Deck Cost Breakdown
Where Does Your Money Go? Complete 2026 Pricing

The average Canadian deck costs between $15,000 and $35,000 fully installed. But that number varies enormously based on size, material, complexity, and location. Here's where every dollar goes.

Cost breakdown for a typical 300 sq ft deck:

Materials are your biggest variable cost. Here's what to expect in 2026 at Canadian retailers:

Labour is typically 40–60% of your total deck cost. Rates vary significantly by region:

Labour rates include framing, decking installation, railings, stairs, and basic cleanup. Complex designs (curves, multiple levels, built-in features) add 20–40% to labour costs.

Budget $200–$800 for permits and related fees:

• Building permit: $100–$500 (varies by municipality and project value)
• Site survey (if required): $200–$500
• Engineering stamp (for complex designs): $500–$1,500
• Inspection fees: Usually included in permit cost
• Zoning variance (if needed): $500–$2,000+

These costs catch many Canadian homeowners off guard:

• Demolition of old deck: $500–$2,000 depending on size
• Grading and drainage: $500–$1,500 if your yard slopes toward the house
• Rocky soil: Helical piles instead of Sonotubes can add $1,000–$3,000
• Ledger board repair: If the existing band joist is rotted, expect $500–$2,000 to repair
• Electrical for lighting: $200–$800 for a dedicated outdoor circuit
• HST/GST: 13% in Ontario, 5% GST in Alberta/BC — a $30,000 deck adds $1,500–$3,900 in tax
• Landscaping repair: Heavy equipment and foot traffic damage surrounding lawn/gardens
• Furniture and accessories: Most homeowners spend $1,000–$5,000 furnishing a new deck

Here's what Canadian homeowners actually pay, based on deck size and material (fully installed):

Smart strategies to reduce your deck cost without sacrificing quality:

• Build in fall or late winter — contractors offer 10–20% discounts in their slow season
• Choose a simple rectangular design — curves and angles add 20–40% to labour costs
• Use pressure-treated for framing (always) and splurge on composite only for the visible surface
• Skip the custom railing — pre-fabricated aluminum panels are cheaper and often look better
• Buy materials yourself during sales — spring sales at Home Depot and Lowe's can save 15–25%
• Keep the deck under 24" to potentially avoid permit costs (check your municipality)
• Choose ground-level — eliminates the need for deep footings, tall posts, and railings
• Phase the project — build the deck now, add lighting and skirting later