Can you have a backyard suite and a basement suite on the same property in Calgary?

Not anymore, in most cases. As of August 4, 2026, Calgary's land use bylaw reverted to its pre-2024 rules, and the city says it plainly on its own secondary suites page: a backyard suite and a secondary suite cannot be located on the same property. If you're weighing two ways to add a second income stream to a home, or you're looking at a listing that already has one suite and wondering if you can add the other, that's the rule you're working with now.

If you'd been planning to add a backyard suite down the road to a home that already has a basement suite, or the other way around, this probably feels like the ground moved under you. It did, a little. But it's worth understanding exactly what changed and where the exceptions are, because for most buyers, one good suite is still plenty to change the numbers on a purchase.

What actually changed

On April 8, 2026, Calgary city council voted to repeal the 2024 blanket rezoning that had made secondary suites and backyard suites permitted, by right, across the city. I covered that vote here: Calgary Repealed Blanket Rezoning: What It Means for Secondary Suites (https://sampond.ca/blog/calgary-repealed-blanket-rezoning-what-it-means-for-secondary-suites). The rules council reverted to took legal effect on August 4, 2026, and that version of the bylaw applies to any application filed from that date forward.

Under the reverted rules:

A property can have a secondary suite or a backyard suite in most residential districts, not both. Backyard suites in lower-density zones go back to discretionary use, which means approval isn't automatic even when every bylaw requirement is met, and neighbors get a formal right to appeal through the Subdivision and Development Appeal Board. Backyard suites also need their own dedicated parking stall, separate from parking for the main house.

The basic build standards for a backyard suite haven't moved: 7.5 metres maximum height, roughly 1.5 metres of rear setback and 1.2 metres of side setback, and 5 metres of separation from the main house. Those numbers matter more now, since a tight lot that can't comfortably fit a suite and a parking stall may not be a realistic backyard-suite candidate anymore, even before you get into the discretionary approval process.

The exception: if your property was already rezoned

Not every property is stuck picking one or the other. If your lot was rezoned to R-CG, Calgary's rowhouse and multi-residential zoning, either through the 2024 blanket rezoning or through your own rezoning application, you can still have both a secondary suite and a backyard suite. And if you had a permit or a complete application already in the queue before the April 8 vote, a series of cutoff dates running from May through July 2026 protected those applications under the old, more permissive rules.

If you're not sure which category a property falls into, confirm with the city's planning department or your realtor before you plan a purchase or renovation around a specific suite strategy.

What this means if you're buying

If you're a first-time buyer weighing whether a suite is part of your plan at all, this rule doesn't really change your math. The strongest move is still the one I tell every first-time buyer: look for a home that already has a legal secondary suite, so you're not the one navigating permits, discretionary approvals, or appeal boards. Legal Secondary Suites in Calgary: What Buyers Need to Know walks through how to confirm a suite is actually legal before you write an offer.

Where this rule matters more is when you're comparing two specific properties, say, one with an existing basement suite and barely any yard, against one with a big lot, no suite, and obvious backyard-suite potential. Now you know that, whichever one you choose, that's likely your only suite option on that lot. It's one more reason to get clear on what you actually want the property to do for you, a mortgage helper now, a rental down the road, or both, before you fall for a listing.

For investors and move-up buyers already holding property, the calculation is different. If you've got an unfinished basement and a deep backyard, and you were planning to eventually do both, this is the week to figure out which one to prioritize.

Questions people are asking

Can I still legalize an existing illegal basement suite if my property already has a backyard suite?

It depends on when that backyard suite was built and under what zoning. If it predates the reverted rules or falls under one of the exceptions above, you may be fine, but confirm with the city's planning department before starting the process.

Does this affect the Secondary Suites Amnesty Program?

No. The amnesty program, which waives fees and simplifies requirements for suites built before March 2018, is a separate track from this zoning change and still runs through December 31, 2026. See Calgary's Secondary Suite Amnesty Is Ending: What Homeowners Need to Know.

Is a backyard suite still worth building given the new parking requirement?

Yes, but it depends on your lot. A lane-access lot with room for a stall barely notices the requirement. A tight, non-lane lot might not have anywhere to put one, which can make a basement suite the more realistic option.

What happens if I already have both suites on a property from before August 4, 2026?

Existing, legally permitted suites built under the old rules generally aren't undone retroactively. The new rule affects applications going forward, not suites already in place. If you're unsure, confirm your specific situation with the city.

Whichever direction makes sense for a specific property, basement suite, backyard suite, or neither, it's usually clearer with a second set of eyes on the actual lot and the actual numbers.

This post is general education, not legal or professional advice on Calgary's land use bylaw. Zoning rules, discretionary approval outcomes, and application cutoffs can vary by property and change over time. Confirm your specific situation with the City of Calgary's planning department or a qualified professional before making a decision.