Window Replacement Cost in St. John's (2026)
Average cost in St. John's
$3,600 — $24,300
$450 — $1,620 per sq ft
Cost Breakdown
ItemizedWindow units, frames, and hardware
60%
Professional installation and sealing
30%
Removal of old units and debris
5%
City permits and interior/exterior trim
5%
HST at 15%
📋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
$3,760 — $5,640
Based on 12 sources and market data for St. John's. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
$10,113
Today
$10,578
Window Replacement in St. John's is ↑ 4.6% compared to roughly a year ago — about $465 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 St. John's
Verified providersUniglassPlus / Ziebart - St. John's
439 Kenmount Rd, St. John's, NL A1B 4G1, Canada
164 reviews
Eastern Siding & Window World
5 Thomas Byrne Dr, Mount Pearl, NL A1N 0A6, Canada
78 reviews
PW Windows Doors & Hardware Ltd
161 Glencoe Dr, Mount Pearl, NL A1N 4S7, Canada
19 reviews
Newfoundland Glass & Service
Tara Place, 31 Peet St, St. John's, NL A1B 3W8, Canada
42 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, due to the high wind and moisture levels in NL, triple-pane windows with a high Energy Rating (ER) are standard. Upgrading to triple-pane typically adds approximately $200 per unit but is essential for long-term energy savings in the North Atlantic climate.
The City of St. John's strictly enforces National Building Code egress standards. For bedrooms, windows must provide an unobstructed opening of at least 0.35 m² (3.8 sq. ft.). Notably, the city typically only accepts side-hinged windows for egress, as top-hinged 'hopper' styles can hinder escape.
Yes, the Home Energy Savings Program (HESP) provides grants up to $5,000 for energy-efficient retrofits to low-income households. Additionally, the Provincial Home Repair Program (PHRP) offers forgivable loans up to $5,000 for structural repairs, including window replacement for eligible residents.
Window replacement in St. John's is approximately 10% lower than the national average. While labor rates are competitive, shipping costs for premium materials can occasionally offset these savings compared to mainland provinces like Ontario.
📊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.