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Basement waterproofing and drainage in Don Mills

Last updated: By Below-Grade Records Desk

13 below-grade contractors are listed within 6 km of Don Mills, compiled August 2026.

average Google rating 4.9★ · borough / region: North York · deepest category: Basement Waterproofing (10 listed) · ordered on Google review data, not paid placement

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Which basement waterproofing contractors are listed for Don Mills?

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10 basement waterproofing contractors are listed for Don Mills, averaging 4.92★ over 330 Google reviews. SDM Contractor holds the top position at 5★ from 18 reviews. Order comes from review data and record completeness, never payment.

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Which sump pump and backwater valve installers are listed for Don Mills?

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4 sump pump and backwater valve installers are listed for Don Mills, averaging 4.88★ over 138 Google reviews. DrainWorks Plumbing Scarborough holds the top position at 5★ from 7 reviews. Order comes from review data and record completeness, never payment.

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Which underpinning contractors are listed for Don Mills?

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4 underpinning contractors are listed for Don Mills, averaging 4.92★ over 247 Google reviews. SDM Contractor holds the top position at 5★ from 18 reviews. Order comes from review data and record completeness, never payment.

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Which foundation repair contractors are listed for Don Mills?

2 foundation repair contractors are listed for Don Mills, averaging 5★ over 21 Google reviews. SDM Contractor holds the top position at 5★ from 18 reviews. Order comes from review data and record completeness, never payment.

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Which below-grade services are covered in Don Mills?

One row per category WaterproofingIndex covers in Don Mills: how many companies are listed, what they average on Google, and the GTA price range published for that service. The ranked list for each one follows underneath.

WaterproofingIndex dataset, August 2026. Ratings from public Google reviews.
CategoryListed prosAvg Google rating
Basement Waterproofing104.92★
Sump Pumps & Backwater Valves44.88★
Underpinning & Basement Lowering44.92★
Foundation Repair25★

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Why are some companies missing from this page?

38 of the 384 companies here publish no street address, only a Google service-area centroid, and 4 of them share one such point. That is not an address, so none of them is placed in Don Mills. Find them in the A-Z index, and ask which areas they cover.

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Which areas next door are covered?

Below-grade crews work across boundaries, and a company two neighbourhoods away is often on the same street the following week. These Greater Toronto Area areas next to Don Mills have their own lists.

Waterproofing in Don Mills: frequently asked questions

Who works on wet basements in Don Mills?

WaterproofingIndex's August 2026 dataset holds 13 below-grade contractors covering Don Mills, at an average Google rating of 4.9★. Basement Waterproofing is the deepest category here, with 10 listed. Get three itemised quotes before you commit to any of them.

Which below-grade service scores highest in Don Mills?

Foundation Repair leads on rating: 5.0★ across 2 rated companies, ahead of every other category WaterproofingIndex covers in this area. The stars come from Google reviewers, and our order weighs how many of them there were.

What should a Don Mills homeowner expect to pay for basement waterproofing?

Project Landscaping (Ontario) publishes $50 to $80 per linear ft for interior drainage, basic system across the GTA, before 13% HST. Depth and access are what move a Don Mills quote inside that range. The basement waterproofing cost guide on WaterproofingIndex breaks out every line item with its source.