R-C1s — Residential – Contextual One Dwelling District
Residential – Contextual One Dwelling District (R-C1s) is one of Calgary's low-density residential districts under the Land Use Bylaw. Permitted: contextual single detached house, secondary suite. Needs City approval: single detached house, backyard suite.
Last reviewed: August 2026
What you can build in R-C1s
Permitted (the rules below still apply):
- Contextual single detached house
- Secondary suite
Needs City approval (decided case by case):
- Single detached house
- Backyard suite
R-C1s rules at a glance
| Building height | 8.6 m, up to 10 m if the neighbouring houses are taller Height is contextual: the greater of 8.6 m, or 1.5 m above the neighbouring building context, capped at 10.0 m. In practice 8.6 m is achievable on any lot; 10.0 m is possible where taller neighbours set the context. (s.399) |
|---|---|
| Parcel coverage | 45% |
| Front setback | Based on the neighbouring houses: their average less 1.5 m, and at least 3 m |
| Side setback | 1.2 m. 3 m on one side if there's no lane and no attached front or side garage |
| Rear setback | 7.5 m |
| Minimum parcel depth | 22 m |
| Minimum parcel area | 330 m² |
| Maximum dwelling units | 2 per parcel |
| Minimum parking | 1 stall per unit 1 per secondary/backyard suite |
Common R-C1s permit mistakes
- Front setback can be up to 1.5 m closer than the neighbouring houses' average, but never under 3.0 m.
- Secondary suites have extra requirements that catch people out: their own exit, their own parking stall, size limits, and a floor no more than 0.6 m above the ground.
- The house and garage together can cover at most 45% of the lot, less 21 m² for each parking stall not in a garage. In older, established neighbourhoods, an open front porch doesn't count.
- A steep roof or raised main floor can push the height over the limit.
Notes
- Deleted by 21P2024 effective January 1, 2025, then restored by Bylaw 9P2026 effective August 4, 2026. This district is in force again.
- Identical to R-C1 but Secondary Suite is a permitted use; a Backyard Suite needs City approval (24P2018, s.386).
- Front setback is contextual (s.396).
Is a specific Calgary lot zoned R-C1s?
Amest reads the current district for any Calgary address and shows the buildable envelope, setbacks and unit count for that exact lot — free.
Check an address →Bylaw sections: Purpose (s.384), Permitted uses (s.385), Parcel width (s.390), Parcel depth (s.391), Parcel area (s.392), Parcel coverage (s.393), Front setback (s.396), Side setback (s.397), Rear setback (s.398), Height (s.399). Read the live City of Calgary bylaw for this district →
Related Calgary districts
- R-1 — Residential – One Dwelling District
- R-1N — Residential – Narrow Parcel One Dwelling District
- R-1s — Residential – One Dwelling District
- R-2 — Residential – One/Two Dwelling District
- R-2M — Residential – Low Density Multiple Dwelling District
- R-C1 — Residential – Contextual One Dwelling District
- R-C1L — Residential – Contextual Large Parcel One Dwelling District
- R-C1Ls — Residential – Contextual Large Parcel One Dwelling District
All Calgary zoning districts →
Digitized from the City of Calgary Land Use Bylaw 1P2007 as amended (incl. Bylaw 9P2026, effective August 4, 2026). Amest is not the City of Calgary, a planning authority, or a law firm. Preliminary information only — confirm with the City and a qualified professional before buying or building.