--- title: "RT-1 zone in Coquitlam: Infill Residential" place: Coquitlam, British Columbia, Canada place_path: ca/bc/coquitlam zone: RT-1 bylaw: Zoning Bylaw No. 3000, 1996 (consolidated with amending bylaws, updated July 27, 2026) bylaw_read: 2026-11-07 review: draft canonical: "https://govhandbook.com/ca/bc/coquitlam/zoning/rt-1/" json: "https://govhandbook.com/ca/bc/coquitlam/zoning/rt-1.json" --- # RT-1 zone in Coquitlam: Infill Residential Ground-oriented infill residential uses in developments of up to a maximum of four principal dwelling units per lot. ## Zone rules - **Purpose:** Ground-oriented infill residential uses in developments of up to a maximum of four principal dwelling units per lot. - **Main uses:** One-family residential; Duplex residential; Triplex residential; Fourplex residential (Duplex, triplex and fourplex need a street (and lane) at full required width; triplex and fourplex (and garden cottage and carriage house) only on lots designated Neighbourhood Attached Residential and Baycrest Low Density Residential in the Partington Creek Neighbourhood Plan.) - **Also allowed (secondary uses):** Boarding; Secondary suite; Carriage house; Garden cottage; Accessory residential; Accessory home occupation; Accessory institutional support services - **Minimum lot area:** One-family: 650 m2 (or 555 m2 where created from a lot of 1,100 to 1,951 m2 that existed before February 19, 1996; 370 m2 on lots designated Neighbourhood Attached Residential). Duplex: 740 m2 (465 m2 on Neighbourhood Attached Residential lots). Triplex: 650 m2. Fourplex: 740 m2 - **Minimum lot width:** One-family: 13.5 metres (lot depth 22.7 metres); on Neighbourhood Attached Residential lots 10 metres with an accessible lane, 12 metres without a lane or at an exterior corner. Duplex: depth 22.7 metres (Neighbourhood Attached Residential: same widths as one-family). Triplex: 18.5 metres. Fourplex: 20 metres - **Maximum lot coverage:** 50% - **Maximum density:** Floor area (all buildings and structures): one-family 0.5 times the lot area (0.6 with a secondary suite, carriage house or garden cottage on lots 370 to 465 m2, or with a carriage house or garden cottage on larger lots, if street/lane conditions are met), plus up to 40 m2 for accessory parking; duplex 0.65 times the lot area; triplex or fourplex 0.75 times the lot area. Carriage house or garden cottage: 90 m2 or the principal building floor area, whichever is less - **Maximum height:** One-family: 7.3 m, or 11.0 m for roofs with a pitch of 3 in 12 or greater over at least 80% of roof surfaces. Duplex, triplex, fourplex: 9.5 m, or 11.0 m with the same roof pitch - **Maximum height, accessory buildings:** Carriage house: 5.0 m, or 7.0 m with a roof pitch of 3 in 12 or greater over at least 80% of roof surfaces. Garden cottage and other detached accessory buildings: 3.7 m, or 4.6 m with a roof pitch of 4 in 12 or greater over at least 80% of roof surfaces - **Front setback:** 7.6 m (lots not designated Neighbourhood Attached Residential); 5.5 m (Neighbourhood Attached Residential lots) - **Rear setback:** 7.6 m (lots not designated Neighbourhood Attached Residential); 6.0 m (Neighbourhood Attached Residential lots) - **Interior side setback:** 1.8 m (lots not designated Neighbourhood Attached Residential); 1.2 m (Neighbourhood Attached Residential lots) - **Street side setback:** 3.8 m (lots not designated Neighbourhood Attached Residential); 3.0 m (Neighbourhood Attached Residential lots) - **Accessory building setbacks:** Detached accessory buildings sited 1.6 m or more from the house must be in the rear yard: rear 1.2 m, interior side 1.2 m, exterior side 3.8 m (3.0 m on Neighbourhood Attached Residential lots); on Neighbourhood Attached Residential lots less than 11 metres wide, detached parking buildings, carriage houses and garden cottages: rear 1.2 m, interior side 0.9 m, exterior side 3.0 m; accessory buildings attached to or closer than 1.6 m to the house follow the house setbacks - **Other rules:** Detached accessory buildings must be in the rear yard; a minimum 6.0 m separation from the principal building applies on Neighbourhood Attached Residential lots; Maximum wall length of a detached accessory building is 11 metres, and a detached parking building may not have more than three parking spaces; Each duplex, triplex or fourplex dwelling unit needs private or common outdoor space of not less than 37 m2 per unit and indoor storage of not less than 3.3 m2; No more than one principal building per lot ## Source - [Zoning Bylaw No. 3000, 1996 (consolidated with amending bylaws, updated July 27, 2026), s. 2206](https://www.coquitlam.ca/DocumentCenter/View/15229/Part-22-Legacy-Zones-PDF--RS-1-RS-3-RS-4-RT-1-RT-3-and-RM-3-to-RM-6-Zones#page=17) (read 2026-11-07) Rules in the bylaw's general sections (parking, fences, suites, home businesses) also apply. All zones in Coquitlam: https://govhandbook.com/ca/bc/coquitlam/zoning/index.json _Draft: taken from the bylaw text by a research agent and not yet reviewed by a person. Gov Handbook is an independent guide. Canonical page: https://govhandbook.com/ca/bc/coquitlam/zoning/rt-1/_