{"title":"Lake Cowichan secondary suite and carriage house rules","question":"Can I add a secondary suite or a garden suite in Lake Cowichan?","slug":"secondary-suite","place":{"path":"ca/bc/lake-cowichan","name":"Lake Cowichan","region":{"code":"bc","name":"British Columbia"},"country":{"code":"ca","name":"Canada"}},"category":{"slug":"building-and-renovating","name":"Building, renovating and your property"},"owner":"municipal","owner_label":"Municipal","owner_body":{"name":"Town of Lake Cowichan","url":"https://www.lakecowichan.ca"},"short_answer":"Yes, in Lake Cowichan a secondary suite is allowed in a single detached house in zones R-1 to R-6, and a garden suite or coach house in R-1 to R-3. Only one accessory dwelling per lot. A building permit is needed.","aliases":["secondary suite lake cowichan","basement suite lake cowichan","garden suite lake cowichan","coach house lake cowichan"],"cost":"A building permit is needed. The fee schedule values a suite in a principal residence at $100 per ft²; see the building-permit-fees answer.","how_long":"The Town's pages and bylaw state no processing time.","where":[{"type":"phone","label":"Building Inspector","value":"250-749-6681 ext. 104","note":"Tuesdays and Wednesdays, except holidays"},{"type":"email","label":"Building Inspector","value":"inspections@lakecowichan.ca"},{"type":"in_person","label":"Town Hall","value":"39 South Shore Road, Lake Cowichan, BC V0R 2G0","note":"Monday to Friday, 8:30 a.m. to 4:30 p.m., closed statutory holidays"}],"documents":[],"forms":[{"title":"Zoning Bylaw No. 1055-2021, consolidated February 24, 2026 (PDF)","url":"https://www.lakecowichan.ca/dl/1055-2021%20Zoning%20Bylaw%20Consolidated%2026-02-24.pdf"},{"title":"Building Bylaw No. 1075-2022 (PDF)","url":"https://www.lakecowichan.ca/dl/1075-2022%20Building%20Regulations.pdf"}],"related":[{"slug":"building-permit","title":"Lake Cowichan building permits: when you need one and how to apply","url":"https://govhandbook.com/ca/bc/lake-cowichan/building-permit/"},{"slug":"building-permit-fees","title":"Lake Cowichan building permit fees","url":"https://govhandbook.com/ca/bc/lake-cowichan/building-permit-fees/"},{"slug":"zoning-lookup","title":"Lake Cowichan zoning: find your zone and what it allows","url":"https://govhandbook.com/ca/bc/lake-cowichan/zoning-lookup/"},{"slug":"home-based-business","title":"Lake Cowichan home-based business rules","url":"https://govhandbook.com/ca/bc/lake-cowichan/home-based-business/"}],"nearby":[{"place":"ca/bc/ladysmith","name":"Ladysmith","url":"https://govhandbook.com/ca/bc/ladysmith/secondary-suite/"},{"place":"ca/bc/duncan","name":"Duncan","url":"https://govhandbook.com/ca/bc/duncan/secondary-suite/"},{"place":"ca/bc/north-cowichan","name":"North Cowichan","url":"https://govhandbook.com/ca/bc/north-cowichan/secondary-suite/"},{"place":"ca/bc/nanaimo","name":"Nanaimo","url":"https://govhandbook.com/ca/bc/nanaimo/secondary-suite/"},{"place":"ca/bc/lantzville","name":"Lantzville","url":"https://govhandbook.com/ca/bc/lantzville/secondary-suite/"},{"place":"ca/bc/north-saanich","name":"North Saanich","url":"https://govhandbook.com/ca/bc/north-saanich/secondary-suite/"}],"topic":{"title":"Secondary suite and carriage house rules in British Columbia, by municipality","url":"https://govhandbook.com/ca/bc/secondary-suite/"},"facts":{"suite_allowed":{"label":"Secondary suite allowed","value":"In a single detached dwelling: zones R-1 to R-6 (R-6 only in a basement or walk-out garden level). In a duplex: R-2 only on a lot of at least 780 m²; R-3 to R-5 only on a corner lot, a lot with a tandem-parking garage, or a lot of at least 780 m². R-7: within an existing non-conforming single detached dwelling, or on a duplex lot meeting the same corner, tandem or 780 m² test.","short":"Yes, in R-1 to R-6 (conditions apply)","status":"stated","sources":[{"url":"https://www.lakecowichan.ca/dl/1055-2021%20Zoning%20Bylaw%20Consolidated%2026-02-24.pdf","title":"Zoning Bylaw No. 1055-2021, consolidated February 24, 2026 (PDF)","section":"Part V, s. 5.1.3 (accessory uses, R-2 to R-6) and R-7","quotes":["A secondary suite is permitted on a lot