Deck Building Cost in St. John's (2026)
Average cost in St. John's
$6,500 – $58,000
$35 – $135 per sq ft
In St. John's, the average is $22,115 and most projects cost between $6,500 and $58,000, or about $35 – $135 per sq ft. Prices are before tax and based on 9 sources.
Cost Breakdown
ItemizedProfessional installation and framing
48%
Decking boards, railings, and fasteners
38%
Footings set below 1.5m frost line
10%
City of St. John's application fees
4%
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 project
LiveYour estimate in St. John's
Likely range $9,952 – $48,653
- Labor48%$10,615
- Materials38%$8,404
- Foundation10%$2,212
- Permits & Design4%$885
Pressure-treated Wood
$22,115
Cedar
$30,054
Composite
$37,992
Hardwood (Ipe)
$51,885
Calibrated to 9 researched sources for St. John's. Before tax. Real quotes vary with site conditions.
📈Price Momentum
Year-over-year~1 year ago
$21,062
Today
$22,115
Deck Building in St. John's is ↑ 5.0% compared to roughly a year ago — about $1,053 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 providersRock Bound Painting Ltd
16 MacLaren Pl, St. John's, NL A1B 5E1, Canada
85 reviews
New City Construction & Welding Inc
98 Glenview Terrace, St. John's, NL A1E 3H7, Canada
6 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 St. John's, footings must be set at a minimum depth of 1.5 meters (approximately 5 feet) to account for the local frost line and prevent structural shifting during the 70+ annual freeze-thaw cycles.
Permit fees are typically based on construction value. For projects under $100,000, the rate is $9 per $1,000 of value, with a minimum fee of $50. Most residential deck permits range between $200 and $400.
Due to the 1,500mm of annual precipitation and high moisture levels, PVC and high-end composite materials are highly recommended. While they cost $45–$85 per sq ft installed compared to $25–$40 for pressure-treated wood, they resist rot and eliminate the need for annual staining.
Yes, the City of St. John's requires a permit for any modification to your property, including decks. Specifically, any deck more than 24 inches (60 cm) above grade or attached to the house must strictly adhere to National Building Code inspections.
📊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: 1 months 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.