What's the minimum kitchen size for an Ottawa basement suite?

For a basement secondary suite in Ottawa, there's no mandated minimum size for the kitchen itself, but the overall unit must meet minimum square footage requirements under the Ontario Building Code and Ottawa zoning rules.

The kitchen space within a suite is governed more by functionality and OBC requirements than by a specific room dimension. That said, the overall unit size is what Ottawa's zoning bylaw enforces: a bachelor/studio suite must be at least 28m² (300 sq ft), and a one-bedroom suite must be at least 37m² (398 sq ft). Your kitchen square footage counts toward that total, so there's no separate kitchen minimum carved out — but it must be a functional, code-compliant space.

What the Ontario Building Code does care about is that the kitchen is properly equipped and safely installed. This means you'll need adequate ventilation (a range hood vented to the exterior, or at minimum a recirculating hood with appropriate clearances), proper electrical circuits (dedicated 20-amp circuits for the fridge and countertop appliances, per ESA requirements), and if you're adding a gas stove, a licensed TSSA technician must handle the gas line connection — this is not a DIY task in Ontario.

Practically speaking, most basement kitchens in Ottawa secondary suites run between 40–80 sq ft of dedicated kitchen space. A galley-style layout can work in as little as a 7' x 6' footprint if designed efficiently. The key functional requirements are a sink with hot/cold water, a cooking appliance, counter space, and storage — all of which need to comply with OBC plumbing and electrical standards.

From a permit standpoint, adding a kitchen to a basement suite triggers a full building permit through the City of Ottawa (613-580-2424 or ottawa.ca/building), plus ESA electrical permits and potentially a plumbing permit. Ottawa's building department will inspect the rough-in plumbing, electrical, and final finishes — so cutting corners here creates real liability issues if you ever sell the home or make an insurance claim.

In terms of cost, a basic basement kitchenette (cabinets, countertop, sink, appliances) in Ottawa typically runs $8,000–$15,000 as part of a larger suite renovation. A more complete kitchen with full cabinetry and mid-range finishes can reach $20,000–$30,000 depending on layout complexity and finishes chosen.

If you're planning a secondary suite and want to make sure the kitchen layout meets code while maximizing your usable space, Ottawa Basements offers free consultations — we handle the full permit process and coordinate all licensed trades as part of the project.