Deck Cost in Montreal — 2026 Complete Price Guide
Planning a deck project in Montreal? Understanding the full cost breakdown is the first step. At Nael Construction, Montreal’s trusted renovation contractor, we’ve built hundreds of decks across the Greater Montreal area — from small urban patios to large multi-level entertaining spaces. This guide breaks down every cost factor so you can budget with confidence. Get a free estimate for your deck project.
Average Deck Cost in Montreal (2026)
The average cost of a deck in Montreal ranges from $25 to $85 per square foot installed, depending on material, size, and design complexity. Here’s the quick breakdown:
- Pressure-treated wood deck: $25–$45/sqft — A 200 sqft deck costs $5,000–$9,000
- Cedar deck: $40–$65/sqft — A 200 sqft deck costs $8,000–$13,000
- Composite deck (standard): $45–$65/sqft — A 200 sqft deck costs $9,000–$13,000
- Composite deck (premium, Trex/PVC): $60–$85/sqft — A 200 sqft deck costs $12,000–$17,000
- Multi-level or custom deck: $70–$120/sqft — Complex designs with stairs, railings, and built-in features
For a typical Montreal backyard deck of 200–300 square feet, most homeowners spend between $8,000 and $20,000 all-inclusive.
Deck Cost Breakdown by Material
Your decking material is the single biggest cost driver. Here’s how each option compares for Montreal homes:
Pressure-Treated Wood
The most budget-friendly option at $25–$45/sqft installed. Pressure-treated lumber resists rot and insects but requires annual staining in Montreal’s climate. Lifespan: 15–20 years with proper maintenance. Best for: budget-conscious homeowners who don’t mind upkeep.
Cedar Decking
A premium natural wood at $40–$65/sqft installed. Cedar is naturally rot-resistant and offers beautiful warm tones. It’s softer than pressure-treated wood, so it dents and scratches more easily. Requires sealing every 1–2 years. Lifespan: 20–25 years. Best for: homeowners wanting natural beauty with moderate maintenance.
Composite Decking
Engineered from wood fibres and plastic, composite decking costs $45–$85/sqft installed. It won’t rot, warp, or splinter — ideal for Montreal’s freeze-thaw cycles. No staining or sealing required. Lifespan: 25–30+ years. Best for: low-maintenance, long-term value. See our detailed composite vs wood deck comparison for a full breakdown.
PVC Decking
100% synthetic decking at $60–$90/sqft installed. Completely moisture-proof — the best choice for decks near pools or in humid areas. Premium brands like Azek and TimberTech offer 30–50 year warranties. Best for: maximum durability and waterproofing.
Deck Cost by Size
Deck size directly impacts total cost. Here’s what to expect for common Montreal deck sizes:
- 100 sqft (small patio deck): $2,500–$9,000
- 200 sqft (standard backyard deck): $5,000–$17,000
- 300 sqft (large entertaining deck): $7,500–$25,500
- 400 sqft (multi-level or wraparound): $10,000–$34,000
- 500+ sqft (custom outdoor living space): $12,500–$42,500+
Larger decks benefit from economies of scale on materials but may require additional structural support, multi-level designs, or custom features that add cost.
Additional Cost Factors
Permits and Engineering
In Montreal, decks under 60cm (24 inches) above grade typically don’t require a permit. Decks above 60cm, attached to the house, or with a roof need a borough permit. Permit costs range from $200–$500 depending on the borough. We handle all permit applications for our clients. Check our Montreal deck builder guide for borough-specific requirements.
