Basement Waterproofing Cost in Windsor (2026)
Average cost in Windsor
$4,800 – $38,500
$115 – $325 per sq ft
In Windsor, the average is $12,791 and most projects cost between $4,800 and $38,500, or about $115 – $325 per sq ft. Prices are before tax and based on 12 sources.
Cost Breakdown
ItemizedManual and machine digging to foundation footings
55%
Rubberized membranes, weeping tiles, and drainage boards
25%
Mechanical flood prevention and sewer backup devices
12%
City of Windsor plumbing and building permits
5%
Backfilling, grading, and minor landscaping
3%
HST at 13%
📋What's Included
ScopeTypically Includes
- Interior drain tile system
- Sump pump installation
- Vapor barrier
- Crack injection sealing
- Labor
Typically Excludes
- Exterior excavation waterproofing
- Foundation repair
- Mold remediation
- Dehumidifier
- Landscaping restoration
Based on interior waterproofing for a standard 800-1,000 sq ft basement.
🧮Estimate your project
LiveYour estimate in Windsor
Likely range $5,756 – $28,140
- Excavation & Labor55%$7,035
- Waterproofing Materials25%$3,198
- Sump Pump & Backwater Valve12%$1,535
- Permits & Inspections5%$640
- Site Restoration3%$384
Interior sealant
$12,791
Interior drainage / weeping tile
$20,466
Exterior excavation
$30,699
Calibrated to 12 researched sources for Windsor. Before tax. Real quotes vary with site conditions.
📈Price Momentum
Year-over-year~1 year ago
$12,276
Today
$12,791
Basement Waterproofing in Windsor is ↑ 4.2% compared to roughly a year ago — about $516 more on the average project.
Comparison derived from the year-over-year change rate, not a month-by-month price index. We don't store historical snapshots yet — when we do, this will become a real time series.
🏢Top Waterproofing Contractors in Windsor
Verified providersDry-Rite Basement Waterproofing and Concrete Raising
700 Talbot Rd, Maidstone, ON N0R 1K0, Canada
287 reviews
JSM Construction Limited
988 Watson Ave, Windsor, ON N8S 3T2, Canada
134 reviews
DC Basement Waterproofing
2221 Dougall Ave, Windsor, ON N8X 1S7, Canada
403 reviews
Provider data sourced from public business directories. Ratings and reviews are public and may change. LookupCost is not affiliated with listed providers.
💬What People Actually Paid
Community❓Common Questions
Yes, the Basement Flooding Protection Subsidy Program (BFP) provides up to $3,500 per property. This covers 100% of the cost for backwater valves (up to $1,450) and sump pumps with overflow systems (up to $2,000).
In 2026, a backwater valve installation costs between $1,600 and $3,700. Homeowners can significantly offset this with the municipal subsidy, which covers up to $1,450 of the total invoice.
Windsor's heavy clay soil retains high levels of moisture and is physically harder to excavate than sandy soils. This typically increases labor and excavation costs by 15% to 20% compared to other regions in Ontario.
Interior drainage systems typically cost $70 to $150 per linear foot, while full exterior excavation and membrane systems range from $150 to $325 per linear foot due to the extensive labor and equipment required.
📊Our Methodology
How we collect dataAggregated from 5+ verified web sources and cost databases
Licensed contractor estimates and regional cost guides
Government construction and labor statistics
Community-reported project costs and reviews
Last data collection: 1 months ago. Updates run weekly. All costs in CAD.
About this data
Cost figures are estimates synthesized from public market data using AI research and refreshed regularly. Real project costs vary by scope, materials, contractor, and site conditions. Always get verified quotes from licensed contractors for your specific project.
Spotted bad data? Let us know — we'll review and update.