Basement Waterproofing Cost Calculator 2026 | Southern Ontario’s Premier Service Network

Basement Waterproofing Costs 2026: What to Expect

(2026 Ontario pricing): Most professional basement waterproofing projects in Southern Ontario are priced per linear foot, and your final cost depends on the method, foundation depth, access, and soil conditions. As a planning range, Dryshield typically sees:

• Interior waterproofing: $70–$200 per linear foot (many homes land closer to the lower end for standard access). What’s usually included: interior drainage channel/weeping tile, wall/floor joint management, tie-in to sump or drain (as needed), patch/finish of the access area.
• Exterior waterproofing: $130–$300 per linear foot (often higher when excavation is deeper or access is tight). What’s usually included: excavation, exterior wall prep, waterproof membrane, drainage improvements (as required), backfill and cleanup.
• Typical project totals: Interior $2,500–$20,000+ and Exterior $3,500–$30,000+ depending on scope and site conditions.

Use the calculator below for a fast estimate tailored to your municipality across Southern Ontario.

How to Use the Waterproofing Cost Calculator

Note: Our calculator tool above provides a preliminary estimate based on linear footage and method.

1. Select Your Method: Choose Interior (managing water from the inside) or Exterior (stopping water from the outside).

2. Measure Linear Feet: Measure the length of the wall(s) affecting your basement.

3. Add Specifics: Input the number of window wells or sump pumps if applicable.

4. Get Your Estimate: The tool will generate a price range typical for Toronto and Southern Ontario areas.

If you just used our calculator, you might be wondering why waterproofing costs what it does in 2026. While raw material prices (concrete, membranes) have stabilized since the post-pandemic spike, skilled labor shortages in the GTA have pushed installation costs up by ~8% this year.

Why Waterproofing Prices Have Shifted

As we move into 2026, raw material costs for membranes and concrete in Ontario have stabilized, but skilled labor rates have increased. The table below provides a static snapshot of current market rates in the GTA to help you benchmark your quote.

For a deep dive into how labor shortages and new municipal rebates are affecting these numbers, read our full analysis: Why 2026 Waterproofing Costs Changed.

(Note: Prices include labor & materials. Calculate your specific home above.)

Waterproofing Budget Guide: Factors That Influence Your Quote

Why does one project cost $5,000 and another $25,000? These four factors will swing your waterproofing budget:

1. Linear Footage: The primary cost driver. Waterproofing one wall is significantly cheaper than a full perimeter wrap.

2. Depth of Foundation: A standard basement is 5- 6 feet deep. Deeper basements (7+ feet) require more excavation time and shoring safety measures, increasing labor costs.

3. Accessibility (GTA Specifics): If your Toronto home has a narrow gangway (less than 3 feet) between houses, machinery cannot be used. Hand-digging increases the timeline and labor cost for exterior work.

4. Obstructions: Decks, AC units, gas meters, or concrete walkways that need to be removed and replaced will add to the final price.

Regional pricing guide across Southern Ontario

Dryshield serves homeowners across a broad radius, and while base rates are consistent, the final installed cost often shifts by region due to bedrock, clay, water table, and job access.

Important: These are planning ranges. Your final quote depends on linear footage, foundation depth, access, soil type, and the correct solution (interior vs exterior waterproofing vs crack repair).

Local Rebates & Savings (2026)

We help homeowners across our service area apply for municipal flood prevention subsidies.

• Toronto & GTA: Up to $6,650 (Basement Flooding Protection Subsidy).
• Peel Region: Up to $700 – $1,500 (Sanitary Backwater Valve Rebate).
• Halton Region: Up to $6,500 (Enhanced Basement Flooding Prevention).
• Hamilton: Up to $2,000 (Protective Plumbing Program).
• St. Catharines: Up to $5,000 (FLAP Program).
• Durham Region: Interest-free loans and grants for sump pumps (varies by municipality).

Our Southern Ontario Service Network

Dryshield services a 200km radius around Toronto and the GTA. We have structured our teams into regional hubs to ensure fast response times and local employees for each area.