The 9.5-metre rule. Edmonton's new infill height cap and what it means for your lot

Edmonton city council has lowered the maximum height for small-scale residential infill from 10.5 metres to 9.5 metres. Council voted ten to three for the change on April 27, 2026, and it took effect on August 1, 2026. If you own a lot in a mature neighbourhood, are thinking about buying one, or have a builder contract in progress, this is the rule that now decides how the third storey gets designed.

What changed, and what did not

The one-metre cut applies to the small-scale residential zone, the RS zone that covers most of Edmonton's established neighbourhoods. City staff told council that roughly 80 per cent of the infill built in 2024 and 2025 already came in at 9.5 metres or lower, so most builders are adjusting plans rather than starting over.

Two things did not change. The unit count stayed where it was: a mid-block lot of 600 square metres or more in the RS zone can still hold up to eight units, after council turned down a motion earlier in the year to cut that to six. And the smaller footprint rules council adopted in June 2025, which trimmed the allowed length and width of infill buildings, stay in force alongside the new height.

Where the metre comes from

On a three-storey infill, one metre is the difference between comfortable ceiling heights on every floor and a design that has to give somewhere. The builders we work with are solving it in three places:

• Ceiling heights. Expect eight-foot ceilings on the upper floors where nine-foot was common, or a slightly lower main floor.
• Basements. Builders are digging deeper to keep basement windows above grade and recover living space. That raises excavation and foundation cost, and on some blocks it runs into water-table limits.
• Roof form. Flat and low-slope roofs become the default, because a pitched roof spends height the design can no longer spare.

Three-storey infill is still allowed. City administration said so when it recommended the change. It is simply tighter.

Does it affect your block?

The cap applies to the RS zone, which is most of the mature neighbourhoods inside the Anthony Henday. It does not change what can be built in new suburban communities, which sit in different zones with their own height limits. Development permits approved before August 1 keep the height they were approved under; the city added a provision so planners can treat those buildings as conforming. If your application was in process over the summer, ask your builder which height the drawings were checked against. For anything submitted now, 9.5 metres is the number.

What to do about it

• Buying a lot. Price it on what can be built at 9.5 metres, not on the listing's "three-storey potential" line. Ask for a massing sketch from a builder before you write the offer.
• Under contract with a builder. Ask for the revised elevation and section drawings and confirm the ceiling height on each floor and the basement window height above grade.
• Selling a lot. Have the maximum buildable envelope on paper. Buyers' designers will check it against the bylaw within a day.

We spent our careers selling new homes for Edmonton builders. If you have questions or want a second opinion on a lot or a set of drawings, send them over.

Sources

• CTV News Edmonton, "City council approves zoning bylaw change reducing infill height limit", April 27, 2026: ctvnews.ca
• Taproot Edmonton, "Council hears frustration from both sides on proposed infill changes", April 10, 2026: edmonton.taproot.news
• CBC News Edmonton, "Edmonton city council reduces infill height cap by 1 metre", April 2026 (source of the 80 per cent figure from city staff): cbc.ca
• City of Edmonton, Zoning Bylaw 20001, Part 2, RS Small Scale Residential Zone: zoningbylaw.edmonton.ca