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Listings, map and statistics cover houses with an existing or potential suite in Duncan (including North Cowichan neighbourhoods with a Duncan address), Cowichan Bay, Crofton, Westholme, Lake Cowichan, Honeymoon Bay, Youbou, Cobble Hill, Mill Bay, Shawnigan Lake, Saltair and Thetis Island, listed through the Vancouver Island Real Estate Board. For the whole Island, see Vancouver Island homes with suites.
Houses with a basement suite, garden suite or coach house, or room to add one, in Duncan and the North Cowichan neighbourhoods around it, Lake Cowichan, Crofton, Cowichan Bay and the rural valley.
Browse Cowichan Valley homes with suites for sale: detached houses with a self-contained unit in the basement, over the garage or in the garden, or a layout ready for one, listed on the MLS® across Duncan, North Cowichan, Lake Cowichan, Crofton, Cowichan Bay, Saltair, Thetis Island and the rural areas around them.
Most suited homes are in and around Duncan, where the hillsides on the east side of town and the newer subdivisions on its edges produce many walk-out lower floors. Tenants include students at Vancouver Island University’s Cowichan Campus, health care and service workers, and people who commute over the Malahat to Victoria; many owners use the suite for a parent or a grown child instead.
Four governments and the Islands Trust write the suite rules here, and the province’s small-scale housing legislation, applied locally in 2024, affected each one differently because of their population. The sections below set out what applies in each place.
This page lists houses whose listing shows a suite as existing or potential. An existing suite is a self-contained unit that is there now, whether or not it has a permit and final inspection; a potential suite usually means a separate entrance, a rough-in or a lower floor that could be converted with work and a permit. The listing does not say which existing suites are authorized, so that check falls to the buyer.
Province-wide, every local government must now allow a secondary suite or a detached accessory unit in single-family zones, and municipalities above 5,000 people must allow three or four homes on most serviced lots. The Vancouver Island homes with suites page covers those provincial rules; here is how they land in the Cowichan Valley.
Duncan is the smallest city in Canada by area, and its 2021 census population of just over 5,000 put it above the provincial threshold for small-scale multi-unit housing. In 2024 the city rewrote the Low Density Residential zone in Zoning Bylaw 3166 to permit four homes on lots in that zone, with matching changes to its parking rules, so an older house on a full-size Duncan lot may now support a suite, a garden suite and more.
Inside the city, suited homes are mostly older houses on the streets around downtown, where a basement was finished as a rental years ago, and a smaller number of newer infill homes. A suite here is within walking distance of the downtown shops and the Village Green Mall bus exchange, which helps when renting to tenants without a car.
Suites in North Cowichan Neighbourhoods
Most of the homes with a Duncan address are actually in North Cowichan, which wraps around the city. Its urban containment boundary, which covers mostly lots on both municipal water and sewer, takes in Quamichan, Bell McKinnon, Berkey’s Corner, the University Village area near VIU’s Cowichan Campus, Crofton and Chemainus. In June 2024 North Cowichan rezoned most lots inside the boundary to allow three or four homes. VIU’s Cowichan Campus opened on University Way in 2011, and its students and staff add steady demand for small suites close by.
North Cowichan went further than the province required. It allows a garden suite or coach house on most residential properties inside the boundary and dropped the old cap on secondary suite floor area, so a large walk-out lower floor can now become one generous suite rather than having to be split or shrunk. Outside the boundary, most rural zones already allowed two dwellings.
Hillside Walk-Outs East of Duncan
The slopes on the east side of the city, along Maple Bay Road and toward Mount Tzouhalem, hold many split-level and walk-out homes from the 1960s to the 1990s with a ground-level suite or the space for one. Newer subdivisions on the edges of town add houses built with a suite from the start. Bell McKinnon, home to the new Quw’utsun Valley Hospital site on Bell McKinnon Road, is one of the neighbourhoods inside the boundary.
