BC guides › Squamish · Last checked October 24, 2026
Can you build an ADU (accessory dwelling unit) in Squamish?
Yes, on most house lots. Squamish calls it an accessory dwelling unit (ADU), and its pre-reviewed plans call some of them ADUs. You can have one on any lot zoned for a single house, including R-1.
- Up to 969 sq ft (90 m²) of living space
- Up to 8 m or 3 storeys, whichever is less
- Just 1.5 m from the back line, or 0.61 m if it backs onto a lane
- No extra parking needed. No Airbnb, and it can’t be sold separately
Will it fit on your lot?
Enter your address. Get your lot size, zone, a rough cost and local rent, free by email.
Can I build one on my property?
Most likely yes. Squamish allows one ADU per lot in every zone that allows a single house. There’s no special zone to hunt for. If you own a house on a normal Squamish lot, the zoning is almost certainly on your side.
What you still need to sort out is servicing: getting water, sewer and storm drains to your property line. Depending on your lot, that can need a service agreement with the District, and it’s the part most likely to cost real money. Flood construction levels may also need to be set for your building permit.
The setback is the big deal. The ADU only has to be 1.5 m (5 ft) from the back line, or 0.61 m (2 ft) if the back line is on a lane. That’s one of the most relaxed rules in BC, and it’s often the difference between a backyard home fitting on a lot and not fitting.
Squamish Laneway House rules at a glance
| Rule | Squamish |
|---|---|
| What it’s called | Accessory dwelling unit (ADU) |
| How many | 1 per lot, in any zone that allows a single house |
| Max size | 90 m² (969 sq ft) of living space |
| Over a garage | The whole building can be 180 m²; living space still max 90 m² |
| Max height | 8 m or 3 storeys, whichever is less |
| From the back line | 1.5 m (0.61 m if the back line is on a lane) |
| Parking | No extra space needed |
| Sell it separately | Not allowed |
| Short-term rental | Not allowed |
| Suite in the house | Up to 90 m² or 40% of the house, whichever is less |
Which zones? Every zone that allows a single house, including R-1. Your free Site Report checks your zone for you.
Get my free Site ReportUse the District’s pre-reviewed plans to jump the queue
Squamish publishes nine pre-reviewed ADU designs in three types: ADU (above a garage), Elevated Cottage (raised, in the back yard) and Front-Yard ADU. Because the District has already reviewed them, an application using one gets priority in the permit queue, and you skip the cost of drawing a design from scratch. If one fits your lot, it’s likely your fastest and cheapest route.
What will it cost, and what could it earn?
Build cost: the 2024 cost estimates for the District’s pre-reviewed ADU plans were about $464 to $495 per sq ft, and a front-yard ADU was estimated at $120,000 to $195,000. Costs have gone up since 2024, so treat these as a floor, not today’s price. On top of that come design, permits, servicing and site work.
City charges — ask about this before you spend anything. On 17 February 2026 the District adopted a new development cost charge bylaw and a brand-new amenity cost charge bylaw. Development charges went up 70% to 150%. At the single-family rate, a new home faces $37,066 in development cost charges plus $18,828 in amenity cost charges — about $55,894.
But it may not apply to you. The District’s own Housing Action Plan lists a 2025 action to exempt accessory dwelling units from development cost charges. We could not confirm whether that has actually happened. So your ADU is in one of three situations: no exemption and about $55,894; exempt from the development charge but not the amenity charge, so $10,190 to $18,828; or exempt from both, leaving only permit and connection costs.
That is a swing of roughly $56,000 — around 12 to 14% of the whole project. Phone the District on 604-815-6872 and ask three things: does an accessory dwelling unit pay development cost charges, does it pay amenity cost charges, and at which rate. Get the answer before you pay anyone for drawings. Anything you read about Squamish fees written before February 2026 is now too low.
Still to come on top: the building permit fee, the water, sewer and storm connection charge, the lot grading charge and refundable deposits. The deposits come back to you at the end; the rest do not.
Rent: Squamish has had an extraordinarily tight rental market. Empty rentals were 0.7% in 2024, and 0% in both 2016 and 2023 (District of Squamish data). In 2026, one-bedroom units of 538 to 614 sq ft were advertised at $2,295 to $2,700 a month, and new purpose-built buildings advertised one-bedrooms from $1,695 to $2,200, two-bedrooms from $2,850 and a three-bedroom at $3,600.
New rental buildings are competing hard for tenants. One brand-new Squamish building is currently offering one month free plus a year’s parking at $5 a month. That is a big-building tactic for filling hundreds of units at once, not something a Laneway House landlord normally does, but it tells you renters have more choice right now. An ADU with its own entrance, yard and parking is a different home from a tower apartment, so compare your rent with other houses and suites, and look at the newest buildings’ own websites so you know what renters are weighing you against.
And do not assume a tenant. That 0.7% vacancy figure is from 2024 and 2025 has not been published — landlords with no vacancies do not give away a month’s rent. New supply has been arriving and the market looks softer than those numbers suggest. Squamish is still one of the strongest rental markets in BC, but build a month or two of vacancy into your numbers. Your free report works out the figures for your lot.
Your free Squamish Site Report includes:
- Your PID, real lot size and zone
- A drawing of your lot’s shape and size
- Build cost for the size you want
- Local rent and how many years to pay it back
- Permit steps and ways to pay for it
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Common questions
How big can it be?
Up to 90 m² (969 sq ft) of living space. If it sits above a garage, the whole building can be up to 180 m², because the garage doesn’t count against your living space.
How tall can it be?
8 m or 3 storeys, whichever is less. Three storeys is more than most BC cities allow for a backyard home.
Do I need to add a parking spot?
No.
Can I have a basement suite and a backyard home?
Very likely yes. The District’s Director of Community Planning has said publicly that any single-family home in Squamish is eligible to add both a suite and an ADU, and noted that allowing both goes further than most municipalities do. The District sees backyard homes as its biggest source of rental housing, because Squamish has very little purpose-built rental.
That is a senior District official on the record rather than a line we can point to in the bylaw, so confirm it for your own lot on 604-815-6872. But if it holds, your property can hold the main house, a suite inside it, and an ADU — three homes and two rental incomes.
Can I sell it or put it on Airbnb?
No to both. You can rent it long-term, but you can’t sell it on its own or use it as a short-term rental.
Is there a cheaper way to get it designed?
Yes. Use one of the District’s nine pre-reviewed plans. You skip most of the design cost and get priority in the permit queue.
How do I get a permit?
Start with an enquiry to confirm your zone and services. Apply and pay the application fee. Get water, sewer and storm to your property line (this may need a service agreement). The permit is issued once the fees are paid. Book your inspections as you build, and your deposits come back at the end. Planning and building: 604-815-6872.
See what fits on your Squamish lot
General information only. Rules checked 24 October 2026. Rules change, so always confirm with the District of Squamish before you build.
Sources: District of Squamish: secondary suites and ADUs · District of Squamish: building permits · District of Squamish rental vacancy open data