RS1 zoning in Port Moody: what can you build?
Single Detached Residential
On a standard lot with a rear lane, RS1 allows up to 4 units on a 33 × 122 ft lot (4 units); up to 4 units on a 50 × 122 ft lot (4 units); up to 4 units on a 66 × 122 ft lot (4 units). These figures come from running BuildHere’s engine on each lot size with the Port Moody 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 | 4 units (small-scale multi-unit housing) | 3,221 sq ft |
| 50 × 122 ft6,100 sq ft | Up to 4 units | 4 units (small-scale multi-unit housing) | 4,880 sq ft |
| 66 × 122 ft8,052 sq ft | Up to 4 units | 4 units (small-scale multi-unit housing) | 6,441 sq ft |
Building options on a 33 × 122 ft lot
| Option | Status | Units | Max floor area |
|---|---|---|---|
| Single detached house | Allowed | 1 | 2,013 sq ft |
| House with secondary suite | Allowed | 2 | 2,013 sq ft |
| House with secondary suite and detached additional dwelling unit | Allowed | 3 | 2,013 sq ft |
| 3 units (small-scale multi-unit housing) | Allowed | 3 | 2,818 sq ft |
| 4 units (small-scale multi-unit housing) | Allowed | 4 | 3,221 sq ft |
Size limits for 4 units on a 33 × 122 ft lot
| Max floor area (FSR 0.80) | 3,221 sq ft | PM RS1 s.5.5, 8.4.4 a |
|---|---|---|
| Max height | 34.4 ft, about 3 storeys | PM RS1 s.8.x.4 |
| Site coverage | 45% of site | PM RS1 s.8.x.4 |
| Front setback | 15.1 ft | PM RS1 s.8.x.4 |
| Side setback | 4.9 ft | PM RS1 s.8.x.4 |
| Rear setback | 4.9 ft | PM RS1 s.8.x.4 |
| Rough building footprint | up to 1,808 sq ft | Estimate, not a design |
| Parking stalls required | 2 stalls (minimum) | PM s.6.3.1 |
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 Port Moody.
Common questions
How many units can I build in RS1 zoning in Port Moody?
With a rear lane and outside a frequent-transit area, RS1 allows up to 4 units on a 33 × 122 ft lot (4 units); up to 4 units on a 50 × 122 ft lot (4 units); up to 4 units on a 66 × 122 ft lot (4 units). 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 RS1 rules come from?
From City of Port Moody Zoning Bylaw, 2018, No. 2937, consolidated for convenience (through Amendment Bylaw No. 112, 2025, No. 3523): s.5.5 Small-Scale Multi-Unit Housing, s.6.3 Required Off-Street Parking, s.8 Single Detached Residential Districts, s.9.1 Semi-Detached Residential (RT), Consolidated for convenience, amendments listed to Bylaw 3523 (adopted 2026) consolidation (rules approved 2026-10-20). Preliminary screening only. Verify with the City of Port Moody.