Water Damage Cost Calculator

See what a single basement flood or ongoing water damage could cost you — versus the price of waterproofing it today.

💧 The average unaddressed basement water damage claim in Ontario costs $43,000+ — often only partially covered by insurance.

1. What is the approximate size of your basement?

2. Is your basement finished?

Unfinished (concrete walls, no flooring) Partially finished (some drywall or flooring) Fully finished (drywall, flooring, ceiling)

3. What do you store or have in your basement?

Furnace / HVAC / hot water heater Electrical panel / wiring Furniture or appliances Personal valuables, documents, or electronics Existing mould or musty smell

4. What level of water damage are you concerned about?

Ongoing seepage — damp walls, minor recurring moisture Minor flood — a few inches of water after a heavy storm Major flood — significant water accumulation or sewer backup

5. Do you have basement water / sewer backup coverage on your home insurance?

Yes — full overland and sewer backup coverage Partial coverage or not sure No coverage

Please answer all questions before calculating.

Estimated water damage cost if left unaddressed:

Your estimated out-of-pocket exposure after insurance:

Cost Breakdown

Damage Category	Estimated Cost (CAD)
Total Estimated Damage

Waterproofing now costs a fraction of water damage repair.

Get a free on-site assessment and exact quote from Canada Waterproofers. Most jobs can be completed in 1–2 days.

Book My Free Inspection →

📞 416-333-LEAK

© 2026 Canada Waterproofers. Estimates are based on average GTA contractor and restoration costs and are for illustrative purposes only. Actual costs vary by contractor, extent of damage, and insurance coverage. Not a guarantee of insurance payout.