Deck Building Cost in Oshawa (2026)
Average cost in Oshawa
$7,500 — $55,000
$35 — $115 per sq ft
Cost Breakdown
ItemizedProfessional installation and framing
50%
Decking boards, fasteners, and joists
40%
City of Oshawa fees and structural drawings
4%
Excavation, footings, and waste removal
6%
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
$19,462
Today
$20,338
Deck Building in Oshawa is ↑ 4.5% compared to roughly a year ago — about $876 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
97 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 if the deck is more than 24 inches (600 mm) above the ground, is attached to the house, or exceeds 108 square feet (10 m²) in total area.
Permit fees are based on construction value, typically costing $12–$15 per $1,000 of project value. Most residential deck permits range from $150 to $900, plus potential costs for engineered drawings ($500–$2,000).
Pressure-treated wood typically costs $35–$55 per sq ft installed, while premium composite or PVC decking ranges from $60–$115 per sq ft. Composite saves an estimated $6,500 in maintenance costs over 15 years.
Yes, peak construction season (June–August) often sees a 5–15% price premium due to high demand. Booking a 'pre-season' build in early spring or late fall can result in significant labor savings.
📊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.