RS3 zoning in Port Coquitlam: what can you build?
Residential Small-Scale 3
On a standard lot with a rear lane, RS3 allows up to 4 units on a 33 × 122 ft lot (duplex with a suite in each unit); up to 4 units on a 50 × 122 ft lot (duplex with a suite in each unit); up to 4 units on a 66 × 122 ft lot (duplex with a suite in each unit). These figures come from running BuildHere’s engine on each lot size with the Port Coquitlam 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 | Duplex with a suite in each unit | 4,010 sq ft |
| 50 × 122 ft6,100 sq ft | Up to 4 units | Duplex with a suite in each unit | 5,565 sq ft |
| 66 × 122 ft8,052 sq ft | Up to 4 units | Duplex with a suite in each unit | 7,029 sq ft |
Building options on a 33 × 122 ft lot
| Option | Status | Units | Max floor area |
|---|---|---|---|
| Single detached house | Allowed | 1 | 2,508 sq ft |
| Single detached house with secondary suite | Allowed | 2 | 2,911 sq ft |
| House with secondary suite and accessory dwelling unit | Allowed | 3 | 4,127 sq ft |
| Duplex | Allowed | 2 | 3,514 sq ft |
| Duplex with a suite in each unit | Allowed | 4 | 4,010 sq ft |
Size limits for duplex with a suite in each unit on a 33 × 122 ft lot
| Max floor area (FSR 1.00) | 4,010 sq ft | POCO RS3 s.Table 2.4, 2.5 |
|---|---|---|
| Max height | 34.4 ft, about 3 storeys | POCO RS3 s.Table 2.4 |
| Site coverage | 50% of site | POCO RS3 s.Table 2.4 |
| Front setback | 13.1 ft | POCO RS3 s.Table 2.4 |
| Side setback | 3.9 ft | POCO RS3 s.Table 2.4 |
| Rear setback | 24.6 ft | POCO RS3 s.Table 2.4 |
| Rough building footprint | up to 1,528 sq ft | Estimate, not a design |
| Parking stalls required | 3 stalls (minimum) | POCO s.8 |
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 Coquitlam.
Common questions
How many units can I build in RS3 zoning in Port Coquitlam?
With a rear lane and outside a frequent-transit area, RS3 allows up to 4 units on a 33 × 122 ft lot (duplex with a suite in each unit); up to 4 units on a 50 × 122 ft lot (duplex with a suite in each unit); up to 4 units on a 66 × 122 ft lot (duplex with a suite in each unit). 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 RS3 rules come from?
From City of Port Coquitlam Zoning Bylaw, 2008, No. 3630, Section II, Part 2 (Residential Zones: Tables 2.2, 2.3, 2.4 and Section 2.5), Current consolidated bylaw on portcoquitlam.ca, as amended through the small-scale multi-unit housing amendments (2024) and later consolidation (rules approved 2026-10-19). Preliminary screening only. Verify with the City of Port Coquitlam.