Basement Waterproofing Cost in Hamilton (2026)
Average cost in Hamilton
$3,500 — $25,000
$70 — $300 per sq ft
Cost Breakdown
ItemizedExcavation, backfill, and installation
65%
Membranes, weeping tiles, and gravel
25%
Soil grading and surface repair
5%
City of Hamilton plumbing permits
5%
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 Cost
InteractiveEstimated Cost
$6,528 — $9,792
Based on 12 sources and market data for Hamilton. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
$11,722
Today
$10,550
Basement Waterproofing in Hamilton is ↓ 10.0% compared to roughly a year ago — about $1,172 less 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 Hamilton
Verified providersDirect Waterproofing Hamilton
21 King St W 5th Floor, Hamilton, ON L8P 4W7, Canada
111 reviews
Aquamaster Basement Waterproofing Hamilton
13 Delena Ave S, Hamilton, ON L8H 1B7, Canada
144 reviews
Aquatech Basement Waterproofing Hamilton
180 James St S Ste 204, Hamilton, ON L8P 4V1, Canada
113 reviews
Royal Work Waterproofing
7 Village Dr, Hamilton, ON L8E 3M7, Canada
139 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 Protective Plumbing Program (3P) offers grants up to $2,000 for the installation of backwater valves and sump pumps. To receive the full amount, homeowners must use a city-pre-qualified contractor; otherwise, the rebate is capped at $500.
Hamilton is known for 'heavy clay' soil, which is significantly harder to excavate than sandy soil. This typically increases labor costs by 15-20% for exterior projects compared to other regions in Ontario.
In 2026, exterior waterproofing in Hamilton typically ranges from $100 to $300 per linear foot, depending on the depth of the foundation and accessibility of the site.
While simple exterior repairs may not require a permit, the installation of a backwater valve or a sump pump tied to the municipal system requires a plumbing permit, which costs between $150 and $300.
📊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: 2 weeks 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.