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24 contractors listed · 7 in London · 2 open 24/7 · 12 open weekends · 17 rated 4.5+
Data verified October 21, 2026
The 24 contractors listed for London, ON work on wet basements, foundations and crawl spaces. Warranty claims, free inspection offers and hours come from each company's own website. Ask each one how the proposed repair holds up through frost, because that is where local systems fail.
7 of the 24 contractors we list are based in London; the other 17 serve London from towns including Ilderton (19 km), Woodstock (44 km) and Dorchester (13 km). 23 of the contractors on this page have a rating, from 3.7 to 5.0 across 529 reviews; 4 have 50 or more reviews and 17 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (91%), quality (88%) and responsiveness (77%). The topics that come up most in reviews of the contractors on this page are "estimates", "price" and "communication". 2 are open around the clock; 12 are open on Saturdays and 4 on Sundays. The services the contractors on this page list most often on their websites are concrete (3), demolition services (2), sump pumps (2), weeping tile (2) and window wells (2). 1 shows a licence on its website. 7 have ten or more years of experience, the longest 29 years. 2 offer emergency call-outs; 9 give free estimates and 7 are family- or locally-owned. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
There are 24 listings for London. Get more than one assessment before committing, because diagnoses here differ more than prices do, and one crew's interior system is another crew's regrading and downspout job. Compare what each one says is causing the water rather than the number at the bottom.
