Deck Building Cost in Oshawa (2026)
Average cost in Oshawa
$8,000 — $45,000
$40 — $115 per sq ft
Cost Breakdown
ItemizedProfessional installation and framing
50%
Decking boards, joists, and hardware
40%
Grading, old deck removal, and disposal
6%
City of Oshawa building permit fees
2%
Blueprints and structural stamps
2%
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 9 sources and market data for Oshawa. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
$16,891
Today
$17,651
Deck Building in Oshawa is ↑ 4.5% compared to roughly a year ago — about $760 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 Deck Build Contractors in Oshawa
Verified providersModern Decks & Vinyl Fences
230 High St, Bowmanville, ON L1C 5G1, Canada
99 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, a permit is required in Oshawa if the deck is more than 600 mm (24 inches) above the adjacent finished grade or if it has a roof. Even if a permit isn't required, the deck must still comply with the City's Zoning By-Law setbacks, typically requiring a 0.6 m rear yard clearance.
Permit fees in Oshawa for 2026 typically range from $198 to $600 CAD. Fees are calculated based on the total area of the deck, and as of January 1, 2026, building permit fees saw a scheduled 3% increase.
Pressure-treated wood decks cost between $35 and $55 per sq ft installed. In contrast, premium composite options like Trex or Fiberon range from $65 to $95 per sq ft. While composite is roughly 60-80% more expensive upfront, it eliminates the $1-$3 per sq ft annual maintenance cost required for wood.
Professional deck builders in the Oshawa area currently charge between $18 and $40 per hour for skilled labor, though most contractors quote by the project. Labor typically accounts for 45% to 55% of the total project invoice.
📊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: 2 weeks 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.