Detailed cost breakdown for windows renovation in London, Ontario.
Budget Range
$3,823 - $8,793
Average Cost
$5,463 - $12,563
Premium Range
$8,740 - $20,102
| Category | Low Estimate | High Estimate |
|---|---|---|
| Windows | $2,850 | $6,412 |
| Installation | $1,425 | $3,206 |
| Interior Trim | $570 | $1,425 |
| Weatherstripping | $190 | $475 |
| Old Window Disposal | $285 | $665 |
| Permits | $143 | $380 |
| Total | $5,463 | $12,563 |
Window replacement in Canada should prioritize energy efficiency — look for ENERGY STAR® certified windows rated for your climate zone. Double-pane is minimum; triple-pane is recommended for zones 2 and 3 (most of Canada). Argon or krypton gas fill between panes adds 10–15% to cost but significantly improves insulation. Replace all windows at once if possible — contractors offer better per-window pricing for full-house jobs.
Window frame material is the largest cost factor: vinyl ($400–800/window), fiberglass ($600–1,200), aluminum-clad wood ($800–1,500), and full wood ($1,000–2,000+). Unusual sizes, bay/bow windows, and casement styles cost 30–100% more than standard double-hung. Installation complexity (brick vs. wood siding, second-floor access) affects labour costs.
💡 Pro Tip
Check for federal and provincial rebates before purchasing — the Canada Greener Homes Grant and provincial programs can cover $125–250 per window for ENERGY STAR® upgrades, potentially saving $2,000–$5,000 on a full-house replacement.
London, Ontario offers renovation costs 15–20% below Toronto, making it one of the best-value markets in the province. The city's mix of Victorian homes in Old North and Wortley Village alongside newer suburban developments provides diverse renovation opportunities. Western University's presence creates steady demand for rental property upgrades. Contractor availability is generally good with 2–4 week lead times.
The City of London requires permits for structural, plumbing, electrical, and HVAC work. Applications are processed through the Development and Compliance Services division. Simple residential permits are issued within 10 business days. London offers a pre-consultation service for complex projects.
London sits in southwestern Ontario's snow belt, receiving 194 cm of snow annually — significantly more than Toronto. This heavy snowfall means roofing must handle greater snow loads, and ice dam prevention is critical. The humid summers require proper ventilation in any renovation, especially basements.
In 2026, a windows renovation in London costs between $3,823 (budget) and $20,102 (premium). The average standard cost ranges from $5,463 to $12,563.
London has a cost index of 95% relative to the Canadian national average. Prices are near the Canadian average. This index accounts for local labour costs, materials, and permit fees.
A standard windows renovation typically takes 1 to 3 days per window. Premium projects or unexpected issues (e.g. structural problems) can extend the timeline. Always get a detailed schedule from your contractor.
A windows renovation typically yields a 70–80% return on investment at resale in Canada. ROI depends on material quality, the local real estate market in London, and the property's condition.