Secondary Suite Rules in Winnipeg: What the City Requires

A basement suite can house a family member or bring in rent, but Winnipeg treats it differently from an ordinary finished basement. A suite is a separate dwelling unit, so it needs zoning approval, a smoke-separated layout and its own access to services. This guide follows the City of Winnipeg’s secondary suites page and bulletins as they read on October 13, 2026. The Zoning By-law was amended in 2024 and again in June 2025, so confirm the rules for your address with the City before you design.

What counts as a secondary suite in Winnipeg?

The City describes a secondary suite as living space attached to a single-family home or located on its property, with basic living, sleeping, cooking and sanitary facilities. An attached suite is created within or added to the house and has a separate entrance; a detached suite stands alone or sits over or attached to a detached garage.

For basements, the line usually comes down to cooking. The City’s basement permit form says that if kitchen or cooking equipment will be installed, a development permit for a secondary suite may be required. If a downstairs kitchen is part of the plan, raise it with a Zoning Development Officer (Permits Direct Line, 204-986-5140) before the layout is drawn.

Which permits does a secondary suite need?

Both a development permit and a building permit, before construction starts, plus separate electrical and plumbing permits. The City offers concurrent review, where the building permit application goes in once the development application is confirmed complete, or sequential review, after development approval. Apply through Permits Online or at the Zoning & Permits office, Unit 31-30 Fort Street.

A detached suite that doesn’t meet the zoning standards may also need a conditional use application. The basement rules still apply to an attached suite, too: bedroom windows, ceiling heights, alarms and insulation are covered in our guide to basement development permits.

What does the City list for attached (basement) suites?

The City’s secondary suites page sets out the number of suites, size limits, zoning districts, parking and uses for attached suites. That’s the zoning side of the approval; the building code side, covered next, deals with smoke separation and access to services. Because the Zoning By-law changed recently, confirm each item for your lot.

Sources: City of Winnipeg secondary suites page and Information Bulletin 2021-006-B, checked October 13, 2026. The Zoning By-law and the City’s staff govern for your property.

The size cap catches people out. If the house and the suite together total 2,000 sq. ft., 33% is about 660 sq. ft., so the suite may not be able to take the whole basement. Where the suite stops, the rest of the lower level stays with the main house or becomes common space.

What does the building code require for a basement suite?

The City’s bulletin on attached suites says the suite must be self-contained and suitably separated. That means a smoke separation between the suite, the main house and any common spaces, and each household being able to reach its own services, such as breakers and mechanical equipment, without going through the other unit.

• Smoke separation: walls between units need at least ½-inch drywall on both sides, taped and sealed at joints and penetrations, with ½-inch drywall on the ceiling below the main floor. Doors in the separation are at least 1¾-inch solid-core wood with a self-closer.
• Common spaces, such as shared laundry, storage or stairs, must be reachable from both units through common areas, never only through one suite.
• A shared service room, for example one water heater serving both units or one panel feeding both, needs a smoke separation, a sound transmission (STC) rating and access from a common area.
• Where a suite separation needs a sound rating, the acoustic insulation and resilient channel are inspected with the insulation and vapour barrier.

That bulletin dates from December 2021, and Manitoba moved to the 2020 national model codes on January 1, 2024, so have the City’s plan examiners confirm current requirements for your drawings.

What changed with Winnipeg’s 2025 zoning amendments?

City Council gave the infill housing amendments second and third reading on June 26, 2025, and they’re in effect. They allow two-, three- and four-unit homes as of right in many neighbourhoods, and four-unit homes up to 39 feet tall on certain lots within 800 metres of a frequent transit route. Height, setback and landscaping rules still apply.

For a homeowner, that means a suite isn’t the only way to add a unit. Converting a house into a duplex or triplex is a different approval from a secondary suite, so ask the City which route fits your lot before you commit to a layout. Our guide to home additions and zoning covers the zoning questions behind building out.

What about detached garden or garage suites?

The City lists a minimum lot size of 325 m² (3,500 sq. ft.), a floor area between 32.5 m² and 55.7 m² (350 to 600 sq. ft.), and a height limit of 4.57 m (15 ft.) on grade or 7.62 m (25 ft.) above a detached garage. Detached suites are permitted only in R1 and R2 zones.

The suite has to sit in the rear yard, at least 3.05 m (10 ft.) from the house, and can’t be subdivided from the main building. Water and sewer servicing needs a site servicing plan prepared by a Manitoba land surveyor or professional civil engineer, so budget time for that design work.

Are there any granny suite grants available in Manitoba?

Not in the way many websites suggest. The federal Canada Secondary Suite Loan Program was never launched, and Budget 2025 confirmed it will not be implemented. What does exist is federal: insured mortgage refinancing for adding suites, and the Multigenerational Home Renovation Tax Credit when the suite lets a senior or an adult with a disability live with a relative.

Checked October 13, 2026 against Budget 2025, Department of Finance Canada and Canada Revenue Agency pages.

For anything provincial or municipal, check with Manitoba Housing and your municipality before you count on a grant, and talk to your lender and tax professional before relying on either federal option. Our guides to Manitoba renovation tax credits and rebates and home renovation financing in Canada go further.

Next step

Every suite starts as a basement, so the first questions are the same: is it dry, is the ceiling high enough, and can the windows work for bedrooms? Our basement suite and basement renovation projects begin with a free on-site visit and a free written quote, with permits and inspections coordinated with the City. Get a starting range from the instant estimate, or book your visit.