A garden suite in Greater Victoria typically costs $150,000 to $450,000+ all in, according to published figures from Victoria builders such as Stillwater Custom Homes (page checked Oct 2026). Where your lot sits on that range depends less on finishes than on three things most people underestimate: how far the suite is from your water, sewer and power connections, how big your municipality lets you build, and which fees your municipality charges. This guide breaks the garden suite cost in Victoria BC into line items, compares the size rules in Saanich, Langford and the City of Victoria, and works out how long the rent takes to pay it back.
What does a garden suite cost in Victoria BC, line by line?
Every garden suite budget has the same lines. The table shows each one, what drives it, and where a published Greater Victoria figure exists. Totals vary so much by lot that a single "average" number is not useful on its own.
| Line item | What drives the cost | Published reference (Greater Victoria) |
|---|---|---|
| Design, drawings and survey | Stock plan vs custom design, site survey, any engineering for slopes or rock | Not published as a separate line by local builders |
| Permits and application fees | Municipality and construction value (see the fee table below) | "Low thousands" to $15,000+ (Stillwater) |
| Site prep and foundation | Rock, slope, tree protection, access for equipment to the back yard | Highly site-specific |
| Servicing: water, sewer, power (and gas if any) | Distance to the main house or street, trench length, rock, whether the panel or water service must be upsized | $10,000 to $30,000+ (Stillwater) |
| Shell and finishes | Size, roof form, windows, kitchen and bathroom spec | $350 to $500+ per sq ft overall (Stillwater) |
| Heating and ventilation | Zero Carbon Step Code means no gas heat in most local municipalities (see below) | Included in per sq ft figures |
| Parking and EV | Saanich requires one extra stall with Level 2 EV charging for a garden suite | Site-specific |
| Municipal charges | Amenity and development cost charges where they apply | Victoria ACC $2,290.80 per garden suite |
Small buildings cost more per square foot than large ones, because a kitchen, a bathroom, a foundation and three service connections cost about the same whether the suite is 400 or 1,000 sq ft. Expect the smallest suites to sit at the top of any per sq ft range.
How big can a garden suite be in Saanich, Langford and Victoria?
The size cap sets your cost ceiling and your rent ceiling at the same time, so start here. These rules come from each municipality's current bylaw or guide (checked October 2026). Always confirm your own lot with the municipality before you design.
| Rule | Saanich | Langford | City of Victoria |
|---|---|---|---|
| Minimum lot | 400 m2, zoned RS or RD, inside the sewer area or urban containment boundary | Lots over 400 m2 | Set by Schedule M; confirm your lot with the City |
| Maximum floor area | 93 m2 (1,000 sq ft) | 65 m2 (700 sq ft) | 37 m2 (about 400 sq ft); 56 m2 (about 600 sq ft) on a "plus site" |
| Maximum height | 3.5 m | 4.5 m | 3.5 m; 4.2 m and 1.5 storeys on a plus site |
| Parking | One additional stall with Level 2 EV charging (application checklist) | Check with Langford | Check with the City |
| Other | Owner occupancy and setbacks: confirm in the current garden suite guide | Carriage suites up to 90 m2 allowed on lots over 1,000 m2 | Not permitted where the house already has a secondary suite under Schedule M; different rules apply on SSMUH lots |
A Victoria "plus site" is a corner lot, a lot with two street frontages, or a lot with rear lane access. On lots that qualify for small-scale multi-unit housing (SSMUH), the City disapplies parts of Schedule M, and a garden suite can be one of the units. If your lot could take three or four units, compare a garden suite against the other options in our guide to how many units you can build on your lot before you commit.
What are the servicing costs for a garden suite (water, sewer, power)?
Servicing is the line that turns a $200,000 suite into a $280,000 one. Victoria builders put new or upgraded water, sewer, electrical and gas lines at $10,000 to $30,000+, and that range assumes no surprises. The questions that move it:
- Sewer: Can the suite drain by gravity to the existing building sewer, or does it sit lower than the connection and need a pump? Is the existing lateral old enough that the municipality wants it replaced while you are connecting to it?
- Water: Is the existing water service big enough for two homes, or does it need upsizing from the street? Ask your municipality's engineering department whether it wants a separate service for the suite.
- Power: Does the main panel have room for a feeder to the suite, or does the house need a service upgrade? An all-electric suite with a heat pump, range and water heater adds real load. Powering a garden suite properly (trench depth, subpanel vs separate meter, load calculation) is electrical permit work done by a licensed contractor.
- Trench route: Every metre of trench through rock, roots or a finished yard adds cost. Combining water, sewer and power in a shared trench where the code allows saves money.
Garden suite plumbing follows the same logic: a short, direct run to an existing sewer connection is cheap, a long run with a pump is not. ACAP LTD handles the plumbing and electrical scope in-house through its plumbing division and electrical division, so the servicing is priced in the same quote as the building.
What permit fees and charges apply to a garden suite?