Crofton
Crofton is also inside North Cowichan’s urban containment boundary, so its village lots fall under the same three-to-four-unit zoning and coach-house rules as the neighbourhoods around Duncan. Suited homes there are mostly houses from the 1980s and 1990s, a few minutes from the Salt Spring Island ferry and the beach at Osborne Bay.
Homes with Suites in Lake Cowichan
With about 3,300 residents, the Town of Lake Cowichan is under the 5,000-person threshold, so the province requires it to allow one secondary suite or detached accessory dwelling in its single-family zones rather than three or four homes. In 2024 the town moved to add an accessory dwelling unit to the single-detached zones in its Zoning Bylaw 1055-2021.
Suited homes in town range from older houses near the centre, some from the 1940s, to newer houses built in the 2010s with a lower-level suite. A suite near the lake suits family visits in summer and a long-term tenant the rest of the year, and the town is exempt from the province’s principal-residence rule for short-term rentals.
Suites in the Rural Electoral Areas
In 2024 the Cowichan Valley Regional District amended eight of its nine electoral-area zoning bylaws so that most zones allowing a single detached house also allow an attached suite, and it removed the old minimum parcel size, owner-occupancy and suite-access conditions. Several areas also permitted a detached suite, such as a carriage house or garden cottage, including on Agricultural Land Reserve land subject to Commission rules:
Area B (Shawnigan Lake)
Area D (Cowichan Bay upland)
Area F (Cowichan Lake South/Skutz Falls, including Honeymoon Bay)
Area G (Saltair and the Gulf Islands)
Cowichan Bay adds some newer houses built with a suite, and rural homes in Glenora and Cowichan Station sometimes come with a cottage or second dwelling on acreage. In Glenora, Cowichan Station and Sahtlam (Area E) and in Youbou (Area I), check the current zoning before planning a detached unit. On any rural lot the septic system must be sized for the extra bedrooms and the well must supply two households, and those two items often cost more than the finishing work. For land-based checks, see the Cowichan Valley acreages and land page.
Saltair, Thetis Island and South Cowichan
Saltair’s rural lots along Chemainus Road fall under the Area G change, so a detached suite is possible where the parcel and septic allow. On Thetis Island the Islands Trust, not the regional district, sets the rules on second dwellings, and water supply usually decides whether a second unit is practical. Suited homes in Chemainus and Ladysmith are on the Nanaimo and Parksville homes with suites page.
The province’s principal-residence rule limits short-term rentals to the host’s own home plus one secondary suite or accessory unit on the same property. In the Cowichan Valley it applies in Duncan, North Cowichan and four electoral areas the regional district opted in: Area A (Mill Bay/Malahat), Area C (Cobble Hill), Area F (Cowichan Lake South/Skutz Falls) and Area H (North Oyster/Diamond). The Town of Lake Cowichan and Areas B, D, E, G and I are exempt. Local zoning and business licence rules still apply everywhere, so check both before counting on nightly income.
Checking a Suite Before You Buy
Ask the seller for the building permit and final inspection on the suite, then confirm them with the city, municipality or regional district. Check ceiling height, fire separation, smoke alarms, a separate entrance and parking, and in an older house whether the electrical service can carry two kitchens. If a tenant is in place, review the tenancy agreement, rent and deposit, since the tenancy continues after the sale unless it is ended properly. Houses without a suite are on the Cowichan Valley houses page, and the general steps of a purchase are on the buying a home page.
Cowichan Valley Suite Buyer Note
Before buying a house with a suite in the valley, confirm which of Duncan, North Cowichan, the Town of Lake Cowichan or a CVRD electoral area governs the lot, whether the suite has a permit and final inspection, what the zone allows under the 2024 small-scale housing changes, and whether the principal-residence rule for short-term rentals applies there.
Search Cowichan Valley Homes with Suites MLS® Listings
Use the listings and map at the top of this page to compare older suited homes near downtown Duncan, walk-out houses on the east side of town, newer homes built with suites, lakeside houses in Lake Cowichan and rural properties with a second unit. Every other property type is on the Cowichan Valley real estate page, and the Cowichan Valley Homes with Suites Market Report tracks prices and market times for suited homes.
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