{"title":"100 Mile House secondary suite and carriage house rules","question":"Can I add a secondary suite or a carriage house?","slug":"secondary-suite","place":{"path":"ca/bc/100-mile-house","name":"100 Mile House","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":"District of 100 Mile House","url":"https://www.100milehouse.com"},"short_answer":"In 100 Mile House a secondary suite is allowed only inside a single detached dwelling, in zones that list it, and needs a building permit. A coach house is listed only in the ER-2 zone. Both need municipal sewer.","aliases":["secondary suite 100 mile house","basement suite 100 mile house","coach house 100 mile house","carriage house 100 mile house"],"cost":"Building permit fees apply (see building-permit-fees). No separate suite fee is on the sheet.","how_long":"The District's pages do not state a processing time for building permits.","where":[{"type":"in_person","label":"Municipal Hall","value":"#1-385 Birch Ave., 100 Mile House, BC V0K 2E0","note":"Monday to Friday, 8:30 a.m. to 4:30 p.m."},{"type":"phone","label":"District office","value":"250-395-2434"}],"documents":[],"forms":[{"title":"Zoning Bylaw No. 1466 (PDF)","url":"https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf"},{"title":"Building Permits, District of 100 Mile House","url":"https://www.100milehouse.com/business-development/building-permits"}],"related":[{"slug":"building-permit","title":"100 Mile House building permits: when you need one and how to apply","url":"https://govhandbook.com/ca/bc/100-mile-house/building-permit/"},{"slug":"zoning-lookup","title":"100 Mile House zoning: find your zone and what it allows","url":"https://govhandbook.com/ca/bc/100-mile-house/zoning-lookup/"}],"nearby":[{"place":"ca/bc/clinton","name":"Clinton","url":"https://govhandbook.com/ca/bc/clinton/secondary-suite/"},{"place":"ca/bc/williams-lake","name":"Williams Lake","url":"https://govhandbook.com/ca/bc/williams-lake/secondary-suite/"},{"place":"ca/bc/cache-creek","name":"Cache Creek","url":"https://govhandbook.com/ca/bc/cache-creek/secondary-suite/"},{"place":"ca/bc/barriere","name":"Barriere","url":"https://govhandbook.com/ca/bc/barriere/secondary-suite/"},{"place":"ca/bc/clearwater","name":"Clearwater","url":"https://govhandbook.com/ca/bc/clearwater/secondary-suite/"},{"place":"ca/bc/ashcroft","name":"Ashcroft","url":"https://govhandbook.com/ca/bc/ashcroft/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":"Allowed only as an accessory use inside a single detached dwelling, and only in zones that list it: A-1, A-2, A-3, ER-1, ER-2, R-1, R-1/SR, R-2 and R-3. It is not listed in the multi-unit residential, commercial or industrial zones.","short":"Yes, in zones that list it (A-1 to R-3)","status":"stated","sources":[{"url":"https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf","title":"Zoning Bylaw No. 1466, 2026 (PDF), District of 100 Mile House","section":"s. 5.20.1; s. 8.1.3(h), 8.2.3(d), 9.1.3(e), 9.3.3(e), 9.5.3(d), 9.6.3(d)","quotes":["A secondary suite, where permitted within this Bylaw, is permitted only as an","h) secondary suite, contained within a residence.","e) secondary suite.","d) secondary suite."]}],"check":{"result":"matched","text_date":"2026-11-08"}},"detached_allowed":{"label":"Coach house or garden suite allowed","value":"A coach house is listed as an accessory use only in the ER-2 (Horse Lake Road Residential) zone. It must be in the rear or side yard, up to 50% of the main building's floor area or 90 m² (whichever is less), on municipal sanitary sewer, and not on a parcel with a secondary suite.","short":"Only in ER-2 zone, with conditions","status":"stated","sources":[{"url":"https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf","title":"Zoning Bylaw No. 1466, 2026 (PDF), District of 100 Mile House","section":"s. 5.21 and s. 9.2.3(d)","quotes":["d) coach house;","A coach house may only be permitted in the rear yard or side yard, subject to","A coach house will not be permitted if a secondary suite has been","No coach house shall be permitted without a municipal sanitary sewer","maximum floor area does not exceed 50% of the floor area of the principal","permitted use or 90 square metres, whichever is less."]}],"check":{"result":"matched","text_date":"2026-11-08"}},"limits":{"label":"Limits","value":"One suite per single detached dwelling; at most the lesser of 90 m² or 40% of the dwelling's total floor area; needs a municipal sanitary sewer connection; no strata titling; not allowed with a bed and breakfast or a coach house on the parcel.","status":"stated","sources":[{"url":"https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf","title":"Zoning Bylaw No. 1466, 2026 (PDF), District of 100 Mile House","section":"s. 5.20.2 to 5.20.9","quotes":["No more than one secondary suite will be permitted in a single detached","The maximum floor area of a secondary suite must not exceed the lesser of","90 square metres or 40% of the total floor area of the single detached","No secondary suite shall be permitted