1Direct Waterproofing Inc
0.3 km from Markham centre
Basement Waterproofing
Its own website describes below-grade water work
Basement Waterproofing Contractors in Markham, Ranked (2026)
Last updated: By Below-Grade Records Desk
7 basement waterproofing contractors cover Markham, compiled August 2026.
171 Google reviews · median 4.96★ · typical $50–$80 per linear ft (Project Landscaping (Ontario)) · 100% of rated companies at 4.8★ or above · scheduling: interior work year-round; exterior excavation typically April to November
Companies
Who does basement waterproofing in Markham?
- 1
2BTrust landscaping
3.8 km from Markham centre
Basement WaterproofingIts own website describes below-grade water work
3RCC Waterproofing Markham
2.2 km from Markham centre
Basement WaterproofingIts own website describes below-grade water work
4Basement Waterproofing Markham
4.4 km from Markham centre
Basement WaterproofingListed under Basement Waterproofing
5Concrete Markham
0.8 km from Markham centre
Basement WaterproofingIts own website describes below-grade water work
6ACCL Wet Basement, Foundation Crack Repair and Waterproofing
2.6 km from Markham centre
Basement WaterproofingIts own website describes below-grade water work
7Sign Waterproofing
4.5 km from Markham centre
Basement WaterproofingListed under Basement Waterproofing
Looking for a basement waterproofing contractor in Markham? WaterproofingIndex has 7 on file, averaging 4.96★ across 171 Google reviews, as of August 2026. Half carry more than 38 Google reviews and half fewer. Full basement waterproofing cost guide.
Ranking
What decides the order on this page?
A Bayesian-adjusted Google rating orders these 7 basement waterproofing contractors, whose median review count is 38. Position is not for sale. How the score is built.
Rules
Permits and subsidies for basement waterproofing
Permit rules and subsidies do not change between Markham and the rest of the GTA, so they are answered once, on the basement waterproofing page.
Coverage