Deck Building Cost in Oshawa (2026)
Average cost in Oshawa
$5,000 — $45,000
$30 — $100 per sq ft
Cost Breakdown
ItemizedDecking boards, framing, and hardware
45%
Professional installation and carpentry
45%
Municipal permits and structural drawings
5%
Excavation, concrete footings, and disposal
5%
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
$6,408 — $9,612
Based on 6 sources and market data for Oshawa. Actual costs may vary depending on specific project requirements.
🏢Top Deck Build Contractors in Oshawa
Verified providersModern Decks & Vinyl Fences
230 High St, Bowmanville, ON L1C 5G1, Canada
96 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
In 2026, a standard 200 sq. ft. deck in Oshawa typically costs between $7,000 and $12,000 for pressure-treated wood, and $15,000 to $22,000 for premium composite materials.
Yes, if your deck is over 24 inches (60 cm) off the ground or attached to your house, you need a building permit from the City of Oshawa. Permit fees and professional design drawings typically add $350 to $1,000 to your total project cost.
Pressure-treated wood is the most affordable option, costing $30 to $50 per square foot installed. Composite decking, which requires less maintenance and withstands Ontario winters better, ranges from $60 to $100+ per square foot installed.
Labor typically accounts for 40% to 50% of the total deck building budget in Ontario. Complex designs, such as multi-level structures, custom stairs, or built-in seating, will push labor costs to the higher end of that spectrum.
📊Our Methodology
How we collect dataAggregated from 6+ 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.