Cost of Deck Building in London, ON
Construction of a new outdoor deck including footings, framing, decking, and railing
Prices are estimates for London, ON as of 2026. Actual costs vary based on project specifics.
What Affects Deck Building Cost in London?
London is in the Southwestern Ontario region of ON. Local costs are 10% below the Canadian national average, driven by local labour rates, material availability, and demand for skilled trades.
Timeline & Planning
Typical Timeline
1-3 weeks
Permits
A building permit is typically required in London. Check with your local building department.
Best Time to Book
Best pricing in late winter; construction season April-November
Compare Deck Building Costs Across Cities
| City | Low | Average | High | vs London |
|---|---|---|---|---|
| London, ON | $27 | $50 | $86 | — |
| Winnipeg, MB | $27 | $50 | $86 | 0% |
| St. John's, NL | $27 | $50 | $86 | 0% |
| Quebec City, QC | $26 | $48 | $84 | -2% |
| Laval, QC | $28 | $51 | $87 | +2% |
| Halifax, NS | $28 | $51 | $87 | +2% |
Frequently Asked Questions
How much does deck building cost in London?
In London, deck building typically costs between $27 and $86 per sq ft in 2026. The average homeowner pays around $50 per sq ft.
What factors affect deck building costs in London?
Key factors include: Deck size and height, Material (pressure-treated vs composite vs cedar), Railing style and material, Stairs and multi-level design, Permit requirements, Site preparation. London prices are below the Canadian average due to local labour and material costs.
Do I need a permit for deck building in London?
Yes, deck building typically requires a building permit in London. Contact your local building department for specific requirements and fees.
How do I save money on deck building in London?
Get at least 3 quotes from licensed contractors. Best pricing in late winter; construction season April-November Consider bundling multiple projects. Ask about off-season discounts and whether materials can be sourced more affordably.
How do I find a good contractor in London?
Check reviews on HomeStars, Google, and the Better Business Bureau. Verify licenses and insurance. Ask for references from recent local projects. Never pay more than 10-15% upfront.