Here is what the published fee schedules produce for a garden suite with a declared construction value of $300,000. These are calculated from each municipality's current fee bylaw or schedule; confirm the exact amount at application.
| Charge | Saanich | Langford | City of Victoria |
|---|---|---|---|
| Building permit fee on $300,000 | $1,000 application fee + $13 per $1,000 = $4,900 | $63.41 + $12.66 per $1,000 to $100,000 + $10.18 per $1,000 after = $3,352.75 | Normally 1.40% ($4,200) + $100 application fee; $0 during the fee holiday to January 29, 2027 |
| Development cost charges | A garden suite is "deemed not to be a separate dwelling unit" for single-family DCC purposes | Confirm with Langford | Confirm with the City which DCC category applies |
| Amenity cost charge | No ACC bylaw found | No ACC bylaw found | $2,290.80 per garden suite (Bylaw 25-048) |
| Surety or deposits | Ask at application | Ask at application | Ask at application |
Two more items to plan for. First, the CRD's new Regional Water Supply DCC takes effect on April 2, 2027 in all 13 member municipalities. How it treats a garden suite on an existing lot is something to ask your municipality, especially if your permit will be issued after that date. Second, plumbing and electrical permits are separate from the building permit. For the full picture of what each municipality charges, see our breakdown of development cost charges in Greater Victoria.
How long does a garden suite take to pay for itself in rent?
The fair benchmark for garden suite rent is CMHC's October 2025 Rental Market Survey. It measures purpose-built apartments, not garden suites, so treat it as a floor: a detached suite with its own entry and yard often rents higher, and an older basement-style unit lower.
| CMHC October 2025 average rent | Studio | 1-bedroom | 2-bedroom |
|---|---|---|---|
| Victoria CMA | $1,349 | $1,625 | $2,120 |
| City of Victoria (zones 1-4) | $1,311 | $1,595 | $2,078 |
| Langford, View Royal, Colwood, Sooke (zone 7) | $1,585 | $1,874 | $2,378 |
| Vacancy, Victoria CMA | 4.2% | 3.5% | 3.0% |
Worked example: simple payback by municipality
The example below uses each municipality's maximum suite size, the published $350 to $500 per sq ft range, CMHC rent and vacancy for the matching unit type, and an assumed 10% of rent for extra property tax, insurance and maintenance. It ignores financing and rent growth, so treat it as a first screen, not a pro forma.
| Scenario | Build cost at $350 to $500/sq ft | Rent used | Net rent per year | Simple payback |
|---|---|---|---|---|
| Victoria, 400 sq ft studio | $140,000 to $200,000 | $1,311 (City studio), 4.2% vacancy | About $13,560 | 10 to 15 years |
| Langford, 700 sq ft 1-bedroom | $245,000 to $350,000 | $1,874 (zone 7 1-bed), 3.5% vacancy | About $19,530 | 12.5 to 18 years |
| Saanich, 1,000 sq ft 2-bedroom | $350,000 to $500,000 | $2,120 (CMA 2-bed), 3.0% vacancy | About $22,210 | 16 to 22.5 years |
The pattern is worth noticing: the smallest suite pays back fastest because rent does not fall as fast as cost does. A bigger suite still makes sense if you want it for family, for resale, or because your lot makes servicing cheap. Financing changes the picture a lot, which is why we built a calculator for it.
Garden suite vs secondary suite vs duplex: which costs less?
A basement or in-house secondary suite is almost always the cheapest way to add a rental unit, because the structure, roof and services already exist. A garden suite costs more but gives both households privacy and usually earns more rent per square foot. A new duplex or multiplex costs the most and is the only option that can create separately sellable units. The requirements for an in-house suite are covered in our guide to legal secondary suite cost and requirements in Victoria, and the three options are compared side by side in duplex vs garden suite vs house with suite.
What usually goes over budget on a garden suite?
- Access. If an excavator cannot reach the back yard, everything is dug and carried by hand or by small machine.
- Rock and slope. Rock close to the surface is common on Greater Victoria lots. Blasting or hammering for a foundation or a service trench is a common surprise.
- Service upgrades at the main house. A panel at capacity, an undersized water line or an aging sewer lateral can each add thousands.
- Trees. Protected trees can dictate where the suite and trench can go, and arborist reports cost money.
- Design changes after permit. Revisions mean re-review time and fees.
A general contractor who prices the servicing, the foundation and the building together catches most of these before you commit. See how ACAP LTD runs a project on our general contracting page.
How do I start a garden suite project?
- Confirm your lot qualifies (size, zoning, sewer area) with your municipality's planning desk.
- Locate your existing water, sewer and electrical service and the panel's spare capacity.
- Pick a size that fits both the bylaw and your payback target, using the calculator above.
- Get a builder to price servicing and foundation on site, not from a drawing alone.
- Submit drawings and the permit application; budget plumbing and electrical permits separately.
If you want a site visit and a priced scope for your lot in Saanich, Langford, Victoria or elsewhere in Greater Victoria, request a quote from ACAP LTD.