A Nepean homeowner emailed me last summer with two fence quotes. One was roughly half the other. Same 120 linear feet, same 6-foot height, same cedar. The cheap one had no permit, no concrete footings, and 9-foot post spacing instead of 8. He wanted to know if the cheap one would last. The honest answer: maybe four years. The properly built fence will last 18 to 22.
Ottawa fence pricing splits cleanly along three axes: material, height (which determines permit), and footing detail. Below is what drives the number on each combination, where the City of Ottawa rules force decisions, and which neighborhoods change the math. We put every line item in a detailed written breakdown so you see exactly what you are paying for.
The Ottawa permit threshold
Ottawa By-law 2003-462 (the Fence By-law) and the Building Code work together. The rules in plain language:
- Up to 7 feet (2.13 m): no building permit required. You still must comply with the height limit (2.13 m in rear/side yards, 1 m in front yards) and not encroach on city property.
- Over 7 feet: building permit required, $117 minimum fee, drawings or sketch submitted via MyServiceOttawa, structural review for wind loading.
- Pool fencing: separate Pool Enclosure By-law applies regardless of height. Self-closing gate, 1.2 m minimum, no climbable surfaces within 1.2 m.
- Corner lots: 0.75 m max height in the corner sight triangle (3 m from each road).
- Heritage districts (parts of the Glebe, Sandy Hill, New Edinburgh): heritage permit may be required regardless of height.
Most Ottawa fences are 6 feet because that's the residential default and it stays under the permit threshold. Going to 8 feet adds permit cost plus 2 to 4 weeks of waiting plus the engineering review.
Pressure-treated: the Ottawa default
The Ottawa default. PT 4x4 posts on either concrete footings or post-set foam, PT or steel rails, PT pickets, gate hardware, no stain (it gets stained the next spring or never).
What sits at the low end of the PT range: 4x4 PT posts at 8-foot spacing, post-set foam in 24-inch holes (above frost on shallow soils), PT 1x6 dog-ear pickets, two rails, no top cap, basic galvanized hardware, one 4-foot gate.
What pushes you to the top of the PT range: 6x6 PT posts (overkill for most cases but some clients want it), 4-foot deep concrete footings below frost, top cap and bottom rail, 1x6 dressed pickets with no dog-ear, two gates, soft-close hinges. The jump is driven by post size, footing depth, picket grade, and gate count.
What a real Ottawa PT fence quote should include
- Footing depth: 1.2 m minimum for concrete footings, below frost line. Foam works if soil drains, otherwise heaves.
- Post spacing: 8 feet maximum on 6-foot fences, 6 feet on 8-foot fences.
- Hardware grade: hot-dipped galvanized minimum, not bright zinc which rusts in 3 years.
- Stain: some quotes include first stain as an add-on, most don't.
- Old-fence removal and disposal: an added line item if you have an existing fence to tear out.
Cedar: the step up from pressure-treated
Western red cedar fence posts last 8 to 12 years untreated, 15 to 20 with annual oil. Cedar pickets last 18 to 25. The premium over PT is mostly aesthetic for the first 5 years; after that it's about how it ages (greys evenly versus PT's blotchy green-to-grey transition).
What sits at the low end of the cedar range: PT 4x4 posts (cedar posts last too short in Ottawa wet/freeze cycles, even though they look better) with cedar wraps, cedar 1x6 pickets, cedar rails and top cap, concrete footings, basic gate.
What pushes you to the top of the cedar range: 6x6 cedar-wrapped or full cedar posts, premium clear-grade cedar pickets in horizontal slat or board-on-board pattern, hidden fasteners, integrated gate hardware with magnetic latches, post caps with low-voltage lighting. Picket grade, pattern, and hardware are the cost drivers here.
The cedar post myth
Pure cedar posts in the ground rot. They look beautiful for 6 years and fail in 9 to 12. Every "real cedar fence" we install in Ottawa uses PT posts wrapped in cedar trim, or PT posts with steel sleeves and cedar facing. Anyone selling you "100% cedar including posts" at a normal price is either using cedar that won't survive or charging for cedar that won't survive. The exception: laminated cedar posts on steel anchor bases set in concrete, which carry a real per-post premium.
