R4 zoning in the City of Langley: what can you build?
Mid Rise Residential
On a standard lot with a rear lane, R4 allows about 7 units on a 50 × 122 ft lot (apartment); about 14 units on a 66 × 122 ft lot (apartment with density bonus). 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 | None outright | – | – |
| 50 × 122 ft6,100 sq ft | About 7 units | Apartment | 11,796 sq ft |
| 66 × 122 ft8,052 sq ft | About 14 units | Apartment with density bonus | 28,182 sq ft |
Building options on a 50 × 122 ft lot
| Option | Status | Units | Max floor area |
|---|---|---|---|
| Apartment | Allowed | About 7 | 11,796 sq ft |
| Apartment with density bonus | Allowed | About 7 | 11,796 sq ft |
Size limits for apartment on a 50 × 122 ft lot
| Max floor area (FSR 1.93) | 11,796 sq ft | LANGLEY R4 s.3 and s.2.6 a |
|---|---|---|
| Max height | 131.2 ft, about 12 storeys | LANGLEY R4 s.5 |
| Site coverage | 100% of site | LANGLEY R4 s.5 |
| Front setback | 9.8 ft | LANGLEY R4 s.5 |
| Side setback | 19.7 ft | LANGLEY R4 s.5 |
| Rear setback | 19.7 ft | LANGLEY R4 s.5 |
| Rough building footprint | up to 980 sq ft | Estimate, not a design |
| Parking stalls required | 10 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 R4 zoning in the City of Langley?
With a rear lane and outside a frequent-transit area, R4 allows about 7 units on a 50 × 122 ft lot (apartment); about 14 units on a 66 × 122 ft lot (apartment with density bonus). Smaller lots fall short of the zone's minimums. 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 R4 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.