with a single detached dwelling.","A secondary suite is permitted on a lot with a duplex, provided it is a lot of a minimum 780 square metres.","provided it is a corner lot, or has a garage with tandem parking, or lot of a minimum 780 square metres.","The secondary suite is in a basement or in a walk out garden level.","Secondary suite within an existing non-conforming single detached dwelling","self-contained living quarters, including cooking equipment and a bathroom, located within the structure of a single-unit dwelling, and with its own separate entrance;","has a garage with tandem parking or is on a lot of a minimum of 780 square metres."]}],"check":{"result":"matched","text_date":"2026-11-08"}},"detached_allowed":{"label":"Coach house or garden suite allowed","value":"Garden suite or coach house: zones R-1, R-2 and R-3, on a lot with a single detached dwelling. Prohibited on lots without municipal sewer and water, and on duplex lots. One accessory dwelling per lot.","short":"Yes, in R-1, R-2, R-3; one per lot","status":"stated","sources":[{"url":"https://www.lakecowichan.ca/dl/1055-2021%20Zoning%20Bylaw%20Consolidated%2026-02-24.pdf","title":"Zoning Bylaw No. 1055-2021, consolidated February 24, 2026 (PDF)","section":"Part V, s. 5.1.3 b.","quotes":["One of three types of accessory dwelling unit is permitted on a lot with a single detached dwelling: a secondary suite, a garden suite, or a coach house.","a garden suite or coach house is prohibited on lots without municipal sewer and water service.","a coach house or garden suite is prohibited.","In all low and medium density residential zone districts one accessory dwelling unit is permitted on a lot.","ACCESSORY DWELLING – COACH HOUSE means a self-contained dwelling unit, forming the second story of a detached accessory building;"]}],"check":{"result":"matched","text_date":"2026-11-08"}},"limits":{"label":"Limits","value":"One accessory dwelling unit per lot. Secondary suite: at most 40% of the principal dwelling's floor area or 85 m² (whichever is less), at least 30 m², 2 bedrooms maximum, separate entrance. Garden suite and coach house: at most 40% or 60 m² (whichever is less), at least 30 m², 2 bedrooms maximum. No owner-occupancy rule found. Garden suite goes in the rear yard (lakeside or riverside lots may use front or side yard).","status":"stated","sources":[{"url":"https://www.lakecowichan.ca/dl/1055-2021%20Zoning%20Bylaw%20Consolidated%2026-02-24.pdf","title":"Zoning Bylaw No. 1055-2021, consolidated February 24, 2026 (PDF)","section":"Part V, ss. 5.1.8 to 5.1.10","quotes":["Maximum size is 40% of gross floor area of principal dwelling, or 85 square metres, whichever is less.","Maximum size is 40% of gross floor area of principal dwelling, or 60 square metres, whichever is less.","Minimum size is 30 square metres.","Maximum number of bedrooms is 2 (two).","A Garden suite shall be located in the rear yard of the principal dwelling, except in","Entrance shall be a separate independent entrance form the principal dwelling","In all low and medium density residential zone districts one accessory dwelling unit is permitted on a lot."]}],"check":{"result":"matched","text_date":"2026-11-08"}},"parking":{"label":"Parking","value":"1 space per secondary suite, in addition to the 2 per single dwelling. On a duplex lot that is not a corner lot or is not larger than 780 m², tandem parking is required when a suite is present. In R-6, one required space must be in a garage.","short":"1 space per suite, plus 2 for the house","status":"stated","sources":[{"url":"https://www.lakecowichan.ca/dl/1055-2021%20Zoning%20Bylaw%20Consolidated%2026-02-24.pdf","title":"Zoning Bylaw No. 1055-2021, consolidated February 24, 2026 (PDF)","section":"Schedule B, Off-Street Parking","quotes":["Dwelling unit, secondary suite 1 per unit,","tandem parking for a duplex in the event a","secondary suite is present for lots that are not on a corner,","or not greater than 780 square metres.","Single dwelling unit, including mobile & 2 per unit","One of the required off street vehicle spaces is a garage."]