British Columbia
Secondary suite/ADU baseline province-wide in applicable single-family residential zones; separate 3/4/6 SSMUH minimums in qualifying restricted zones. TOAs are a separate framework.
10-province framework check
Secondary-suite and ADU rules are not the same across Canada.
Some provinces create land-use rights directly. Others leave the permission question mainly to municipal zoning. This comparison separates the provincial layer from the local permit layer.
Reviewed September 18, 2026. This page covers the 10 provinces, not the three territories. It is a planning reference, not legal advice or parcel approval.
The fast comparison
The biggest mistake is treating a provincial building-code rule, grant program or planning guideline as if it automatically changes zoning. The table below labels the actual land-use layer first.
| Province | Primary land-use layer | What the current provincial framework means | Local check |
|---|---|---|---|
| British Columbia | Province-level minimums | Secondary suite/ADU baseline province-wide in applicable single-family residential zones; separate 3/4/6 SSMUH minimums in qualifying restricted zones. TOAs are a separate framework. | Local guides → |
| Alberta | Local zoning | Municipalities choose through land-use bylaws where secondary suites are allowed; provincial building-code rules apply after the land-use question. | Local guides → |
| Saskatchewan | Local zoning | Municipal zoning controls permitted/discretionary uses. The provincial suite grant does not itself create zoning permission. | Local guides → |
| Manitoba | Local zoning + provincial guidance | Provincial guidelines encourage and model secondary-suite rules, but local zoning bylaws determine permission. | Local guides → |
| Ontario | Province-level as-of-right baseline | Planning Act protects specified configurations up to three total units on qualifying urban residential land; local lawful standards and permits still apply. | Local guides → |
| Quebec | Temporary province-level right | One attached/internal accessory dwelling in a detached single-family residence inside an urbanization perimeter, subject to continuing municipal standards and municipal opt-out; temporary five-year measure from Aug. 21, 2024. | Local guides → |
| New Brunswick | Local/regional zoning | No blanket province-wide suite/ADU count identified in current sources reviewed; local/regional planning plus provincial building code. | Local guides → |
| Nova Scotia | Municipal planning | Building code recognizes secondary suites; land-use permission remains under applicable planning rules. Halifax also has province-imposed minimum planning requirements. | Local guides → |
| Prince Edward Island | Provincial route in unplanned areas | Provincial ADU framework applies outside municipalities with their own official plans/bylaws; development and building permits required. | Local guides → |
| Newfoundland and Labrador | Municipal development regulations | Municipal plans and Development Regulations determine land-use permission; province maintains the registry. | Local guides → |
Official-source notes
What each province actually does
Alberta
Municipalities choose through land-use bylaws where secondary suites are allowed; provincial building-code rules apply after the land-use question.
Saskatchewan
Municipal zoning controls permitted/discretionary uses. The provincial suite grant does not itself create zoning permission.
Manitoba
Provincial guidelines encourage and model secondary-suite rules, but local zoning bylaws determine permission.
Ontario
Planning Act protects specified configurations up to three total units on qualifying urban residential land; local lawful standards and permits still apply.
Quebec
One attached/internal accessory dwelling in a detached single-family residence inside an urbanization perimeter, subject to continuing municipal standards and municipal opt-out; temporary five-year measure from Aug. 21, 2024.
New Brunswick
No blanket province-wide suite/ADU count identified in current sources reviewed; local/regional planning plus provincial building code.
Nova Scotia
Building code recognizes secondary suites; land-use permission remains under applicable planning rules. Halifax also has province-imposed minimum planning requirements.
Building Code Regulations ↗ HRM Minimum Planning Requirements ↗
Prince Edward Island
Provincial ADU framework applies outside municipalities with their own official plans/bylaws; development and building permits required.
Newfoundland and Labrador
Municipal plans and Development Regulations determine land-use permission; province maintains the registry.
How to use this before spending money
- Identify whether the province creates an as-of-right land-use baseline or leaves permission to local zoning.
- Open the municipality's current zoning/land-use source for the address.
- Separate an internal secondary suite from a detached garden/laneway/garage unit; the rules can differ.
- Then check building code, fire/life-safety, servicing, permits, inspections and occupancy requirements.
A legal provincial baseline can still leave a parcel unable to support a proposed building form because of lawful site, servicing, hazard or code constraints.
Put the guide into action
Move from general guidance to the property, budget and build scope.
1 · RulesCheck the city guideUse the local official source before treating a national guide as the final rule.Find my city →2 · BudgetBuild a planning rangeHome Cost Canada provides no-email renovation cost calculators and city planning ranges.Open cost calculators →3 · ContractorStart one contractor matchHomeSelect handles contractor matching separately from zoning, permits and code approval.Start contractor match →