Cranston, Calgary: 248 basements, just 41 suite permits

Cranston owners finish their basements for themselves. City of Calgary open data shows 248 basement development permits issued in Cranston from January 2023 to 29 September 2026, the third most of the 97 communities we compare, against just 41 secondary suite permits: 23 that altered existing space into a suite and 18 classed as new construction. Cranston also led the Southeast in additions, with 27.

What do Cranston owners build?

Basements, by a wide margin. The 248 basement permits are more than double the next category, detached garages at 104, followed by renovations at 59 and decks at 40.

Permits issued, excluding cancelled ones. "Share of Calgary" is this community's part of the citywide count for the same project type and years. Declared value is what the applicant wrote on the permit application. It is not a quote and runs below real costs. Medians are shown only where a category has at least 5 permits. Source: City of Calgary open data (building permits, development permits, secondary suite registry, census 2021 population, census 2021 households, civic census 2019, land use districts), retrieved 5 October 2026.

New houses have stopped, at least for now. Cranston had 56 new single-detached permits in 2023 and 35 in 2024, and none in 2025 or 2026 to date. There were no semi-detached or rowhouse permits at all.

A Cranston basement permit had a median declared value of $30,907 and took a median of 8 days to issue. That's the figure the applicant wrote on the permit application, and it runs well below what finishing a basement really costs.

Why so few suites in Cranston?

The data can't say for sure, but the households point one way. Cranston is large, owner-occupied and mostly detached: the 2021 census counted 20,850 residents, the fourth most of any Calgary community after Beltline, Panorama Hills and Saddle Ridge, in 7,210 households averaging 2.9 people.

Population and household figures are from the 2021 Census of Canada as published by the City of Calgary; dwelling types are from the City's 2019 civic census, the last one it ran. Newer communities have grown since. Source: City of Calgary open data (building permits, development permits, secondary suite registry, census 2021 population, census 2021 households, civic census 2019, land use districts), retrieved 5 October 2026.

The 2019 civic census found 5,332 of 7,141 dwellings (75%) were single-detached, and 5,933 were owner-occupied. Nearly a quarter of residents (24%) were 14 or younger. That profile suggests basements planned as family space: a bedroom, a rec room, a bathroom, maybe a gym, rather than a rental.

Development permits applied for from 1 January 2023; many home projects in Calgary need only a building permit, so these are a subset of all work. The registry lists suites the City has confirmed meet the rules, not every suite that exists. Source: City of Calgary open data (building permits, development permits, secondary suite registry, census 2021 population, census 2021 households, civic census 2019, land use districts), retrieved 5 October 2026.

Suites are still possible. The City's registry lists 96 Cranston suites, with 22 added in 2025, and the City classed 18 Cranston suite permits as new construction. As of October 2026, a secondary suite is a permitted use in R-1N and R-1, Cranston's two biggest residential districts, and in its smaller R-1s and R-G areas, as the legal basement suite guide sets out. Of 178 development permit applications since 2023, 30 were for suites.

What do Cranston basements need to pass?

The same two checks that decide most basement plans: a window big enough to escape through in every bedroom, and enough ceiling height where people live. The egress window guide and basement ceiling height guide give the Alberta code figures.

For scale, the median new house permitted here in 2023 and 2024 was 2,376 sq ft, and 65 of 91 were 2,000 to 2,499 sq ft.

The floor area the applicant entered on the building permit, for new single-detached houses issued in the same window. It usually excludes the basement. Source: City of Calgary open data (building permits, development permits, secondary suite registry, census 2021 population, census 2021 households, civic census 2019, land use districts), retrieved 5 October 2026.

Are people adding on to Cranston houses?

More than in most new communities. Cranston's 27 addition permits were the most in the Southeast, ahead of McKenzie Lake's 19, with 12 issued in 2025. An addition had a median declared value of $41,970 on the application and took a median of 19 days to issue, the third fastest of 58 communities with a median.

The declared value runs below real costs; the home addition cost guide has the Calgary price ranges.

What is Cranston zoned for?

Houses and special purpose land, in close to equal parts. The City's Residential category covers 49% of Cranston and special purpose districts 45.8%. The largest single district is S-UN, which the City labels urban nature, at about 22.6%, the fourth highest S-UN share of the 97. R-1N covers about 21.8% and R-1 about 16.1%, the biggest R-1 share in the Southeast.

The share of the community's districted area in each land use district, from the City's district and community boundary maps intersected exactly. Districts change by lot and by amendment: check a specific lot on the City's land use map before you plan. Source: City of Calgary open data (building permits, development permits, secondary suite registry, census 2021 population, census 2021 households, civic census 2019, land use districts), retrieved 5 October 2026.

S-TUC (a transportation and utility corridor) and S-SPR (school, park and community reserve) add about 7.6% and 7.5%. Almost none of Cranston is direct control, at 0.1%, so the standard district rules apply to most lots. Backyard suites are discretionary in R-1 and R-1N, and Cranston had 1 backyard suite permit. Check your lot on the City's land use map.

Seeing a Cranston basement at full size

A family basement is a set of trade-offs in one open space: how much goes to the rec room, how much to a guest bedroom, and where the bathroom and storage fit around the stair and mechanical room. At the studio, the basement plan fills a walkable LED floor at full size with room names and dimension lines, and studio sofas, a coffee table and freestanding walls show how the rec room actually feels.

Move a wall and the change is on the floor right away; the session is recorded so you can take it back to your contractor. Send the plan as a PDF or DWG at least three days ahead. Quotes are free and based on the plan's size: see pricing and book a session, or see other Southeast communities on the communities page.