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Safestep Building Treatments Inc
- Sump Pump
- Solution
- Leak
“Absolutely happy with the work, and as much as we enjoyed this company, we hope we don't need your services again (otherwise it means more water issues) LOL”
Best Basement Waterproofing Contractors near South Frontenac, ON
None of these contractors is based in South Frontenac; they work from towns including Kingston (33 km), Ottawa (120 km) and Yarker (32 km).
24 contractors listed · 9 open weekends · 19 rated 4.5+ · 4 show a licence
Data verified October 16, 2026
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Loyalist Construction & Landscaping Ltd.
- Wall
- Excavation
- House
“Dan and his team were great, they showed up when they said they would, did exactly what they promised, and did it quickly and without any hassle or interruption to my day.”
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Limestone City Concrete Ltd
- Patio
- Work
- Hot Tub
“They were very responsive, on time, did quality work and even responsive when I had questions afterwards.”
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Rob's Excavation & Property Maintenance
- Company
- Driveway
- Garden
“They poured a 14x14 cement pad moved a fence and added lots of extra little things for us for a good price!”
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Wilcore Concrete Drilling & Cutting Ltd
“When we needed cement around a frame in the foundation increased in size!”
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Santos Brothers Construction
“Did the job (including pinning and pouring the foundation, and pouring the basement slab and porch) with expert-level skill and were a pleasure to have on site.”
The 24 contractors listed for South Frontenac, 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.
Area overview: South Frontenac, ON
23 of the 24 contractors on this page have a rating, from 3.6 to 5.0 across 1,010 reviews; 6 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (95%), quality (80%) and responsiveness (78%). The topics that come up most in reviews of the contractors on this page are "price", "communication" and "estimates". 9 are open on Saturdays and 6 on Sundays. The services the contractors on this page list most often on their websites are basement waterproofing (3), waterproofing (3), foundation crack repairs (2), foundation inspections (2) and sump pump installation (2). 4 show a licence on their websites. 10 have ten or more years of experience, the longest 30 years. 1 offers emergency call-outs; 1 offers financing or payment plans; 15 give free estimates and 4 are family- or locally-owned. We have a website on file for 23 of the contractors on this page; 21 publish a contact page and 20 list a public email. 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.
How many opinions should I get for a damp problem?
There are 24 listings for South Frontenac. 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.
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Robert J Lappan Excavating
“Did exactly as asked and the pricing was very reasonable.”
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TH Stone Solutions
“I had reviewed other bid offers but made the right choice with a best value and professional service.”
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Canadian Sealants
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Bottoms Up Construction Ltd
“Bottoms Up did a full kitchen renovation for us and they created our dream kitchen.”
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Duratec Building Systems
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Ardel Concrete Services
- Work
- Pricing
- Fair
“What sold me on them though, and the reason I'd recommend them over some of their competition which I'd also contacted for this job and was much less impressed with, is that both of them went above and beyond in the job.”
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Belleville Custom Concrete
- Business
- Stamped Concrete
“I used Jeff several times for stamped concrete - always a good job!”
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Summit Drain & Plumbing Ottawa
- Bathrooms
- Laundry
- Basement
“His clients are often gushing about how knowledgeable and professional they are and that the price of the job is always the average of all the quotes they get.”
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Braden Foundation Construction
- Basement
- Excavation
- Quality
“I was located a bit too far out his business range, but despite that he stayed on the phone with me and offered tips for best practices and materials for when I find a local contractor.”
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Black Tar Construction
- Warranty
- Efficient
- Home
“Very happy with the work completed, Black Tar installed a new driveway with asphalt and interlock around the perimeter, looks like the driveway we always dreamed of, officially no outstanding projects in the front of our house!!”
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EC Foundations
- Questions
- Quality
- Price
“I called Scott again and he provided a slightly revised quote (because it was now a year later) which included everything (permits, inspections, engineering reports, poured garage floor and final report for my records).”
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The Foundation Guys Inc.
- Sump Pump
- Sales
- Clean
“They were in and out of my 900 sq foot crawlspace in less than a day, including removal of some ancient relics that had been left down there by previous owners.”
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City Residential Foundation Repair Ottawa
- Questions
- Weeping Tile
- Sump Pump
“He sent photos of the work in progress to keep me in the loop, answered all my questions promptly and thoroughly, and followed up a month after the job to make sure that I was satisfied with the work.”
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Renco Home Improvements
- House
- Inspection
- Team
“We worked with Renco Home Improvements to repair a small foundation crack in our unfinished basement which had just started leaking and which needed to be repaired from inside the house.”
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Aquafix Basement Waterproofing
- Warranty
- Cleaning
- Foundation
“A couple of months later we had Aqua Fix back to repair the parging on other parts of the block wall and once again the job was well done and to the highest of standards.”
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Forever Masonry Inc
- Parging
- Punctual
- Projects
“Our brick is old and there are no direct matches available anymore, so Anton and his crew salvaged and cleaned all the brick taken out from a new window and door, and used those bricks to repair everything.”
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Foundation Service Ottawa
- Team
- Basement
- Waterproofing
“Undertaking such big and costly repairs (including replacing foundation walls and waterproofing the whole perimeter of the house) is daunting and one would expect unforeseen issues along the way.”
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Duron Excavation & Fils
- Project
- Company
- Price
“Maxime and his team (Eric, Pascal, and Mattieu) delivered on a difficult excavation sewer line replacement project that 12 other local plumbers, excavators, and general contractors would not touch nor price.”
Basement Waterproofing Services in South Frontenac, ON Cost Estimates
Minimum cost
$820
Maximum cost
$15708
National Average
$5874
$2732
$8879
Average price range is based on 345 cost profiles
Why these companies made our list
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