Guide
How much does a deck cost in Ottawa? (2026 prices + top-rated builders)
Jul 14, 2026 · Ottawa Home Services Directory · 6 min read
A new deck in Ottawa typically runs about $45 to $75 per square foot in pressure-treated wood, and more in composite. Here is what drives the price, and the city's top-rated deck builders.
A new deck in Ottawa typically costs about $45 to $75 per square foot in pressure-treated wood, and roughly $70 to $120 per square foot in composite or PVC. For a common 300 to 400 square foot deck, that is about $14,000 to $23,000 in pressure-treated wood and $21,000 to $36,000 in composite, before premium railings or a raised structure.
What drives the price
- Material: composite and PVC cost more upfront than pressure-treated, but need far less upkeep.
- Size and height: a raised deck needs deeper footings, more posts, and stairs, which all add cost.
- Railings: glass and aluminum railings cost noticeably more than pressure-treated pickets.
- Structure and site: frost-line footings, tricky access, and old-deck removal all add to the quote.
Where the money actually goes
Most of a deck's cost is labour and structure, not the boards you see. A builder who knows Ottawa will talk about frost-line footings and drainage, because that is what keeps a deck level after a few freeze-thaw winters. Treat a quote far below the others as a warning, not a bargain; it usually means shallower footings or thinner structure.
Always get an itemized written quote that names the material line, the railing type, and what site prep and permits are included. A deck attached to the house or above a set height needs a City of Ottawa permit, and a good builder handles that for you.
Top-rated Deck Builders in Ottawa
Ranked by public rating strength, so a strong score from many reviews outranks a perfect score from a few. Partners are labeled. Confirm licensing and insurance with the business before you hire.
- 1Hickory Dickory Decks (Ottawa) 5.0 (36)
Ottawa franchise of the national Hickory Dickory network, building custom composite, PVC, and wood decks across the south and west end.
- 2Deckify 4.9 (142)
Ottawa deck and patio builder offering custom decks, pergolas, and railings with design consultation, and the largest review base on this list.
- 3
Custom pressure-treated and composite decks engineered for the local frost line, with a multi-year workmanship warranty.
- 4MyDeck.ca 4.9 (71)
Nepean-based builder of low-maintenance composite, PVC, and cedar decks with aluminum railings, built by their own crews.
- 5Final Touch Decks & Fences 5.0 (22)
Family-run deck and fence builder handling decks, railings, patios, pergolas, and gazebos across the Ottawa area.
Common questions
- How much does a deck cost in Ottawa?
- Expect roughly $45 to $75 per square foot for pressure-treated wood and $70 to $120 per square foot for composite or PVC. A typical 300 to 400 square foot deck runs about $14,000 to $23,000 in wood and $21,000 to $36,000 in composite, before premium railings or a raised structure.
- Is a composite deck worth the extra cost?
- Composite costs more upfront but needs no staining or sealing and resists fading and rot, so it usually costs less over its lifetime. If you do not want ongoing maintenance in Ottawa's freeze-thaw climate, it is often worth it.
- Do I need a permit to build a deck in Ottawa?
- Usually yes for a deck attached to the house or above a set height. The City of Ottawa sets the thresholds, and a reputable builder pulls the permit and books the inspections as part of the job.
- What adds the most to a deck's price?
- Composite or PVC material, height off the ground (which means more footings and stairs), and premium glass or aluminum railings are the three biggest cost drivers.
- How long does a deck build take?
- A straightforward deck often takes a few days to about a week once materials arrive, though permits, weather, and a raised or complex design can extend that.
See the full Deck Builders directory in Ottawa, ranked with ratings and service areas.
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