RT-1 zoning in Coquitlam: what can you build?
Infill Residential
On a standard lot with a rear lane, RT-1 allows up to 4 units on a 66 × 122 ft lot (fourplex). These figures come from running BuildHere’s engine on each lot size with the 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 | None outright | – | – |
| 50 × 122 ft6,100 sq ft | None outright | – | – |
| 66 × 122 ft8,052 sq ft | Up to 4 units | Fourplex | 6,469 sq ft |
Building options on a 66 × 122 ft lot
| Option | Status | Units | Max floor area |
|---|---|---|---|
| Single detached house | Allowed | 1 | 4,456 sq ft |
| Single detached house with secondary suite | Allowed | 2 | 4,456 sq ft |
| Duplex | Allowed | 2 | 5,664 sq ft |
| Triplex | Allowed | 3 | 6,469 sq ft |
| Fourplex | Allowed | 4 | 6,469 sq ft |
Size limits for fourplex on a 66 × 122 ft lot
| Max floor area (FSR 0.80) | 6,469 sq ft | CQ RT-1 s.2206(5)(e) |
|---|---|---|
| Max height | 36.1 ft, about 3 storeys | CQ RT-1 s.2206(10) |
| Site coverage | 50% of site | CQ RT-1 s.2206(6) |
| Front setback | 24.9 ft | CQ RT-1 s.2206(8) |
| Side setback | 5.9 ft | CQ RT-1 s.2206(8) |
| Rear setback | 24.9 ft | CQ RT-1 s.2206(8) |
| Rough building footprint | up to 3,907 sq ft | Estimate, not a design |
| Parking stalls required | 6 stalls (minimum) | CQ s.706 |
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 Coquitlam.
Common questions
How many units can I build in RT-1 zoning in Coquitlam?
With a rear lane and outside a frequent-transit area, RT-1 allows up to 4 units on a 66 × 122 ft lot (fourplex). 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 RT-1 rules come from?
From City of Coquitlam Zoning Bylaw No. 3000, 1996, Part 10 (RS-2, RT-2), Part 12 (RM-1, RM-2, RA-1 to RA-3) and Part 22 (RS-1, RS-3, RS-4, RT-1, RT-3, RM-3 to RM-6), 2026 consolidation (rules approved 2026-10-15). Preliminary screening only. Verify with the City of Coquitlam.
Other Coquitlam zones
R-1R-2R-3R-4RS-1RS-2RS-3RS-4RT-2RT-3RTM-1RM-1RM-2RM-3RM-4RM-4ARM-5RM-6RA-1RA-2RA-3RMH-1