{"title":"RD4 zone in Delta: Infill Duplex Residential Zone","code":"RD4","slug":"rd4","name":"Infill Duplex Residential Zone","group":"Residential","section":"12.40","site_specific_zone":false,"summary":"Infill duplex housing on smaller duplex lots.","fields":{"purpose":{"value":"Infill duplex housing on smaller duplex lots.","quotes":["This zone is intended for infill duplex housing on smaller duplex lots."]},"primary_uses":{"value":["Duplex dwelling"],"quotes":["Duplex dwelling"]},"secondary_uses":{"value":["Home occupation","Secondary suite (accessory to a side-by-side duplex dwelling)"],"quotes":["Home occupation, accessory to a duplex dwelling","Secondary suite, accessory to a side-by-side duplex dwelling"]},"min_parcel_area":{"value":"504 m² (subdivision under the Land Title Act); 252 m² (bare land strata lot)","quotes":["Lot Area 504 m2","Lot Area 252 m2"]},"min_parcel_width":{"value":"18 m, average lot depth 28 m (Land Title Act); 9 m, average lot depth 28 m (bare land strata)","quotes":["Lot Width 18 m","Lot Width 9m","Average Lot Depth 28 m"]},"max_parcel_coverage":{"value":"45%","quotes":["Maximum lot coverage shall be 45%."]},"max_density":{"value":"Floor space ratio 0.3 of lot area plus 93 m². In North Delta, total gross floor area is limited to the lesser of 360 m² (Land Title Act lots) or 180 m² (bare land strata lots) and that amount","quotes":["lot area x floor space ratio of 0.3 + 93 m2.","the lesser of 360 m² and the total floor area permitted under Section 12.40.4(a)(i).","the lesser of 180 m² and the total floor area permitted under Section 12.40.4(b)(i)."]},"max_height":{"value":"2.5 storeys; 8 m to mid-roof or top of a flat roof; 9.5 m to roof ridge of a pitched roof","quotes":["Maximum Storeys 2.5 1","to mid-roof or the 8m 3m","to roof ridge for a 9.5 m 3.75 m"]},"max_height_accessory":{"value":"1 storey; 3 m to mid-roof or top of a flat roof; 3.75 m to roof ridge of a pitched roof","quotes":["Maximum Storeys 2.5 1","to mid-roof or the 8m 3m","to roof ridge for a 9.5 m 3.75 m"]},"setback_front":{"value":"6.5 m on arterial and collector streets; 5 m on other streets (garages 6 m unless garage doors do not face the street); accessory 12 m","quotes":["6.5 m on","arterial and collector streets","5 m on streets other than","shall be 6 m unless garage doors","Front 12 m"]},"setback_rear":{"value":"7.5 m (principal); accessory 1 m","quotes":["Rear 7.5 m 1m"]},"setback_side_interior":{"value":"1.5 m; 0 m at the shared wall of a duplex dwelling; accessory 1 m","quotes":["Interior Side 1.5 m 1m","(shared wall) for 0m N/A"]},"setback_side_exterior":{"value":"3.5 m (principal); accessory 6.5 m","quotes":["Exterior Side 3.5 m 6.5 m"]},"accessory_setbacks":{"value":"front 12 m, interior side 1 m, exterior side 6.5 m, rear 1 m","quotes":["Front 12 m","Interior Side 1.5 m 1m","Exterior Side 3.5 m 6.5 m","Rear 7.5 m 1m"]},"other":{"value":["A maximum of 1 duplex dwelling per Land Title Act lot; 1 dwelling unit per bare land strata lot","A secondary suite here means an accessory dwelling unit within one unit of a side-by-side duplex"],"quotes":["(a) A maximum of 1 duplex dwelling oshall be permitted on each lot created under the Land","(b) A maximum of 1 dwelling unit shall be permitted on each Bare Land Strata Lot created","means an accessory dwelling unit that is located within a dwelling unit of a side-by-side"]}},"bylaw":{"title":"Delta Zoning Bylaw No. 7600, 2017 (consolidated for reference purposes to April 21, 2026, incorporating amendments up to Bylaw No. 8552)","url":"https://delta.civicweb.net/document/177229","accessed":"2026-11-07","note":"The City's consolidation is for reference purposes only; refer to the City's online version for the current consolidation. Older site-specific \"CD\" zones (CD1 to CD495) are still regulated by the repealed Delta Zoning Bylaw No. 2750, 1977 and are not in this document; only the CDZ zones (CDZ1 onward) are written out here."},"source_url":"https://delta.civicweb.net/document/177229#page=172","place":{"path":"ca/bc/delta","name":"Delta","region":{"code":"bc","name":"British Columbia"},"country":{"code":"ca","name":"Canada"}},"urls":{"html":"https://govhandbook.com/ca/bc/delta/zoning/rd4/","markdown":"https://govhandbook.com/ca/bc/delta/zoning/rd4.md","json":"https://govhandbook.com/ca/bc/delta/zoning/rd4.json","index":"https://govhandbook.com/ca/bc/delta/zoning/index.json"}}