Barrhaven, south-west Ottawa
Decks and porches in Barrhaven
On Barrhaven's townhouse streets the rear deck is often the whole back yard, so layout, privacy screens and stairs matter as much as the decking. A deck more than 600 mm above the ground needs a building permit, which often applies where houses sit above a walk-out or a sloped yard.
Typical raised deck in Barrhaven, with HST $21,200 to $27,800 $88 to $116 per sq ft for 240 sq ft
Stock photoWhat decks and porches cost in Barrhaven
Typical project totals and the price per square foot, with HST, by type of job and finish level, priced for suburban Ottawa. Choose a row to open it in the estimator with Barrhaven prices.
| Type of deck or porch | Pressure-treated decking | Cedar decking | Composite decking |
|---|---|---|---|
| Ground-level deck200 sq ft | $9,900 to $13,100$50 to $66 per sq ft | $12,500 to $16,400$63 to $82 per sq ft | $15,600 to $20,500$78 to $103 per sq ft |
| Raised deck240 sq ft | $16,400 to $21,500$68 to $90 per sq ft | $21,200 to $27,800$88 to $116 per sq ft | $27,900 to $36,600$116 to $153 per sq ft |
| Upper-level deck200 sq ft | $20,300 to $26,700$102 to $134 per sq ft | $25,500 to $33,400$128 to $167 per sq ft | $32,700 to $42,800$164 to $214 per sq ft |
| Covered front porch100 sq ft | $18,800 to $24,500$188 to $245 per sq ft | $23,500 to $30,800$235 to $308 per sq ft | $30,300 to $39,700$303 to $397 per sq ft |
Prices are estimates based on published Ottawa and Ontario price guides, checked October 2026. They are not an offer. A firm written quote follows a site visit. Prices for Barrhaven include about 2% over central Ottawa for travel and delivery.
Homes in Barrhaven
What the local housing means for decks and porches.
Old Barrhaven was started in the 1960s by developer Mel Barr. Longfields was mostly built from the early 1990s, Stonebridge from 2000, and Barrhaven South and Half Moon Bay after 2006, on what the City described in 2006 as farmland.
- Homes in Longfields and the earlier parts of Stonebridge are roughly 20 to 35 years old, an age when original cabinets, counters, tubs and vanities are often replaced.
- Detached, semi-detached and townhouse homes are the types the City allows to host a secondary suite, which makes a basement suite worth considering.
- On townhouse streets with small yards, a rear deck is the main way to add outdoor space; additions are more realistic on detached lots.
Permits and approvals
What to check in Barrhaven before decks and porches work starts. Rules change, so we confirm what applies to your address.
Rideau Valley Conservation Authority
Barrhaven sits between the Jock River and the Rideau River, both inside the Rideau Valley Conservation Authority's area. RVCA reports that about 16% of the Jock River-Barrhaven catchment lies inside its regulation limit, and it mapped flooding and slope hazards along the Rideau from Hogs Back to Kars in 2017. RVCA treats work inside the existing walls, roof and foundation that does not change the use as generally not needing its approval; enlarging the house, changing its use or adding a unit does.
Decks and porches
An attached deck needs a building permit when its surface is more than 600 mm (about 24 inches) above the ground, or when it is the main way into the house. A freestanding deck needs one when it is larger than 10 square metres (about 108 sq ft) and more than 600 mm up. Porches generally need a permit when they are larger than 10 square metres.
Trees
On urban lots of one hectare or less, the City's Tree Protection By-law requires a permit to remove or injure a distinctive tree, which the current by-law sets at 30 cm or more across at chest height. Footings and trenches near big trees are planned around their roots. The thresholds have changed in recent years, so we check the by-law in force.
Zoning
Additions and larger decks have to meet the zoning setbacks, height and lot coverage for your lot. Most of Ottawa's new Zoning By-law 2026-50 is in force (the parts not under appeal took effect from March 2026), and where a provision is still under appeal the stricter of the old and new rules applies, so we check the rules for your address before design starts.
A sample quote
A typical Ottawa deck or porch, priced task by task. Open it, then change it to suit a house in Barrhaven.
Good to know
How much does a deck or porch cost in Barrhaven?
A cedar raised deck of about 240 sq ft typically comes to $21,200 to $27,800 with HST, based on published Ottawa and Ontario price guides checked October 2026. With pressure-treated decking the same job is about $16,400 to $21,500; with composite decking, about $27,900 to $36,600. Size, the state of the house and what you add all move the number, so use the estimator for your own project. A firm quote follows a site visit.
Does being near the Jock River change anything?
If your lot is inside the Rideau Valley Conservation Authority's regulated area, enlarging the house, changing its use or adding a unit needs RVCA approval. Interior work inside the existing walls and foundation generally does not. We check the mapping for your address.
Do you work in all of Barrhaven?
Yes, from Old Barrhaven to Longfields, Stonebridge, Half Moon Bay and the newer streets near Cambrian Road. Barrhaven addresses are priced at suburban rates in the estimator.
Planning a deck or porch in Barrhaven?
Price it in the estimator with Barrhaven rates, then send it to us. We confirm the numbers on a site visit and follow up with a written quote.