What is the minimum distance a fire pit should be from my Ottawa home?

The City of Ottawa requires a minimum distance of three metres (approximately 10 feet) between any open-air recreational fire and any building, structure, fence, property line, or combustible material. This is the baseline rule that applies to all fire pits — portable or permanent, wood-burning or gas — and it comes from Ottawa's Open Air Fire Bylaw. However, this three-metre minimum is exactly that: a minimum. Practical experience in Ottawa backyards suggests that more distance is often better, both for safety and for the comfort of everyone on your patio.

The three-metre rule measures from the outer edge of the fire pit or flame to the nearest combustible surface. This means measuring to your home's siding, deck railing, fence, overhead pergola structure, tree branches, stored firewood, or your neighbour's shed — whichever is closest. Overhead clearances matter too. If you have a pergola, covered patio, or overhead tree canopy, you need adequate vertical distance from the top of the flames to any overhead surface. The bylaw does not specify an exact overhead distance, but industry best practice is a minimum of 6 metres (20 feet) of clear space above a wood-burning fire pit and 3 metres above a gas fire pit with a controlled flame height.

For wood-burning fire pits specifically, the three-metre rule is tight in practice. Wood fires produce sparks and embers that can travel well beyond three metres in windy conditions — and Ottawa is a windy city, particularly in spring and fall when you are most likely to want a fire for warmth. A spark landing on vinyl siding, a fabric awning, or dry cedar decking can cause serious damage. Many Ottawa patio designers recommend positioning wood-burning fire pits at least 4.5 to 6 metres from your home if your yard allows it. This provides a meaningful safety margin and also keeps smoke further from open windows.

Gas fire pits are inherently safer at closer distances because they produce no sparks, no embers, and no unpredictable flame behavior. The three-metre minimum still applies by bylaw, but the practical risk at three metres with a gas fire pit is minimal. This is one reason gas fire features have become the default choice for smaller Ottawa patios where the yard simply cannot accommodate a wood fire at safe distances.

Property line setback is another consideration Ottawa homeowners sometimes overlook. The three-metre rule applies to property lines as well as structures. In typical Ottawa urban lots — which might be 9 to 12 metres wide — placing a fire pit three metres from your home and three metres from the property line on each side leaves a surprisingly narrow usable zone. Measure your yard carefully before planning your fire pit location. Corner lots and lots backing onto public green space have more flexibility.

Additional considerations for Ottawa properties include proximity to fences (cedar fences are combustible and dry out significantly over summer), proximity to your neighbour's house (which may be well within three metres of your property line), and the location of overhead utility lines. Hydro Ottawa lines running through your backyard create a clearance zone where no fire should be placed.

For properties with tight yard dimensions, a recessed or below-grade fire pit can reduce effective flame height and radiant heat exposure, allowing the three-metre setback to work more comfortably. An Ottawa patio contractor can assess your specific yard geometry and recommend the optimal fire pit location that satisfies bylaw requirements while maximizing your enjoyment and minimizing impact on neighbours.

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