Deck Building Cost in St. John's (2026)
Average cost in St. John's
$7,000 — $40,000
$35 — $130 per sq ft
Cost Breakdown
ItemizedProfessional installation and framing
50%
Lumber, composite boards, and fasteners
40%
Excavation and concrete footings
7%
City application and development fees
2%
Removal of old deck and debris
1%
HST at 15%
📋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
$5,568 — $8,352
Based on 12 sources and market data for St. John's. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
$16,491
Today
$17,250
Deck Building in St. John's is ↑ 4.6% compared to roughly a year ago — about $759 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 St. John's
Verified providersMaclntyre Homes & Renovations
28 Collingwood Crescent, Mount Pearl, NL A1N 5C6, Canada
1 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 building permit is required for any new deck or modification to an existing one. The City of St. John's charges a $150 general application fee plus a development fee of $8 per square metre for residential extensions above grade.
According to the National Building Code of Canada, any deck higher than 2 feet (0.6 meters) above grade requires an engineer's design. Additionally, guardrails must be 36 inches high for lower decks and 42 inches high if the deck is more than 6 feet off the ground.
In St. John's, pressure-treated wood decks typically cost $35–$50 per sq ft installed, while composite options like Trex range from $55–$95 per sq ft. While composite is roughly 60% more expensive upfront, it saves an estimated $300–$800 annually in maintenance costs.
Yes, the City of St. John's requires a $1,000 refundable deposit for residential landscaping to be paid prior to the permit being issued, ensuring the property is restored to code after construction.
📊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.