How Much Does a Deck Cost in Quebec in 2026?
- Average price: $4,500 to $22,000 depending on material and size
- Pressure-treated wood: most affordable (~$60–90/sq ft)
- Composite or aluminum: more durable, 2–3× more expensive
- Labour: 35–55% of total cost
- Permit required in most municipalities
Average Deck Cost in Quebec
In 2026, the cost of a deck in Quebec typically ranges from $4,500 to $22,000, installation included. The wide range comes down to material choice, square footage, layout complexity, and region.
Here is a reference price grid for a standard 200 sq ft deck:
| Material | Price per sq ft | Estimated total (200 sq ft) | Lifespan |
|---|---|---|---|
| Pressure-treated wood (pine, spruce) | $60 – $90 | $12,000 – $18,000 | 15–25 yrs |
| Cedar or ipe | $85 – $130 | $17,000 – $26,000 | 20–30 yrs |
| Composite (Trex, TimberTech) | $110 – $160 | $22,000 – $32,000 | 25–30 yrs |
| Aluminum (Rinox, Structurite) | $130 – $200 | $26,000 – $40,000 | 40+ yrs |
| PVC / vinyl | $95 – $145 | $19,000 – $29,000 | 20–25 yrs |
* Prices include framing, decking, and installation. Railings, stairs, and helical pile foundations are additional.
6 Factors That Affect the Price
1. Decking material
Material is the biggest cost driver. Pressure-treated wood is the most affordable but requires annual maintenance (cleaning, staining). Composite eliminates maintenance at a higher upfront cost. Aluminum is virtually maintenance-free and handles Quebec winters exceptionally well.
2. Size and layout
Larger decks have a slightly lower per-square-foot cost due to labour economies of scale. An L-shape, multi-level deck, or a covered section will cost more than a simple rectangle.
3. Height and foundations
A ground-level deck is the cheapest to build. Once it exceeds 18 inches (45 cm) off the ground, you need a guardrail (required by building code) and often helical pile foundations. Budget $600–$1,200 per pile depending on frost depth.
4. Add-ons
- Stairs: $800–$2,500 depending on steps and material
- Railings: $80–$200/linear ft (glass, cable, or aluminum)
- Pergola or roof: $3,000–$12,000
- Built-in lighting: $500–$2,000
5. Labour
Labour typically represents 35–55% of the total cost. An experienced carpenter in Quebec charges between $55 and $95/hour, or a flat rate based on complexity. Don't push too hard on labour — a poorly built deck creates costly structural or drainage problems down the road.
6. Region
Prices are generally 10–20% higher in Greater Montreal than in Abitibi or Saguenay, due to labour market conditions and demand.
Pressure-Treated vs Composite: Which Should You Choose?
- ✓ Lowest upfront cost
- ✓ Easy to work with, repairable
- ✗ Annual maintenance required
- ✗ Cracks and greys over time
- ✗ Risk of splinters
Best for: tight budget, shorter-term projects, or if you don't mind maintenance.
- ✓ Zero maintenance (just rinse)
- ✓ UV and moisture resistant
- ✓ No splinters
- ✗ 2× higher upfront cost
- ✗ Retains more heat in summer
Best for: long-term investment, owners who want zero upkeep.
Do You Need a Permit in Quebec?
In the vast majority of Quebec municipalities, yes. A permit is typically required if the deck:
- Exceeds 10 m² (about 107 sq ft), or
- Is attached to the house, or
- Exceeds 60 cm in height
Permit cost ranges from $100 to $600 depending on the municipality and size. A serious carpenter will help determine whether a permit is needed and prepare plans if required.
⚠ A deck built without a permit can block the sale of your home and expose you to liability if an accident occurs.
How to Get the Best Price
- Get at least 3 quotes from different carpenters. Prices can vary by 20–40% for the same project.
- Plan in fall or winter for a spring build. Schedules are less full and some contractors offer off-season discounts.
- Verify your contractor's RBQ licence. Any deck attached to a house requires a licensed contractor (sub-category 1.1.1 or 1.3.1).
- Ask for references and photos of similar projects.
- Avoid large upfront deposits. A 10–25% deposit is normal; over 50% before work starts is a red flag.
Frequently Asked Questions
Yes, if the deck is not attached to the house and stays within certain size limits. For an attached deck, a licensed RBQ contractor is legally required in Quebec.
A simple 200 sq ft deck typically takes 2–5 business days. A multi-level deck with a pergola can take 2–3 weeks.
Yes. A well-built deck returns roughly 65–75% of its cost in property value, according to CMHC data.
Ideally May through October, but plan your project in winter to ensure a contractor is available come spring.
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