Window Replacement Cost in London (2026)
Average cost in London
$8,000 — $35,000
$600 — $1,500 per sq ft
Cost Breakdown
ItemizedHigh-performance vinyl or fiberglass materials
60%
Professional fitting and sealing
35%
Removal of old units and site remediation
3%
Local municipal requirements and documentation
2%
HST at 13%
📋What's Included
ScopeTypically Includes
- Standard vinyl double-hung windows
- Removal of old windows
- Installation & insulation
- Interior trim
- Cleanup
Typically Excludes
- Custom or specialty shapes
- Triple-pane or premium glass
- Exterior trim or cladding
- Structural modifications
- Bay or bow windows
Based on replacing 10 standard-size windows with vinyl double-hung.
🧮Estimate Your Cost
InteractiveEstimated Cost
$4,040 — $6,060
Based on 8 sources and market data for London. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
$14,137
Today
$14,915
Window Replacement in London is ↑ 5.5% compared to roughly a year ago — about $778 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 Window Replace Contractors in London
Verified providersDouglas Window & Door Inc.
515 Hamilton Rd, London, ON N5Z 1S3, Canada
286 reviews
Riverbend Windows & Doors Inc.
3392 Wonderland Rd S Blg 2 Unit 2, London, ON N6L 1A8, Canada
127 reviews
Blake Exteriors Window and Door
127 Ann St, London, ON N6A 1R2, Canada
257 reviews
Forest City Window & Door Ltd
1708 Gore Rd, London, ON N5W 5L5, Canada
159 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
Retrofit (insert) installation typically costs $150–$250 in labor per unit, while a full Brick-to-Brick replacement costs $250–$500 per unit as it involves removing the entire frame and trim down to the studs.
Upgrading to triple-pane glass in 2026 typically adds a premium of $120 to $180 per window, but can reduce energy loss by up to 25% in Ontario's climate.
Yes, homeowners can stack federal and provincial incentives, such as the Enbridge Home Renovation Savings Program, which can provide rebates ranging from $5,000 to $10,000 for high-efficiency upgrades.
For a typical 3-bedroom home with 12–16 windows, homeowners should budget between $8,500 and $14,000 for quality vinyl, or up to $22,000 for premium fiberglass options.
📊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: 4 days 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.