Railings and Stairs
- Wood railings: $40–$80 per linear foot
- Aluminum railings: $60–$120 per linear foot
- Glass panel railings: $100–$200 per linear foot
- Cable railings: $80–$150 per linear foot
- Stairs: $150–$400 per step (material-dependent)
Site Preparation
- Demolition and removal of old deck: $500–$2,000
- Ground levelling and grading: $500–$1,500
- Helical pier foundations (recommended for Montreal clay soil): $200–$400 per pier
- Concrete deck blocks: $25–$50 per block (budget option)
Built-In Features
- Built-in bench seating: $500–$2,000
- Planter boxes: $200–$800 each
- Integrated lighting: $1,500–$6,000
- Pergola or shade structure: $3,000–$20,000 (see our pergola construction guide)
- Skirting (hiding the space under the deck): $500–$2,500
10-Year Total Cost of Ownership
Upfront cost isn’t the full picture. Maintenance over time adds significantly:
- Pressure-treated wood (200 sqft): $7,000 install + $3,000 maintenance (staining × 10 years) + $500 repairs = $10,500 total
- Cedar (200 sqft): $10,500 install + $2,000 maintenance + $800 repairs = $13,300 total
- Composite (200 sqft): $11,000 install + $200 maintenance (occasional washing) + $0 repairs = $11,200 total
- PVC (200 sqft): $15,000 install + $100 maintenance + $0 repairs = $15,100 total
After 10 years, composite decking is often cheaper than cedar when you factor in maintenance. After 15 years, composite beats pressure-treated wood on total cost.
How to Save on Your Deck Project
- Choose pressure-treated wood if budget is tight — it’s the most affordable upfront option
- Keep the design simple — rectangular decks cost less than multi-level or curved designs
- Build in the off-season — some contractors offer 5–10% discounts for fall/winter projects
- Bundle with other projects — combining a deck with a patio construction or fence installation can reduce overall costs
- Skip premium brands — mid-range composite decking performs nearly as well as premium lines at 20–30% lower cost
- Use deck blocks instead of helical piers — saves $150–$300 per foundation point (only for low-ground decks)
Deck Building Timeline in Montreal
A typical deck project takes 1–2 weeks of construction time, depending on size and complexity:
- Consultation and design: 1–2 weeks
- Permit application: 1–4 weeks (borough-dependent)
- Material delivery: 1 week after order
- Construction: 3–10 days (size-dependent)
- Final inspection and cleanup: 1 day
Book early — Montreal’s construction season runs May through October, and reputable contractors are booked months in advance.
FAQ: Deck Cost in Montreal
How much does a 200 sqft deck cost in Montreal?
A 200 sqft deck in Montreal costs between $5,000 and $17,000 installed, depending on the material. Pressure-treated wood is the cheapest at $5,000–$9,000, while premium composite or PVC runs $12,000–$17,000.
Do I need a permit to build a deck in Montreal?
Decks under 60cm (24 inches) above ground level typically don’t require a permit in Montreal. Decks above 60cm, attached to your house, or with a roof structure need a borough permit ($200–$500). Your contractor should handle the permit application.
Is composite decking worth the extra cost in Montreal?
Yes, for most homeowners. Composite decking costs 2–3x more upfront than pressure-treated wood, but requires virtually no maintenance. Over 10–15 years, the total cost of ownership is similar or lower, and composite lasts 25–30+ years vs 15–20 for wood.
What’s the cheapest deck material for Montreal?
Pressure-treated wood is the cheapest decking material at $25–$45 per square foot installed. A basic 200 sqft pressure-treated deck costs around $5,000–$9,000. Cedar is the next step up at $40–$65/sqft.
How long does a deck last in Montreal’s climate?
Deck lifespan in Montreal depends on material: pressure-treated wood lasts 15–20 years, cedar 20–25 years, composite 25–30+ years, and PVC 30–50 years. Montreal’s freeze-thaw cycles and heavy snow accelerate wood deterioration, making composite and PVC increasingly popular.
Get Your Deck Estimate
Ready to build your deck? Nael Construction designs and builds custom decks across Montreal and the West Island. We handle permits, foundations, materials, and construction — you enjoy the result. Get a free deck estimate today.
Related: Montreal Deck Builder Guide | Composite vs Wood Deck | Patio Construction Montreal | Outdoor Living Spaces