}],"check":{"result":"matched","text_date":"2026-11-08"}},"permits":{"label":"Permits","value":"A building permit is needed to build a suite. The fee schedule values a suite in a principal residence at $100 per ft². The zoning bylaw states no development permit requirement for suites.","status":"stated","sources":[{"url":"https://www.lakecowichan.ca/dl/1075-2022%20Building%20Regulations.pdf","title":"Building Bylaw No. 1075-2022 (PDF)","section":"s. 9(1); Schedule B","quotes":["A person must apply for, and obtain, a building permit before constructing, altering, or","Suite in a principal residence 100.00"]}],"check":{"result":"matched","text_date":"2026-11-08"}},"bylaw":{"label":"Bylaw","value":"Zoning Bylaw No. 1055-2021 (Part V and Schedule B); Building Bylaw No. 1075-2022","status":"stated","sources":[{"url":"https://www.lakecowichan.ca/dl/1055-2021%20Zoning%20Bylaw%20Consolidated%2026-02-24.pdf","title":"Zoning Bylaw No. 1055-2021, consolidated February 24, 2026 (PDF)","section":"Title page","quotes":["ZONING BYLAW NO. 1055-2021"]},{"url":"https://www.lakecowichan.ca/dl/1075-2022%20Building%20Regulations.pdf","title":"Building Bylaw No. 1075-2022 (PDF)","section":"s. 1","quotes":["Building Bylaw No. 1075-2022"]}],"check":{"result":"matched","text_date":"2026-11-08"}}},"facts_summary":{"total":6,"stated":6,"matched":6,"none":0,"unknown":0},"body_markdown":"## How it works\n\nThe [Zoning Bylaw No. 1055-2021](https://www.lakecowichan.ca/dl/1055-2021%20Zoning%20Bylaw%20Consolidated%2026-02-24.pdf) allows one accessory dwelling unit per lot in zones R-1 to R-6.\n\n- **Single detached dwelling:** a secondary suite in R-1 to R-6 (in R-6 only in a basement or walk-out garden level). In R-7, only within an existing non-conforming single detached dwelling.\n- **Duplex:** R-2 only on a lot of at least 780 m². In R-3 to R-5, only on a corner lot, a lot with a tandem-parking garage, or a lot of at least 780 m². R-7 follows the same corner, tandem or 780 m² test.\n- **Garden suite or coach house:** R-1, R-2 and R-3, on a lot with a single detached dwelling. Not allowed on lots without municipal sewer and water, or on duplex lots. R-4 to R-6 allow only a secondary suite.\n\n## Steps\n\n1. Check your zone and lot size in the Zoning Bylaw, or ask the Town.\n2. Apply for a building permit under the [Building Bylaw](https://www.lakecowichan.ca/dl/1075-2022%20Building%20Regulations.pdf).\n3. If your lot is near a watercourse or in another Official Community Plan development permit area, ask the Town whether you also need a development permit.\n\n## Good to know\n\n- Secondary suite: at most 40% of the principal dwelling's floor area or 85 m², whichever is less; at least 30 m²; no more than 2 bedrooms; separate entrance.\n- Garden suite or coach house: at most 40% or 60 m², whichever is less; at least 30 m²; no more than 2 bedrooms. A garden suite is a single-storey building in the rear yard (lakeside or riverside lots may use the front or side yard).\n- Parking: 1 space per secondary suite in addition to the 2 for the house. On a duplex lot that is not a corner lot or is not larger than 780 m², tandem parking is required. In R-6, one required space must be in a garage. Schedule B lists no parking line for garden suites or coach houses.\n- R-6 limits lot coverage to 50% with a suite.\n- The bylaw has no owner-occupancy rule that we found.","sources":[{"url":"https://www.lakecowichan.ca/dl/1055-2021%20Zoning%20Bylaw%20Consolidated%2026-02-24.pdf","title":"Zoning Bylaw No. 1055-2021, consolidated February 24, 2026 (PDF)","accessed":"2026-11-08"},{"url":"https://www.lakecowichan.ca/dl/1075-2022%20Building%20Regulations.pdf","title":"Building Bylaw No. 1075-2022 (PDF)","accessed":"2026-11-08"}],"sources_read":"2026-11-08","review":{"status":"machine_checked","badge":"Checked against official text","label":"Checked by script, not yet by a person: the official wording behind 6 of 6 facts was matched to the official text."},"urls":{"html":"https://govhandbook.com/ca/bc/lake-cowichan/secondary-suite/","markdown":"https://govhandbook.com/ca/bc/lake-cowichan/secondary-suite.md","json":"https://govhandbook.com/ca/bc/lake-cowichan/secondary-suite.json"}}