Backyard Suite Rules in
Calgary After August 2026

Calgary’s low-density residential rules changed significantly in August 2026. Here is what homeowners need to know if they are considering a second, self-contained home on their property.

Two changes matter most.

On August 4, 2026, Calgary’s citywide rezoning was repealed, returning most affected properties to the land-use district they held before the 2024 rezoning. At the same time, Council made separate changes to how secondary and backyard suites are treated in Calgary’s low-density residential districts.

The result is a set of rules that are different from much of the information published in 2024 and 2025.

The short version: secondary suites are now a permitted use in all low-density residential districts. Backyard suites remain permitted in R-G and discretionary in other low-density districts.

This guide is current as of September 2026. Calgary’s Land Use Bylaw is the governing source, and the rules for a specific property should always be confirmed before design begins.

Two kinds of suite

A secondary suite is a self-contained dwelling within the main home, most commonly a basement suite.

A backyard suite is a separate dwelling on the same property. It may be located above a garage or in a standalone building.

You may also hear them called laneway homes, garden suites or carriage houses. The City of Calgary generally uses the term backyard suite in its permitting information.

What changed in August 2026

Calgary’s 2024 citywide rezoning moved most affected low-density residential properties into R-CG or R-G zoning.

Council voted to repeal that rezoning in April 2026, with the changes taking effect August 4. Approximately 99% of affected properties returned to the zoning they held before the citywide rezoning, unless they met specific exemption criteria.

For properties that remain R-CG, several rules were also changed. Maximum building height was reduced from 11 metres to 10 metres, maximum parcel coverage from 60% to 55%, and zero-lot-line development is no longer permitted. Rowhouses that meet the district rules are once again a permitted use.

Certain properties with development, building or subdivision applications already approved or underway were exempt from the redesignation, so anyone with an active application should confirm which rules apply to their file.

Where a backyard suite is allowed

Council also changed how suites are classified within Calgary’s low-density districts.

Secondary suites are now permitted uses in all low-density residential districts.

Backyard suites remain a permitted use in R-G and discretionary in other low-density districts.

A discretionary use is not automatically a refusal. It means the City reviews the proposal through the development-permit process and considers whether the project fits the applicable land-use rules and surrounding context.

The rules that shape a backyard suite

The exact requirements depend on your land-use district and property, but several rules now have a major impact on whether a backyard suite works.

One suite per property. A property can no longer have both a secondary suite and a backyard suite. It can have one or the other.

The type of existing home matters. Under many of the restored low-density districts, backyard suites are limited to properties containing a single-detached home. The rules vary by district, so this should be checked against the zoning of the specific property.

Parking is required again. The parking requirement removed during the 2024 rezoning changes has been reinstated. The City generally requires an additional parking stall for the suite, and street parking does not count toward that requirement.

Lot size and placement matter. The City regulates property width, setbacks, separation from the main home, height, amenity space and maximum suite area.

For example, in several restored low-density districts, current rules include a minimum 5-metre separation between the primary home and backyard suite, minimum setbacks from rear and side property lines, and a maximum backyard-suite floor area of 75 m².

These are the numbers that determine whether the suite fits comfortably within the rules or whether a relaxation may be required.

Services matter too. Water, sewer, electrical and other servicing must reach the new dwelling. Site conditions and the location of existing services can significantly affect both design and construction cost.

Read our Calgary backyard suite cost guide →

What permits do you need?

A new backyard suite requires both planning approval and building approval.

A development permit is used to review the project against Calgary’s Land Use Bylaw. Depending on the property’s zoning, the backyard suite may be processed as a permitted or discretionary use.

A building permit then covers the construction and applicable safety-code requirements.

The City’s 2026 fee schedule currently lists the development-permit fee for a new secondary or backyard suite at $0 under the suite amnesty program through December 31, 2026. Building permits and applicable trade permits still have fees.

Timing depends on the land-use district, the completeness of the application and whether relaxations are required. In general, a project that fits the applicable rules cleanly is easier to review than one requiring multiple relaxations.

What this means for your property

If your property is R-G, backyard suites remain a permitted use, provided the proposal meets the applicable rules.

If your property is R-C1, R-C2 or another restored low-density district, backyard suites are generally discretionary and require City review through the development-permit process.

If your lot remains R-CG, the revised R-CG rules, including the new height and parcel-coverage limits, apply to future development.

If you already have a legal secondary suite, you generally cannot add a backyard suite as well under the rules introduced in 2026.

The first step is simple: confirm the land-use district for your property before designing anything.

Common questions

Do I need a development permit for a backyard suite in Calgary?
Yes. A new backyard suite requires development-permit review along with a building permit. How the application is treated depends on your land-use district.

Can I have a basement suite and a backyard suite on the same property?
No. Following the 2026 changes, a property can have either a secondary suite or a backyard suite, but not both.

Can I build a backyard suite on a semi-detached property?
It depends on the land-use district and the existing dwelling type. In some restored low-density districts, backyard suites are tied to single-detached homes, while R-G rules can accommodate backyard suites with other housing forms. The safest answer is to confirm the property’s zoning and dwelling type before assuming it qualifies.

Did the 2026 repeal eliminate backyard suites?
No. The repeal changed the zoning of most properties back to their pre-2024 designation. Council separately retained backyard suites as permitted uses in R-G and discretionary uses in other low-density districts.

Is parking required for a backyard suite?
Yes. Parking requirements for backyard suites were reinstated as part of the 2026 changes.

Rules current as of September 2026 and provided for general planning purposes. Calgary’s Land Use Bylaw and current City permitting requirements govern each application.

Backyard Suite Rules in Calgary After August 2026