How much do contractors charge for pressure treated deck new in Ottawa?

A new pressure-treated deck in Ottawa typically costs $25-45 per square foot installed, with most homeowners paying $30-35 per square foot for a standard build. This means a 12x16 deck (192 sq ft) would run approximately $5,800-8,600, while a larger 16x20 deck (320 sq ft) would cost $8,000-14,400.

Basic pressure-treated decks using standard PT lumber and basic railings fall on the lower end at $25-32 per square foot. These typically include standard 2x8 or 2x10 joists, 5/4" decking boards, and simple spindle railings. Mid-range builds at $32-40 per square foot often feature upgraded materials like cedar cap rails, decorative post caps, built-in planters, or multi-level designs. Premium pressure-treated decks reaching $40-45+ per square foot include features like curved sections, integrated lighting, custom railings, or complex multi-level designs.

Several factors significantly impact pricing in the Ottawa market. Deck height affects costs substantially - ground-level decks are most affordable, while second-story decks requiring extensive support structures can add $5-10 per square foot. Access to your backyard matters too; if contractors need to carry materials through your house or around tight spaces, expect a 10-15% premium. The age and condition of your home also plays a role - older homes may require additional structural reinforcement where the deck attaches to the house.

Ottawa's climate considerations add some unique costs. Our 4-foot frost line means footings must be dug deeper than in milder climates, and the harsh freeze-thaw cycles require quality hardware and proper drainage. Most contractors recommend upgrading to galvanized or stainless steel fasteners to handle Ottawa's weather, adding roughly $200-400 to material costs.

Permit requirements in Ottawa add $150-300 to your project cost. Decks over 24 inches high or attached to the house require building permits, which take 10-15 business days to process. Your contractor should handle the permit application, but factor this into your timeline - most deck contractors book 3-6 weeks out during peak season (May-September).

What's typically included in these prices: design consultation, permits, excavation, concrete footings, all framing lumber, decking boards, railings, and basic stairs. What costs extra: decorative elements like skirting ($8-15 per linear foot), built-in benches ($150-300 per linear foot), and electrical for lighting (requires separate ESA permit and licensed electrician).

Next steps: Get quotes from at least three licensed contractors between February and April for the best pricing and availability. Browse verified contractors in our directory, and ensure any contractor you hire carries WSIB coverage and liability insurance. Quality deck installation is crucial in Ottawa's climate - a properly built pressure-treated deck should last 15-20 years with regular maintenance.