Vinyl and aluminum: the no-maintenance category
Vinyl (PVC) and aluminum fences are the no-maintenance category. Vinyl looks best in white or beige, aluminum looks best in black. Both come with 25 to lifetime warranties. Both cost roughly double pressure-treated.
What sits at the low end of this range: factory-built vinyl panels, 4x4 vinyl-wrapped steel posts in concrete, basic gate, white or beige standard.
What pushes you to the top of this range: heavy-duty aluminum with cast-aluminum post caps, two gates with self-closing soft-close hinges, low-voltage lighting in posts, custom heights (8-foot which crosses permit threshold), and powder-coated finish in non-standard colour. Material grade, gate count, lighting, and custom height are the drivers.
The cheapest fence and the most expensive fence in Ottawa share one thing: post installation determines whether they survive. Everything above ground is the easy part.
Linear-foot math by neighborhood
Different Ottawa neighborhoods change fence economics in real ways.
Glebe, Old Ottawa South, Centretown: narrow lots, often 25 to 35 feet wide, but two long sides. Average rear-yard fence: 80 to 110 linear feet. Access is hard because lot lines run between row houses with no driveway side, which adds trip labour to every quote. Heritage rules apply in some pockets.
Westboro, Hintonburg: 30 to 45-foot lots, similar layout to Glebe but with more driveway access. Typical fence: 100 to 150 linear feet. Access is moderate.
Kanata, Stittsville, Barrhaven, Findlay Creek: 35 to 50-foot suburban lots. Typical fence: 130 to 220 linear feet. Easy access, clay soil that demands real concrete footings (not foam) for posts to last. Most quotes here run high because the fences are longer and the post count is higher.
Manotick, rural cuts: 100-foot lots and up. Fences here are sometimes 400-plus linear feet. Per-foot price drops because of efficiency, but the total is large. On 600-foot runs the spec (material, footing, gates) swings the total widely, which is why we itemize every section.
Orleans: mix of older established (Convent Glen, Queenswood Heights) and post-2000 builds. Older lots have more setback issues; newer lots are straightforward.
Where homeowners save and where they shouldn't
Cut these to save money:
- Top cap: aesthetic only, skip it to trim the per-foot rate.
- Stain on installation: do it yourself in year two and drop it from the quote.
- Old-fence removal: tear out yourself if your back is up to it and remove that line item.
- Fancy gates: standard pre-built gates work fine; custom gates add a real premium each.
Don't cut these:
- Footing depth: above-frost footings heave and your fence leans in 3 years.
- Post hardware: cheap brackets corrode and let pickets fall off.
- Post spacing: stretching to 10 feet on a 6-foot fence sags within 2 years.
- Survey or property-line check: building on the wrong line is the most expensive mistake in fencing.
Real example: Barrhaven 2025
165 linear feet, 6-foot cedar-wrapped PT post fence with horizontal slat detail, two gates including a 12-foot driveway gate. The final came in close to the written quote, with one small add to upgrade two corner posts to deeper footings after we hit a clay seam. No permit needed (under 7 feet). Total time including disposal of old chain-link: 4 days.
Common Ottawa fence mistakes
Three things we see homeowners regret.
Building before checking the property line. Get a survey or pull your existing one. Building 18 inches into your neighbour's yard means tearing out and rebuilding. We've seen straightforward jobs nearly double in cost because of this.
Going taller than 7 feet without a permit. The City catches this on complaints, and the order is to bring it down to 7 feet, which usually means rebuilding. Save the permit fee. It's cheaper than the rebuild.
Skipping the gate hardware upgrade. Standard hinges fail in 4 to 6 years. Soft-close self-closing hinges last 12-plus. The upgrade is a small per-gate add. Spend it.
The bottom line on Ottawa fences: stay under 7 feet to skip the permit, set posts in real concrete below frost, and pay for the hardware grade that doesn't rust. Material choice matters less than what's under the ground. Call 613-862-4555 for a fixed-price number on your specific run.