Deck Building Cost in Ottawa (2026)
Average cost in Ottawa
$8,000 — $75,000
$35 — $130 per sq ft
Cost Breakdown
ItemizedProfessional installation and framing
50%
Decking boards, joists, and hardware
38%
Leveling, footings, and old deck removal
8%
City of Ottawa fees and structural plans
4%
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
$6,240 — $9,360
Based on 12 sources and market data for Ottawa. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
$24,442
Today
$26,031
Deck Building in Ottawa is ↑ 6.5% compared to roughly a year ago — about $1,589 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 Ottawa
Verified providersProvider 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 (60 cm) above grade, attached to the house, or serves the principal entrance. In 2026, the City of Ottawa charges a minimum permit fee of $117.
For 2026, permit fees are calculated at $12.75 per $1,000 of construction value. For a mid-range $25,000 deck project, the permit fee would be approximately $318.75.
Pressure-treated wood decks typically range from $35 to $55 per sq ft installed. Composite options like Trex or TimberTech are significantly higher, ranging from $65 to $95 per sq ft, but offer a 25-30 year lifespan with minimal maintenance.
The peak season is May through October. To secure 2026 pricing and avoid the 10-15% peak-season surcharges, it is recommended to book by March or April, as permit processing can take 2-4 weeks.
📊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: 3 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.