Squamish, BC suite & ADU rules

Permission first. Construction second.

Squamish permits secondary suites, accessory dwelling units and small-scale multi-unit housing through zone-specific rules. Start with the property lookup, then confirm the mapped zone and site conditions before design or construction.

Main home

Secondary / ADU

One property · more than one approval layer

Interactive property lookup

Check a B.C. property by address.

Select a B.C. property to check the parcel, available zoning and suite-planning data.

Free property review

Find out what your lot allows. Free.

Send your property address and we'll review your lot's SSMUH eligibility, unit potential, and realistic options. You get a straight answer within one business day. No cost. No obligation. Get the property answer first.

Request my free lot review →

Can’t find your address?

Use the manual property check below.

Start with the municipality and parcel area. The manual check stays open here, but the questions are split into 4 short steps so you do not have to scroll through everything at once.

Manual property check

Check the lot using what you know.

Four short steps. Answer what you know and choose “Not sure” for anything you have not checked.

Step 1 of 4Property basics

Municipality

Parcel area

m² ft²

Use the parcel area from your property record, assessment or municipal mapping tool.

What are you planning? optional

This does not change the provincial unit-count math. It only tailors the next-step checklist in your result.

Does local zoning allow residential use on this property?

If you do not know the zoning, choose Not sure.

Is this property inside the municipality’s urban boundary?

What does this mean?

If you have never checked this on a municipal map or plan, choose Not sure.

Is this a regular low-density residential zone?

Why are we asking?

Think houses, duplexes or small multiplexes. If you only know the zone code, choose Not sure.

Does this property have both city water and city sewer?

Does zoning require newly created lots to be about 1 acre or larger?

This is about subdivision rules, not the size of your current lot. Choose Not sure unless you know.

Is this property inside an official Transit-Oriented Area (TOA)?

A TOA is a special mapped area around major transit. If you have never checked the map, choose Not sure.

Is this property officially heritage protected?

Has the municipality specifically confirmed a hazard exemption for this property?

Choose Yes only if the municipality has specifically confirmed it. Otherwise choose Not sure.

Has an official map confirmed this property is within 400 m of a qualifying frequent bus stop?

If you have not checked an official map, choose Not sure.

Private by default: the calculation runs in your browser. No name, phone number or email is required.

Calculator loading…

101-city rule audit · reviewed September 20, 2026

What may be possible in Squamish?

This is the planning answer first: it separates the dwelling form from building-code compliance. A “likely permitted” result still needs the actual parcel checked before design or construction.

Likely permitted — verify dwelling type

Internal additional unit

Squamish permits secondary suites in qualifying single-unit and two-unit dwellings; confirm the principal dwelling form and current zone.

Likely permitted — verify zone

Detached garden / backyard unit

Accessory dwelling units are permitted in zones that permit a single-unit dwelling, subject to the District’s site and building rules.

Property-specific

Duplex

Current R-1 through R-5 rules vary by zone; the property zone determines whether a duplex principal form is permitted.

Property-specific

Triplex

R-1, R-3, R-4 and R-5 include triplex paths, while other zones can have lower unit caps; confirm the exact property zone.

Property-specific

Fourplex

R-1, R-4 and R-5 include fourplex paths; confirm the exact property zone and site standards.

Maximum units & key limits

Unit-count rule: Squamish now uses zone-specific R-1 through R-5 residential rules. R-1 and R-4 allow up to five total dwelling units; R-2 is capped at two; R-3 is capped at three; principal triplex/fourplex permission varies by zone.

Verified constraints: Principal form, lot coverage, height, setbacks, accessory-unit rules and flood-hazard conditions remain zone/site specific.

Parking: Use the current District zoning requirements for the selected housing form; do not infer a single city-wide parking rule.

What the property check still needs

Property branches: Exact R-zone; current principal dwelling form; accessory-unit combination; flood-hazard/site rules; servicing; permit path.

Servicing: Confirm District water/sewer and any project-specific servicing requirements.

Governing framework: District of Squamish Zoning Bylaw No. 2200, current residential zoning changes, and the B.C. Building Code.

How to read this result: Use the property checker to identify the parcel, then confirm the exact Squamish zone. The current R-zone controls which principal housing forms and accessory units can be combined.

Do not assume: A city-wide permission for secondary suites or ADUs does not mean every principal housing form or unit combination fits every Squamish zone.

Open the current official Squamish residential zoning source ↗

Province + municipal-source screen · zoning permission and building-code compliance remain separate checks.

Municipal rules · reviewed September 20, 2026

Squamish: secondary suites, ADUs and small-scale multi-unit housing

Squamish permits secondary suites and accessory dwelling units through its zoning bylaw and has updated R-1 through R-5 residential zones for small-scale multi-unit housing. The exact principal form and total unit combination still depend on the mapped zone and site conditions.

Secondary suite

Secondary suites are permitted in qualifying single-unit and two-unit dwellings under the current zoning framework.
The suite remains part of the same real-estate entity as the principal dwelling and requires the applicable building-permit/occupancy path.
The principal dwelling type and the zone’s total-unit limit still matter when combining a suite with other housing forms.

Accessory dwelling unit (ADU)

ADUs are permitted in zones that permit a single-unit dwelling and include detached coach, carriage and laneway-style forms.
One ADU per parcel is the standard accessory path; floor area, setbacks, height and flood/site rules still apply.
Confirm the current zone and whether the proposed principal-dwelling/accessory-unit combination stays within that zone’s total unit cap.

Duplex, triplex and fourplex

R-1 permits single-unit, duplex, triplex and fourplex principal forms and allows up to five total dwelling units.
R-2 permits single-unit and duplex forms with a two-unit total cap; R-3 adds triplex with a three-unit total cap.
R-4 and R-5 permit single-unit, duplex, triplex and fourplex principal forms, subject to the current zone/site standards.

Squamish suite / ADU FAQ

Do I need a permit?

Yes. Creating or legalizing a suite or ADU requires the applicable District permit and inspection/occupancy path; zoning permission and Building Code compliance are separate checks.

Can I have a secondary suite or ADU?

Often, but the principal dwelling and current zone matter. Squamish permits these accessory forms through its zoning bylaw, subject to the applicable unit cap and site standards.

Can I build a duplex, triplex or fourplex?

Possibly. The current R-1 through R-5 residential zones allow different principal forms. Confirm the exact property zone before relying on a unit count.

Can I combine a fourplex with another unit?

Some Squamish zones allow accessory units in addition to principal units, but the total-unit cap and the selected principal/accessory combination must fit the exact zone. Check the current zone schedule before design.

Optional project planning

After the rule check: budget and contractor scope

Use these tools only after confirming the municipal path. Cost planning and contractor matching do not establish zoning, code compliance or permit approval.

1 · BudgetEstimate renovation costs in SquamishOpen the matching Home Cost Canada city page, then adjust the project and scope.Open cost planner →2 · ContractorFind a local BC contractorBC Quote is a separate contractor-matching service. Use it after the zoning and permit path are understood.Start contractor match →

Official Squamish sources

Squamish residential zoning changes ↗Squamish secondary suites & accessory dwelling units ↗B.C. Small-Scale Multi-Unit Housing ↗

Reviewed September 20, 2026. Confirm the current property zoning, site constraints, servicing and permit requirements before design or construction.