RD4 zone in Delta
Infill Duplex Residential Zone. Infill duplex housing on smaller duplex lots.
24lots in this zone on the map
260 m²median lot size (2,804 ft²)
257–296 m²smallest to largest lot
8 mmaximum height (26 ft)
The rules
| Name | Infill Duplex Residential Zone |
|---|---|
| Homes allowed | 1 duplex per Land Title Act lot (1 unit per bare-land strata lot) plus suites, within the s.6.1.2(g) cap of 4 (3 on lots <= 280 m2; 6 in Frequent Transit Area) |
| Floor space ratio | 0.3 + 93 m² |
| Floor space notes | Lot area x 0.3 + 93 m2 (s.12.40.4). In North Delta (Schedule D) net GFA capped at 360 m2 per Land Title Act lot, 180 m2 per bare-land strata lot. 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 5 m (16 ft), side 1.5 m (5 ft), rear 7.5 m (25 ft), flank 3.5 m (11 ft) |
| Setback notes | Front 6.5 m on arterial/collector streets, 5 m elsewhere (garage 6 m); interior side 1.5 m (0 m at shared duplex wall); exterior side 3.5 m; rear 7.5 m; accessory 12/1/6.5/1 m (s.12.40.6). 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)). Min lot: Bare land strata lot: 252 m2 / 9 m / 28 m depth (s.12.40.8(b)). |
| Bylaw sections | s.12.40, s.6.1.2(g)-(h), s.6.1.8 |
What you can use it for
Duplex dwellingSecondary suite (side-by-side duplex only)Home occupationDetached ADUs subject to s.6.1.2(g)-(h)
What BC law allows on these lots
- 3 homes (lots up to 280 m²)16 lots
- 4 homes (lots over 280 m²)8 lots
Our estimate per lot under BC's Bills 44 and 47, from lot size, transit distance and the urban boundary.
Example lots in RD4
- 9170 Nagasaka Lane 296 m² · 3,186 ft²
- 9172 Nagasaka Lane 292 m² · 3,143 ft²
- 9174 Nagasaka Lane 292 m² · 3,143 ft²
- 9176 Nagasaka Lane 293 m² · 3,154 ft²
- 9180 Nagasaka Lane 277 m² · 2,982 ft²
- 9182 Nagasaka Lane 258 m² · 2,777 ft²
- B 9170 Nagasaka Lane 296 m² · 3,186 ft²
- B 9172 Nagasaka Lane 292 m² · 3,143 ft²
- B 9174 Nagasaka Lane 292 m² · 3,143 ft²
- B 9176 Nagasaka Lane 293 m² · 3,154 ft²
Other zones in Delta
RS1RD3RS5RS2RS7RS6RA20RA112RT40RS4RS4ATH2RSCRT76RA120RT50RSFRD2RT62RS3RD1RH40RA6
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.