RM-4 zoning in the Township of Langley: what can you build?
Multiple Family Residential 4
On a standard lot with a rear lane, RM-4 allows about 5 units on a 66 × 122 ft lot (apartment building). These figures come from running BuildHere’s engine on each lot size with the Township 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 | None outright | – | – |
| 66 × 122 ft8,052 sq ft | About 5 units | Apartment building | 4,888 sq ft |
Building options on a 66 × 122 ft lot
| Option | Status | Units | Max floor area |
|---|---|---|---|
| Apartment building | Allowed | About 5 | 4,888 sq ft |
Size limits for apartment building on a 66 × 122 ft lot
| Max floor area (FSR 0.61) | 4,888 sq ft | TOL RM-4 s.504.2 |
|---|---|---|
| Max height | 49.2 ft, about 4 storeys | TOL RM-4 s.x |
| Site coverage | 40% of site | TOL RM-4 s.x |
| Front setback | 24.6 ft | TOL RM-4 s.x |
| Side setback | 24.6 ft | TOL RM-4 s.x |
| Rear setback | 24.6 ft | TOL RM-4 s.x |
| Rough building footprint | up to 1,227 sq ft | Estimate, not a design |
| Parking stalls required | 8 stalls (minimum) | TOL s.107.3 |
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 Township of Langley.
Common questions
How many units can I build in RM-4 zoning in the Township of Langley?
With a rear lane and outside a frequent-transit area, RM-4 allows about 5 units on a 66 × 122 ft lot (apartment building). 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 RM-4 rules come from?
From Township of Langley Zoning Bylaw 1987 No. 2500, as amended through Bylaw 6209 (2026): s.102 (small-scale multi-unit housing development), s.107.1 and 107.3 (parking), Sections 200 (RU), 300 (SR), 400 (R-1A to R-1E, R-CL family, R-2, MH-1, CRE-1) and 500 (RM), Section PDFs published on tol.ca consolidation (rules approved 2026-10-20). Preliminary screening only. Verify with the Township of Langley.
Other Township of Langley zones
R-1AR-1BR-1CR-1DR-1ER-CLR-CL (A)R-CL (B)R-CL (CH)R-2SR-1SR-2SR-3SR-3ASR-3BCRE-1RU-1RU-2RU-3RU-3AR-CL (RH)R-CL (SD)R-CL (MH)RM-1RM-2RM-3RM-3AMH-1RU-4RU-5RU-5AFH-1