Calgary · Alberta — verified 30 August 2026
Backyard suites in Calgary, after the rezoning repeal
Calgary repealed its citywide rezoning. Council approved the repeal on 8 April 2026 and the changes took effect on 4 August 2026, returning about 99% of properties to the zoning that applied before August 2024.
That makes most Calgary backyard suite advice written in the last two years wrong, and the rules that replaced it are stricter in three ways that matter: the use is discretionary in most districts, you can no longer have both a secondary suite and a backyard suite on one parcel, and the parking requirement is back.
01 — Start here: it is discretionary
In every low-density district except R-G and R-Gm, a backyard suite is a discretionary use. The Development Authority can refuse it even when your plans meet every rule, neighbours are notified, and the decision can be appealed. Only R-G and R-Gm make it a permitted use, where meeting the rules means it must be approved.
In two districts it is not on the list at all: R-CGex and R-MH. There, a backyard suite needs a land use redesignation before it can be considered.
There is also a host-building rule that caught people out when it changed. Outside R-G and R-Gm, a backyard suite generally has to sit on a parcel with a single detached dwelling. Semi-detached hosts only qualify where the suite was approved before 4 August 2026.
Practical consequence for anyone planning a build: confirm the current district for your specific address before spending anything on design. Council also directed semi-annual bylaws to keep restoring designations, so parcel zoning is still moving.
02 — The numbers
What the bylaw requires
From the Land Use Bylaw as consolidated on 5 August 2026. Your district adds its own parcel requirements on top, and some districts set higher general minimums than the suite-specific widths below.
| Maximum height | 7.5 m, stepped down near neighbours: 5.0 m at a shared side property line and 3.0 m at a shared rear line, rising at 45 degrees to the 7.5 m maximum |
| Maximum floor area | 75.0 m², which the Development Authority may relax by up to 10% |
| Minimum rear setback | 1.5 m for the suite portion, 0.6 m for a private garage portion |
| Minimum side setback | 1.2 m |
| Separation from the main house | 5.0 m façade to façade, reducible to 1.5 m where qualifying amenity space is provided at grade |
| Private amenity space | 7.5 m² minimum outdoors, no dimension under 1.5 m (except in R-CG) |
| Parking | 1.0 stall for the suite, in addition to the stalls required for the main home. Street and tandem parking do not count |
| Parcel width | 9.0 m where a suite-specific minimum applies, or 7.5 m on a corner or laned parcel with 3 or more stalls. Some districts set higher general minimums instead |
| One suite only | A parcel may have a secondary suite or a backyard suite, not both |
Widely repeated and now wrong: the rule that floor area is capped at 100 m² under a 13 m lot width and uncapped above it. That belonged to the repealed rezoning. The current cap is a flat 75 m².
03 — Permits, in order
Backyard suites always require planning approval before anything else. The order is a development permit first, then a building permit, then separate trade permits for electrical, plumbing, mechanical and gas. Unlike some secondary suites, a backyard suite can never skip straight to a building permit, because the use is discretionary almost everywhere. The City states a 60-day review timeline.
Three requirements that surprise people. A backyard suite needs a real foundation with footings below the frost line; building on an existing garage is only possible if an engineer has reviewed and approved the structure. The windows on the side of your house facing the suite drive a spatial separation calculation that often governs siting more than the zoning setbacks do. And proof of New Home Warranty registration is required with the building permit application.
04 — If the suite is factory-built
Alberta’s building code accepts CSA A277: an off-site constructed building certified to that standard by an organization accredited by the Standards Council of Canada is considered to comply with the National Building Code 2023 Alberta Edition, province-wide. It is the same standard used in British Columbia, so a home built to it in our Surrey factory does not need a different certification path for Calgary.
What it does not do is shorten the permit process, and Calgary is unusually direct about this: a factory-built home still needs its development and building permits before construction begins in the factory, and the City notes that A277 certifies the factory process rather than reviewing code compliance. Professional schedules and full drawing sets are part of the application.
05 — Common questions
Is a backyard suite allowed as of right in Calgary?
Usually not. In every low-density district except R-G and R-Gm, a backyard suite is a discretionary use, which means the Development Authority can refuse it, neighbours are notified, and the decision can be appealed. Only R-G and R-Gm treat it as a permitted use. In R-CGex and R-MH it is not a listed use at all. This is the single most important thing to establish before you spend money on design.
Can you have both a secondary suite and a backyard suite in Calgary?
No, not any more. The Land Use Bylaw states that a secondary suite and a backyard suite must not be located on the same parcel. A lot of advice online still says you can, because that was the position under the citywide rezoning that Council repealed with effect from 4 August 2026. At the time of writing, one page on the City's own website still says both are allowed, and another page on the same site says they are not.
What happened to Calgary's citywide rezoning?
Council approved a repeal on 8 April 2026 and the zoning changes took effect on 4 August 2026, returning roughly 99% of properties to the districts that applied before August 2024. Properties that already had approvals or applications under the newer zoning, or that were rezoned on the owner's own application, are exempted. Because Council also directed semi-annual bylaws to keep restoring designations, the district on any given parcel can change: check the current designation for your address rather than assuming.
Does Calgary still require parking for a backyard suite?
Yes. The repeal brought the parking requirement back. A backyard suite requires one motor vehicle parking stall, and that is on top of the stalls required for the main home. Street parking and tandem stalls behind other required stalls do not count. Reductions exist but are narrow, mainly in R-CG for listed inner communities or within 600 m of an LRT or BRT station.
Does CSA A277 factory certification change the Calgary permit process?
It satisfies the building code, not the permits. Alberta's building code treats an off-site constructed building certified to CSA A277 by a Standards Council of Canada accredited organization as complying with the code, province-wide. Calgary is explicit that this does not remove anything: a factory-built home still needs its development permit and building permit before construction starts in the factory, and the City states plainly that A277 certifies the factory process rather than reviewing code compliance.
06 — Sources and a caution
Every figure here was read from the City of Calgary or the Government of Alberta on 30 August 2026, against the Land Use Bylaw consolidation effective 5 August 2026.
A caution worth stating plainly, because it affects anyone researching this right now: the repeal is recent enough that several pages on the City’s own website have not caught up, and at the time of writing they contradict each other on whether a parcel can have both a secondary suite and a backyard suite. Where a summary and the bylaw disagree, the bylaw wins. If a rule matters to your build, confirm it with the Planning Services Centre.
- City of Calgary — Repeal of Citywide Rezoning
- Land Use Bylaw 1P2007, consolidation effective 5 August 2026 (PDF)
- City of Calgary — Build a new backyard suite
- City of Calgary — Suite permits by land use district
- City of Calgary — Land use districts
- City of Calgary — Manufactured and factory-built buildings guide
- Alberta Municipal Affairs — STANDATA 23-BCV-002, off-site constructed buildings (PDF)
- Government of Alberta — Building codes and standards
Planning a backyard suite in Calgary?
The first question is what your parcel is zoned today. We will check it with you before anyone draws anything.