R1 zoning in the City of Langley: what can you build?
Suburban Residential
On a standard lot with a rear lane, R1 allows up to 4 units on a 33 × 122 ft lot (house with secondary suite, garden suite and carriage home); up to 4 units on a 50 × 122 ft lot (house with secondary suite, garden suite and carriage home); up to 4 units on a 66 × 122 ft lot (house with secondary suite, garden suite and carriage home). These figures come from running BuildHere’s engine on each lot size with the City of Langley rules for this zone.
Most units by lot size
| Lot (with lane) | Most units | Building form | Max floor area |
|---|---|---|---|
| 33 × 122 ft4,026 sq ft | Up to 4 units | House with secondary suite, garden suite and carriage home | 4,058 sq ft |
| 50 × 122 ft6,100 sq ft | Up to 4 units | House with secondary suite, garden suite and carriage home | 6,148 sq ft |
| 66 × 122 ft8,052 sq ft | Up to 4 units | House with secondary suite, garden suite and carriage home | 8,116 sq ft |
Building options on a 33 × 122 ft lot
| Option | Status | Units | Max floor area |
|---|---|---|---|
| Single detached house | Allowed | 1 | 4,058 sq ft |
| House with secondary suite | Allowed | 2 | 4,058 sq ft |
| House with secondary suite and garden suite or carriage home | Allowed | 3 | 4,058 sq ft |
| House with secondary suite, garden suite and carriage home | Allowed | 4 | 4,058 sq ft |
| Plex home: duplex | Allowed | 2 | 4,058 sq ft |
| Plex home: triplex | Allowed | 3 | 4,058 sq ft |
| Plex home: fourplex | Allowed | 4 | 4,058 sq ft |
Size limits for house with secondary suite, garden suite and carriage home on a 33 × 122 ft lot
| Max floor area (FSR 1.01) | 4,058 sq ft | LANGLEY R1 s.5 |
|---|---|---|
| Max height | 29.5 ft, about 2.8 storeys | LANGLEY R1 s.5 |
| Site coverage | 36% of site | LANGLEY R1 s.5 |
| Front setback | 19.7 ft | LANGLEY R1 s.5 |
| Side setback | 4.9 ft | LANGLEY R1 s.5 |
| Rear setback | 19.7 ft | LANGLEY R1 s.5 |
| Rough building footprint | up to 1,453 sq ft | Estimate, not a design |
| Parking stalls required | 5 stalls (minimum) | LANGLEY s.3.7 |
Your lot will differ.
Frontage, depth, lane access, corner lots and frequent-transit areas all change the answer. Search your address for a report on the real lot in the City of Langley.
Common questions
How many units can I build in R1 zoning in the City of Langley?
With a rear lane and outside a frequent-transit area, R1 allows up to 4 units on a 33 × 122 ft lot (house with secondary suite, garden suite and carriage home); up to 4 units on a 50 × 122 ft lot (house with secondary suite, garden suite and carriage home); up to 4 units on a 66 × 122 ft lot (house with secondary suite, garden suite and carriage home). Your own lot's frontage, depth and location change the result.
What is FSR?
Floor space ratio (FSR) is a building’s total floor area divided by the lot area. An FSR of 1.0 on a 4,026 sq ft lot allows about 4,026 sq ft of floor area across all storeys. Some bylaws, such as Burnaby’s R1, set no FSR at all; there BuildHere shows an effective FSR worked out from the height, setback and lot coverage limits.
Where do these R1 rules come from?
From City of Langley Zoning Bylaw, 2025, No. 3300 (adopted March 9, 2026): s.2.5 Residential Zones within a Designated Transit Oriented Area, s.2.6 Density Requirements, s.3.5 and 3.7 Off-Street Parking, s.5 Residential Zones (R1, R2, R3, R4), Electronic version published on langleycity.ca, provided for convenience only consolidation (rules approved 2026-10-20). Preliminary screening only. Verify with the City of Langley.