RS4A Zoning in Delta — Single Detached Residential 4A Zone
RS4A — Single Detached Residential 4A Zone is a residential zoning district in the City of Delta. Smaller single detached housing on lots at least 610 m2.
On a typical RS4A-zoned lot you can expect up to 4 dwelling units, an FSR of about 0.25, a hard cap of 232.25 m² of floor area however large the lot, a maximum height of 9.5 m (2.5 storeys), and site coverage up to 45%. Exact figures vary with lot size, frontage, and form of development — look up your specific address to confirm.
Intent of the RS4A district
Smaller single detached housing on lots at least 610 m2.
RS4A at a glance
| Max dwelling units | 4 |
|---|---|
| Max units near frequent transit | 6 |
| Floor space ratio (FSR) | 0.25 |
| Max height | 9.5 m |
| Max storeys (by right) | 2.5 |
| Site coverage | 45% |
| Zone category | Residential |
Density tiers in RS4A
| Tier | Min lot area | Max units | FSR | Max height |
|---|---|---|---|---|
| Single Detached Residential 4A Zone | 610 m² | 4 | 0.25 | 9.5 m |
Permitted uses in RS4A
- Single detached dwelling
- secondary suite
- home occupation
- accessory dwelling units (SSMUH)
RS4A zoning FAQ
What is RS4A zoning in Delta?
RS4A (Single Detached Residential 4A Zone) is a residential zoning district in the City of Delta. Smaller single detached housing on lots at least 610 m2.
What can you build on RS4A-zoned land in Delta?
Permitted uses in RS4A include Single detached dwelling, secondary suite, home occupation, accessory dwelling units (SSMUH). Permitted uses are allowed outright; conditional uses may require Development Permit Board approval.
What is the FSR for RS4A in Delta?
Floor Space Ratio (FSR) in RS4A is about 0.25. The ratio is not the whole rule here: floor area is no more than 232.25 m², so on many lots the absolute figure governs rather than the ratio. ZoneScout calculates the maximum buildable floor area for your specific lot.
How tall can a building be in RS4A?
RS4A permits a maximum building height of 9.5 m, generally about 2.5 storeys. Height can be affected by view corridors, setbacks, and the specific form of development.
How many units are allowed in RS4A zoning?
RS4A allows up to 4 dwelling units on an eligible lot. Within a Frequent Transit Area the figure rises to 6, which depends on the lot being close enough to a prescribed transit stop. Under the Province's Bill 44 Small-Scale Multi-Unit Housing rules, most standard residential lots in Delta now permit multiple units outright. The exact number depends on lot size and whether rental tenure is secured.
Other residential zones in Delta
- RA6 — Apartment Residential 6 Zone
- RA20 — Apartment Residential 20 Zone
- RA112 — Apartment Residential 112 Zone
- RA120 — Apartment Residential 120 Zone
- RA180R — Apartment Townhouse Residential 180 Rental Zone
- RD1 — Duplex/Single Detached Residential 1 Zone
- RD2 — Duplex/Single Detached Residential 2 Zone (Beach Grove waterfront)
- RD3 — Duplex/Single Detached Residential 3 Zone
Look up a specific address in Delta
Source: official Delta zoning bylaw (PDF) · updated August 2026