Four homes on a lot

What we are exploring

Airdrie is exploring a change to residential zoning that would allow up to four homes on one residential lot in more areas across the city. Currently, many residential areas already allow up to three homes per lot (for example: a a semi-detached, a basement suite and a garage suite). This change would allow for one additional home on a lot.

This is often called flexible zoning or gentle density. It is not the same as building high-rises or turning neighbourhoods into apartment districts.

Why we are exploring it

We are exploring this option because it can help Airdrie:

• Offer more housing choices for residents at different life stages and budgets
• Support affordability by adding more options like suites, duplexes, fourplexes and townhomes 
• Use existing infrastructure more effectively (roads, pipes, parks, emergency services) instead of requiring new infrastructure on the edge of the city
• Protect farmland and natural areas by reducing urban sprawl
• Access federal funding that is linked to zoning that allows up to four homes per lot

What kinds of homes could be added

Allowing up to four homes on a lot can look different depending on the property and design rules. Examples can include:

Neighbourhood character

Any new homes would still need to follow zoning and design rules. These rules can include limits on height, building size, setbacks and how much of a lot can be built on. The intent is not to dramatically change the look or feel of neighbourhoods, but to allow housing that fits the street and surrounding homes.

Parking and traffic

Parking requirements and design standards would continue to apply. 

Property values and safety

Some residents worry that additional housing types could affect property values or neighbourhood safety. Research from other Canadian cities shows no consistent link between gentle density and declining home values or increased crime. 

Airdrie's housing stock

In communities like Airdrie, most homes are relatively new. Because of this, redevelopment tends to happen slowly and only in a small number of areas where older homes and lot conditions make it practical or economical. Many existing neigbourhoods can likely expect little to no change within the next generation. 

Some federal housing funding is tied to zoning that allows up to four homes per lot.

• Up to $6.2 million is tied to enabling four homes per lot by Dec. 31, 2026. This funding can help the City deliver services and balance the budget.  

Public engagement is planned for early 2026, when we’ll be inviting residents to share their thoughts. Stay tuned for upcoming opportunities to get involved.