- Secondary suites and detached units such as garden suites and laneway homes are allowed province-wide in single-family residential zones where three- to six-unit zoning is not required.
- Your local zoning bylaw, building permit rules and any development permit area still decide how and where you can build.
- Land in the Agricultural Land Reserve has tighter limits on suites and extra homes.
A basement suite or a laneway home can house a family member, a tenant, or both over time. Before you hire a designer or pour a foundation, you need to know whether your property can have one and which approvals stand between you and a finished unit.
The short answer in British Columbia is that the Province now requires most local governments to allow these units in single-family zones. The longer answer depends on your lot, your location and your municipality's current bylaws.
This article covers the law of British Columbia.
What the Province now requires
The Province states that secondary suites and detached accessory dwelling units, such as garden suites and laneway homes, are allowed province-wide in single-family residential zones. This covers all municipalities and regional district electoral areas where three- to six-unit zoning is not required.
The Local Government Act backs this up. In a restricted zone, which is a zone limited to detached single-family dwellings, the zoning bylaw must permit at least one additional unit inside the detached dwelling (such as a basement suite), at least one additional unit in another building on the same parcel (such as a laneway or garden suite), or both.
Local governments were required to update their bylaws by June 30, 2026, unless an exemption applied or they had applied for an extension. Because some municipalities may still be finishing their bylaws, check your municipality's current zoning rather than assuming.
Where limits still apply
The provincial rule is not a blank cheque. Local governments cannot use their development permit area or land use powers to unreasonably prohibit or restrict the use or density the Act requires. If provincial regulations set siting, size, form or density standards for the required units, the local government must exercise its zoning powers in accordance with them. Exactly what other limits apply on your lot depends on the local bylaw, so confirm with your municipality.
Some land is treated differently. Several exemptions in the Act apply to the minimum unit counts for three to six units rather than to every kind of suite, so ask whether any of these could affect your property:
- Land that is not connected to a water or sewer system provided as a service by a municipality or regional district.
- Parcels larger than 4,050 square metres, and land in a zone whose minimum subdivision lot size is 4,050 square metres.
- Land protected under the Heritage Conservation Act or designated under a heritage bylaw when the section came into force.
The required use and density also apply only where residential use is permitted on the parcel.
Farmland in the Agricultural Land Reserve
If your property is in the Agricultural Land Reserve (ALR), the rules are tighter. Generally one principal residence is allowed per parcel, and no Agricultural Land Commission (ALC) approval is needed if its total floor area is 500 square metres or less.
A secondary suite is allowed only inside the principal residence, and local bylaws must permit it and may restrict or prohibit it. An additional detached residence is allowed without ALC approval only if one residence exists when construction starts, it is detached from the principal residence, and it is no larger than 90 square metres on parcels of 40 hectares or less, or 186 square metres on parcels over 40 hectares.
Anything beyond those limits, such as more than one additional residence or an oversize one, requires a Non-Adhering Residential Use application to the ALC. ALR housing rules can be amended, so confirm the current thresholds with the ALC.
Permits, costs and renting it out
Zoning permission is only the first step. The Province says the required permits must be obtained before any stage of a building or renovation project begins, and your local government or First Nation issues building permits. Technical Safety BC covers electrical and gas permits, and plumbing, electrical, mechanical or demolition work may need separate permits.
If your lot is inside a designated development permit area, for example for hazard or environmental protection, construction generally cannot start until a development permit is issued, unless an exemption applies.
| Topic | What to check |
|---|---|
| Development cost charges | Developments with fewer than four self-contained dwelling units are exempt unless the bylaw says otherwise, and self-contained units of 29 square metres or less are exempt. |
| Short-term rental | Hosts may rent their principal residence plus one secondary suite or accessory dwelling unit where the principal residence requirement applies, and each rental unit needs its own provincial registration number. |
| Long-term tenants | The short-term rental legislation does not cover rentals longer than 90 days per booking. |
Building code requirements for suites and laneway homes, and the costs that come with them, vary, so ask your local government what applies to your project.
What to do next
- Find your property's zone in your municipality's current zoning bylaw or by contacting the planning department.
- Ask whether your lot is in the ALR, a development permit area or a heritage-protected property.
- Confirm whether your lot is connected to municipal water and sewer service.
- Ask what building, plumbing, electrical and gas permits your project will need.
- Ask about development cost charges and any other charges before you finalize your budget.
- If you plan to rent short-term, check whether the principal residence requirement applies to your community.
If the answers are unclear, or you have a strata, covenant or heritage question, a lawyer can review your title and bylaws before you commit money to plans.
Frequently asked questions
Can my municipality say no to a basement suite in a single-family zone?
Secondary suites are allowed province-wide in single-family residential zones where three- to six-unit zoning is not required. Local governments cannot use their development permit area or land use regulation powers to unreasonably prohibit or restrict the use the Act requires. Other local rules can still apply, so check your bylaw.
Do I need a building permit for a laneway home?
Generally yes. The Province says the required permits must be obtained before any stage of a building project begins, and your local government issues building permits. Permit requirements and exemptions for minor work vary by local government, so confirm with your municipality whether your project needs one.
Can I add a suite on farmland?
It depends. In the ALR a secondary suite is allowed only inside the principal residence, and local bylaws must permit it and may restrict or prohibit it. A detached additional residence is limited to 90 or 186 square metres depending on parcel size.
Will I pay development cost charges on a suite?
Developments with fewer than four self-contained dwelling units are exempt unless the local bylaw says otherwise. Self-contained units of 29 square metres or less are also exempt. Your local bylaw sets the details, so ask your municipality.
Sources
- BC Laws – Local Government Act, Part 14 — bclaws.gov.bc.ca
- Province of BC – Small-scale, multi-unit housing — www2.gov.bc.ca
- Province of BC – Development permit areas — www2.gov.bc.ca
- Province of BC – Building or renovation permits — www2.gov.bc.ca
- Agricultural Land Commission – Housing in the ALR — alc.gov.bc.ca
- Province of BC – Short-term rental principal residence requirement — www2.gov.bc.ca
- Province of BC – Development cost charge exemptions — www2.gov.bc.ca
Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.
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