Deck Building Cost in London (2026)
Average cost in London
$5,000 — $35,000
$35 — $85 per sq ft
Cost Breakdown
ItemizedDecking boards, framing lumber, hardware
45%
Site prep, framing, and installation
45%
Concrete footings and posts
7%
City of London building permits
3%
HST at 13%
📋What's Included
ScopeTypically Includes
- Pressure-treated lumber
- Concrete footings
- Railing system
- Stairs (1 set)
- Hardware & fasteners
- Labor
Typically Excludes
- Composite or hardwood decking
- Built-in seating or planters
- Pergola or roof
- Lighting
- Permits
Based on a standard 200 sq ft pressure-treated wood deck.
🧮Estimate Your Cost
InteractiveEstimated Cost
$5,960 — $8,940
Based on 8 sources and market data for London. Actual costs may vary depending on specific project requirements.
🏢Top Deck Build Contractors in London
Verified providersCreative Custom Decks Inc.
3551 White Oak Rd Suite 324, London, ON N6L 1R1, Canada
72 reviews
Hickory Dickory Decks - London
37 Cedarwood Crescent, London, ON N6H 5P5, Canada
37 reviews
Grandview Contractors Ltd.
6496 Heathwoods Ave, London, ON N6P 0J7, Canada
52 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
A standard 200 sq ft deck in London typically costs between $7,000 and $15,000 CAD, depending on whether you use pressure-treated wood or composite materials.
Yes, the City of London requires a building permit for decks that are more than 24 inches (600mm) above ground level, or if they are attached to the house. Permit fees generally range from $200 to $500.
Pressure-treated wood is the most affordable option, costing around $35 to $45 per square foot installed. Composite decking is more durable and requires less maintenance, but costs between $60 and $85+ per square foot installed.
Labor costs for deck building in Ontario typically range from $30 to $75 per square foot, or about $50 to $85 per hour, making up roughly 45% to 50% of the total project cost.
📊Our Methodology
How we collect dataAggregated from 8+ 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: today. Updates run weekly. All costs in CAD.