Decks
Deck Cost in Ontario: 2026 Guide
Deck costs in Ontario vary widely because material is only one part of the build. Height, footings, framing, railing, stairs, demolition and access can matter just as much as the boards you see on top.
If you are planning a deck in Orangeville, Caledon or Brampton, we can help compare materials and build a clear scope around your site and budget.
Typical 2026 deck cost ranges
HomeStars' 2026 Canadian guide places installed deck construction around $35 to $130 per square foot overall. A typical 200-square-foot deck is listed around $8,000 to $20,000, while more complex raised, multi-level or premium-material decks can run significantly higher.
Ontario projects should still be priced from the actual design because local site conditions, access and municipal requirements affect the final scope.
Material cost differences
HomeStars' 2026 installed ranges place pressure-treated lumber around $35 to $60 per square foot, cedar or thermally modified wood around $60 to $105, mid-range composite around $65 to $95, and PVC or capped polymer around $80 to $130.
Labour is a major part of the quote
HomeStars estimates labour at roughly 40% to 60% of many deck quotes. That is why comparing board prices alone does not tell you what the finished deck will cost.
Foundation and elevation
Raised decks need more structural framing, bracing and often more substantial foundations than simple ground-level platforms. Frost conditions, soil and attachment details all matter in Ontario.
Railings, stairs and extras
Railings, stairs, lighting, privacy screens, pergolas and built-in features can add a meaningful amount to the project. These should be priced explicitly rather than buried in a generic per-square-foot allowance.
Wood versus composite over time
Pressure-treated lumber generally wins on initial cost. Composite and PVC reduce staining and many maintenance tasks, so the better choice depends on budget, appearance and how much future maintenance the homeowner wants.
Budgeting accurately
A useful deck estimate should show the structural and finish scope clearly, including footings, framing, decking, fascia, railings, stairs, hardware, demolition and cleanup where applicable.
Related services and resources
Frequently asked questions
How much does a deck cost per square foot in Ontario?
Current 2026 Canadian guidance gives a broad installed range of roughly $35 to $130 per square foot, depending heavily on material and structural complexity.
What is the cheapest common deck material?
Pressure-treated lumber is generally the lowest-cost mainstream option up front.
How much more is composite decking?
Current 2026 Canadian guidance commonly places mid-range composite around $65 to $95 per square foot installed versus roughly $35 to $60 for pressure-treated lumber.
What makes a deck expensive besides the boards?
Foundations, framing, height, stairs, railings, demolition, access and specialty features can all add substantial cost.