without a municipal sanitary sewer","Strata titling of a secondary suite will not be permitted.","A secondary suite will not be permitted in conjunction with a bed and"]}],"check":{"result":"matched","text_date":"2026-11-08"}},"parking":{"label":"Parking","value":"One onsite parking space, in addition to the parking required for the main dwelling.","short":"1 space, in addition to main dwelling","status":"stated","sources":[{"url":"https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf","title":"Zoning Bylaw No. 1466, 2026 (PDF), District of 100 Mile House","section":"s. 5.20.5 and Table 1","quotes":["A secondary suite must provide one onsite parking space.","Secondary Suite 1 space not including off-street parking required for"]}],"check":{"result":"matched","text_date":"2026-11-08"}},"permits":{"label":"Permits","value":"A building permit, which the District requires for any construction, addition, alteration or change of use; the suite must meet all District bylaws and the B.C. Building Code. A development permit is needed only if the property is in a development permit area.","status":"stated","sources":[{"url":"https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf","title":"Zoning Bylaw No. 1466, 2026 (PDF), District of 100 Mile House","section":"s. 5.20.8","quotes":["A secondary suite must comply with all relevant District Bylaws, and the B.C."]},{"url":"https://www.100milehouse.com/business-development/building-permits","title":"Building Permits, District of 100 Mile House","section":"Building Permits page","quotes":["A building permit is required for any construction, addition, alteration, change of use"]},{"url":"https://www.100milehouse.com/business-development/development-permits-variances/development-permits","title":"Development Permits, District of 100 Mile House","section":"Development Permits page","quotes":["Prior to obtaining a Building Permit, a Development Permit may be required."]}],"check":{"result":"matched","text_date":"2026-11-08"}},"bylaw":{"label":"Bylaw","value":"Zoning Bylaw No. 1466, 2026 (s. 5.20, 5.21); Building Bylaw No. 695, 1996","status":"stated","sources":[{"url":"https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf","title":"Zoning Bylaw No. 1466, 2026 (PDF), District of 100 Mile House","section":"cover","quotes":["Zoning Bylaw No. 1466, 2026"]},{"url":"https://www.100milehouse.com/sites/default/files/2023-05/bylaw%20695%20consolidated%20Building%20Bylaw_updated%20May%2016%202023.pdf","title":"Building Bylaw No. 695, 1996 consolidation (PDF), District of 100 Mile House","section":"cover","quotes":["BUILDING BYLAW NO. 695, 1996"]}],"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. 1466](https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf) allows a secondary suite only as an accessory use inside a single detached dwelling, and only in zones that list it: A-1, A-2, A-3, ER-1, ER-2, R-1, R-1/SR, R-2 and R-3. It is not listed in the multi-unit residential, commercial or industrial zones.\n\nA coach house is listed as an accessory use only in the ER-2 (Horse Lake Road Residential) zone.\n\n## Steps\n\n1. Confirm your zone allows a suite (see zoning-lookup).\n2. Check the limits below.\n3. Apply for a building permit; the suite must meet all District bylaws and the B.C. Building Code.\n4. If your property is in a development permit area, a development permit is also needed.\n\n## Good to know\n\n- One suite per single detached dwelling, at most the lesser of 90 m² or 40% of the dwelling's total floor area.\n- Needs a municipal sanitary sewer connection. No strata titling. Not allowed with a bed and breakfast or a coach house on the parcel.\n- Parking: one onsite space, in addition to the parking for the main dwelling.\n- A coach house goes in the rear or side yard, up to 50% of the main building's floor area or 90 m² (whichever is less), on municipal sanitary sewer, and not on a parcel with a secondary suite.\n- The bylaw states no owner-occupancy requirement.","sources":[{"url":"https://www.100milehouse.com/sites/default/files/2026-11/Zoning%20Bylaw%20No.%201466%2C%202026%20-%20CONSOLIDATED.pdf","title":"Zoning Bylaw No. 1466, 2026 (PDF), District of 100 Mile House","accessed":"2026-11-08"},{"url":"https://www.100milehouse.com/sites/default/files/2023-05/bylaw%20695%20consolidated%20Building%20Bylaw_updated%20May%2016%202023.pdf","title":"Building Bylaw No. 695, 1996 consolidation (PDF), District of 100 Mile House","accessed":"2026-11-08"},{"url":"https://www.100milehouse.com/business-development/building-permits","title":"Building Permits, District of 100 Mile House","accessed":"2026-11-08"},{"url":"https://www.100milehouse.com/business-development/development-permits-variances/development-permits","title":"Development Permits, District of 100 Mile House","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/100-mile-house/secondary-suite/","markdown":"https://govhandbook.com/ca/bc/100-mile-house/secondary-suite.md","json":"https://govhandbook.com/ca/bc/100-mile-house/secondary-suite.json"}}