Key Takeaways:
- A standard 300 sq ft deck costs $6,000–$45,000 installed in Canada
- Labour is 40–60% of total cost — and varies dramatically by province
- Hidden costs (permits, footings, railings) can add $2,000–$10,000 to your budget
- Building in the off-season (October–March) saves 15–25% on labour
- Composite decking has the best 20-year total cost when maintenance is factored in
What Does a Deck Actually Cost in 2026?
The most common question Canadian homeowners ask is "how much does a deck cost?" — and the answer depends on three variables: material choice, deck size, and where you live in Canada. This guide breaks down every cost component so you can budget accurately.
Material Costs Per Square Foot
The deck boards are only one part of the material cost. You also need substructure lumber, fasteners, footings, and railings.
| Material | Board Cost/sq ft | Total Material/sq ft | 300 sq ft Materials |
|---|---|---|---|
| Pressure-treated | $2–$5 | $8–$15 | $2,400–$4,500 |
| Cedar | $5–$12 | $12–$22 | $3,600–$6,600 |
| Composite | $6–$18 | $14–$28 | $4,200–$8,400 |
| PVC | $12–$22 | $18–$32 | $5,400–$9,600 |
| Ipê | $15–$35 | $22–$45 | $6,600–$13,500 |
| Aluminum | $20–$45 | $28–$55 | $8,400–$16,500 |
"Total material" includes decking boards, PT substructure lumber (joists, beams, posts), joist hangers and structural connectors, and basic hardware.
Labour Costs by Province
Labour is the single largest cost component — typically 40–60% of the total project.
| Province/Region | Labour/sq ft | 300 sq ft Labour |
|---|---|---|
| Atlantic Canada (NB, NS, NL, PEI) | $12–$18 | $3,600–$5,400 |
| Quebec | $15–$28 | $4,500–$8,400 |
| Ontario (outside GTA) | $18–$25 | $5,400–$7,500 |
| GTA/Toronto | $22–$35 | $6,600–$10,500 |
| Manitoba/Saskatchewan | $15–$24 | $4,500–$7,200 |
| Alberta | $18–$28 | $5,400–$8,400 |
| BC (outside Vancouver) | $20–$28 | $6,000–$8,400 |
| Vancouver | $28–$40 | $8,400–$12,000 |
Why the Range Is So Wide
Labour rates reflect local economics: cost of living, contractor demand, licensing requirements (RBQ in Quebec adds overhead), and seasonal availability. Vancouver contractors charge the most because the city's high cost of living, limited available land (smaller lots = harder access), and strong demand create a seller's market.
The Hidden Costs Nobody Mentions
1. Building Permits — $100–$500
Required for most decks over 24" above grade. Don't skip this — the consequences are severe.
2. Footings — $300–$3,600
The cost varies enormously by method and frost line depth:
- Sono tubes (DIY): $300–$500 for 12 footings
- Sono tubes (contractor): $1,000–$1,800
- Helical screw piles: $1,800–$3,600
In Winnipeg (frost line 1.8m), footing costs are 2–3x higher than in Vancouver (frost line 0.6m).
3. Railings — $1,500–$7,500
Often quoted separately from the deck surface. Wood railings start at $30/linear ft, glass railings reach $150/linear ft. A typical 300 sq ft deck has 50 linear feet of railing.
4. Stairs — $500–$3,000
Every raised deck needs stairs. A 5-step staircase in PT wood costs $500–$800 installed; in composite, $900–$1,500.
5. Staining (Wood Only) — $300–$900
First-year stain application for a 300 sq ft PT wood deck. Add $200–$400/year ongoing for re-staining.
6. Demolition of Old Deck — $500–$2,000
If you're replacing an existing deck, demolition and disposal costs $2–$5/sq ft.
7. Grading and Drainage — $200–$1,000
Proper grading under the deck prevents water pooling against the house foundation.
Total Project Cost Summary
| Deck Type (300 sq ft) | Materials | Labour | Hidden Costs | Total |
|---|---|---|---|---|
| PT Wood (Ontario) | $3,000 | $6,000 | $2,500 | $11,500 |
| Composite mid (Ontario) | $6,000 | $7,500 | $3,500 | $17,000 |
| PVC (Ontario) | $7,500 | $8,400 | $4,000 | $19,900 |
| Composite mid (Vancouver) | $6,000 | $10,000 | $3,500 | $19,500 |
| Aluminum (Ontario) | $12,000 | $9,000 | $4,500 | $25,500 |
How to Save Money on Your Deck
- Build in the off-season (October–March) — 15–25% lower labour because contractors are less busy
- Get 3+ quotes — pricing varies significantly between contractors
- Do your own demo — removing the old deck yourself saves $500–$2,000
- Choose standard sizes — custom shapes waste material and increase labour
- Skip the pergola initially — add it next year when budget allows
- Consider PT wood for now — upgrade the surface to composite in 10 years when the boards wear out (the substructure lasts longer)
Frequently Asked Questions
What's the cheapest way to build a deck?
A ground-level floating deck on deck blocks using pressure-treated wood — approximately $2,000–$4,000 for 100–150 sq ft. No deep footings required, and many municipalities don't require permits for ground-level floating decks.
Is it cheaper to build a deck yourself?
DIY saves 40–60% on labour. A 300 sq ft PT wood deck costs approximately $2,500–$4,500 in materials vs $6,000–$12,000 contractor-installed. However, mistakes can be expensive — especially with footings and the ledger board connection.
How much does a deck add to home value?
A quality deck returns 65–75% of its cost at resale according to the Appraisal Institute of Canada. A $17,000 composite deck adds approximately $11,000–$12,750 to your home's value.
When is the best time to build a deck?
Late winter booking for spring/summer construction. Contact contractors in February–March for a May–June build. This avoids the peak-season rush and gives time for permit processing.
Written by
BestDecks Editorial Team
Deck Construction Specialists
BestDecks Editorial Team writes about canadian deck builders — licensed local crews build custom decks in every city, backed by one bestdecks warranty and related topics for BestDecks.ca.
