RS4A zone in Delta
Single Detached Residential 4A Zone. Single detached housing of a smaller size on lots at least 610 m2 in area.
240lots in this zone on the map
658 m²median lot size (7,088 ft²)
595–2,554 m²smallest to largest lot
8 mmaximum height (26 ft)
The rules
| Name | Single Detached Residential 4A Zone |
|---|---|
| Homes allowed | 4 (single detached or duplex + suites + up to 2 garden suites/coach houses); 3 on lots <= 280 m2; 6 on lots > 280 m2 in the Schedule F Frequent Transit Area (Scott Road) |
| Floor space ratio | 0.25 + 125 m² (max 232 m²) |
| Floor space notes | Floor area = lot area x 0.25 + 125 m2, but net GFA (after s.6.2.17(a) exclusions, plus high-ceiling double count) may not exceed 232.25 m2 (s.11.41.4). Note the basement/attic exclusion in s.6.2.17(a)(ii)(1) does not apply in RS4A. Detached ADUs (garden suite/coach house) floor area up to 42 m2 each is excluded from FSR (s.6.2.17(a)(v)); each ADU must be < 50% of the principal dwelling's GFA (s.6.1.8(a)(ii)). |
| Height | 8 m (26 ft) · 2.5 storeys |
| Height notes | Principal: 8 m to mid-roof/flat roof top, 9.5 m to ridge of pitched roof; accessory 3 m / 3.75 m (detached garage 3.75 m / 4.6 m). Garden suite 1.5 storeys, 4 m / 5.5 m; coach house 2 storeys, 6.75 m / 8 m (s.6.1.8(c),(d)). See s.6.2.14. |
| Lot coverage | 45% |
| Coverage notes | Maximum lot coverage; impermeable surfaces max 60% of lot in RS1-7, RSC and RD zones (s.6.2.18). |
| Setbacks | front 6.5 m (21 ft), side 2.13 m (7 ft), rear 9 m (30 ft), flank 3.5 m (11 ft) |
| Setback notes | Principal: front 6.5, interior side 2.13 m (1.5 m for houses approved before 2005-01-01), exterior side 3.5, rear 9 m (7.5 m if 1-1.5 storeys); accessory 12/1/6.5/1 m (s.11.41.6). Garden suites and coach houses: 1.5 m interior side, exterior side and rear, not forward of the principal building's front face (s.6.1.8(c)(ii),(d)(ii)). |
| Bylaw sections | s.11.41, s.6.1.2(g)-(h), s.6.1.8, s.6.2.17 |
What you can use it for
Single detached dwellingSecondary suiteGarden suite (max 2 detached ADUs, s.6.1.2(h))Coach house (max 2 detached ADUs, s.6.1.2(h))Home occupation
What BC law allows on these lots
- 4 homes (lots over 280 m²)240 lots
Our estimate per lot under BC's Bills 44 and 47, from lot size, transit distance and the urban boundary.
Example lots in RS4A
- 11040 80a Ave 2,259 m² · 24,316 ft²
- 11353 95a Ave 688 m² · 7,406 ft²
- 11435 92a Ave 912 m² · 9,817 ft²
- 11475 93a Ave 614 m² · 6,609 ft²
- 11521 93a Ave 667 m² · 7,180 ft²
- 8123 110 St 809 m² · 8,708 ft²
- 9320 115a St 674 m² · 7,255 ft²
- 9429 Dawson Cres 1,127 m² · 12,131 ft²
- 9475 114 St 613 m² · 6,598 ft²
- 9573 Dawson Cres 668 m² · 7,190 ft²
Other zones in Delta
RS1RD3RS5RS2RS7RS6RA20RA112RT40RS4TH2RSCRT76RA120RT50RSFRD2RT62RS3RD4RD1RH40RA6
Read from Delta Zoning Bylaw No. 7600, 2017 (consolidated to 2026-04-21, incl. amendments to BL 8552) ↗, checked 2026-10-21. Summaries are our reading of the bylaw: confirm with Delta before buying or designing. Page rebuilt October 25, 2026.