomas, ON
15 companies listed · 4 in St. Thomas · 2 open 24/7 · 9 open weekends · 14 rated 4.5+
Data verified October 18, 2026
RS Concrete Solutions
“It didn't matter the weather, snow and rain didn't stop them from working hard everyday and keeping to the timeline we were given at the time we signed our contract.”
Laemers Excavating
“After a small mistake on a delivery, they came outside of their business hours to rectify the issue.”
Lambeth Painting Inc
Wildroses Landscaping Corp
“They did a really great job with the wood and railing choices, it looks better than we could have imagined.”
West Key Builders/Parging/Concrete Contractor.
“The parging was great and did a very good job.”
Listed for homeowners in and around St. Thomas, ON, these 15 companies do concrete work. What each says about mixes, finishes and scheduling around the cold season comes from its own website; the ratings and comments on this page are from public reviews.
Area overview: St. Thomas, ON
4 of the 15 companies we list are based in St. Thomas; the other 11 serve St. Thomas from London (24 km) and Aylmer (14 km). The companies on this page are rated from 4.2 to 5.0 across 264 reviews; 1 has 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (97%), quality (88%) and value (83%). 2 are open around the clock; 9 are open on Saturdays and 3 on Sundays. 1 shows a licence on its website. Domain records put 5 websites of the companies on this page at ten or more years old; the oldest dates from 2006. 2 offer emergency call-outs; 4 give free estimates and 4 are family- or locally-owned. We have a website on file for 13 of the companies on this page; 12 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 crews list weekend hours?
Weekend hours show on 9 of the 15 listings here. Concrete gets scheduled around the forecast and the plant, not around the calendar, so weekend hours generally mean somebody picks up the phone rather than a crew being on site.
Ferrari Concrete
“WE did have a small issue with the driveway but when we were able to get together with the company and they investigated the problem they came back and did a substantial repair under warranty.”
MAR Concrete Ltd.
“They were professional, always kept me in the loop of any changes, regardless of how small.”
Levelslab Concrete Lifting
“The work you did was so neatly done and very professional and the exact height we needed.”
Lockington Homes I.c.f
“Lockington homes is a great family owned ICF builder and a great crew of knowledgeable employees and where above and beyond in helping with some electrical issues , like helping putting the main electrical feed through the ICF blocks , just the conduit .”
Accent Landscape and Pools
“Couldn't be happier with our pool”
Alterfine Masonry
“Andre and his crew poured a new concrete driveway, front step and sidewalk for me.”
Mersy+ Brothers Excavating
“If you need any excavating, I wouldnt hesitate to recommend mersy brothers”
Concrete Surface Solutions
“Their timely response and caring attitude made what could've been a complicated situation on my end, far better.”
Ron Murphy Contracting Co. Ltd.
“Always a pleasure to deal with them!!”
Why these companies made our list
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