Newer Stittsville lots are deep enough for a garden suite ($260-$480 per sq ft, 6-10 months); the older Main Street core suits a basement apartment ($90-$220, 3-5 months) or a small coach house. Second Dwelling Unit Ottawa designs, permits and builds them in Stittsville.
Deeper lots in newer phases
Development agreements checked
Free site visit to confirm your lot
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About this area
ADU building in Stittsville
Stittsville makes up its own ward within the City of Ottawa and has grown from a small rural village into one of the city’s busiest western suburbs over the past two decades, with new subdivisions like Fernbank and Jackson Trails continuing to fill in around the older village core along Stittsville Main Street.
Recent project
Recent Project in Stittsville
A basement in Stittsville at the framing stage. The window opening is framed into the new stud wall, a small room is framed around the utility area in the corner, and the ceiling is still open for rough-in.
What makes Stittsville different
Newer construction, larger typical lots
Most of Stittsville's residential growth has happened since the early 2000s, and its newer subdivisions generally carry more generous lot depths than comparably new developments closer to Ottawa's downtown core. That extra depth is what makes a detached garden suite a realistic option for a meaningful share of Stittsville properties, provided the rear setback and lot coverage limits for the specific subdivision are confirmed first.
The older village core is a different story
Stittsville's historic Main Street core predates the surrounding subdivisions by decades and has a tighter, more traditional village lot pattern. Properties here are handled more like an established urban lot than a modern suburban one – basement apartment conversion or a smaller coach house tends to fit better than a large detached garden suite in this part of Stittsville.
We start with a site visit
Stittsville's lot pattern differs sharply between its newer subdivisions and the historic Main Street core – the first step on any property is a site visit to measure your actual lot and confirm what your specific zoning allows.
Working within newer zoning and development agreements
Because so much of Stittsville was developed recently, many properties here fall under both the City's base residential zoning and a subdivision-specific development agreement negotiated when the neighbourhood was built. We check both before finalizing a design, since a development agreement can sometimes impose conditions – on exterior materials or accessory structure placement, for example – that go beyond what the zoning by-law alone would require.
Stittsville ADU question
Do Stittsville's newer subdivision lots have enough rear yard depth for a garden suite?
Many do – Stittsville's newer phases generally have deeper lots than Ottawa's oldest urban neighbourhoods, though setback and separation-distance rules still apply. We measure your specific lot rather than estimating from the subdivision's general pattern.
Who is adding ADUs in Stittsville, and why?
Stittsville's rapid population growth has been driven heavily by young families moving in for newer housing stock and proximity to Kanata's employment corridor without Kanata's higher price point. That demographic mix supports demand for secondary suites both as mortgage-helper rental income and as space for extended family as households grow.
Planning a project in Stittsville
Whether your property is a short walk from the Johnny Leroux Stittsville Community Arena in the historic core or several kilometres out in one of the newest phases, the same feasibility process applies: we confirm your lot's specific zoning and setbacks before recommending a garden suite, coach house, or basement conversion.
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