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New Westminster, BC suite & ADU rules

Permission first. Construction second.

A second dwelling needs both land-use permission and compliant construction. Those are related, but not interchangeable, approvals. New Westminster requires secondary-suite plans to be approved before the building permit is issued.

Main home
Secondary / ADU
One property · more than one approval layer
Interactive property lookup

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

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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
Step 1: Property basics

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

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

Step 2: Basic zoning checks

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

What does this mean?

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

Why are we asking?

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

Step 3: Possible exceptions

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

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

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

Step 4: Frequent bus check

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Municipal rules · reviewed October 16, 2026

New Westminster: secondary suite and detached ADU rules

New Westminster adopted new infill zoning on June 8, 2026. The adopted RGO-A (up to four units) and RGO-B (up to six units) districts govern designated lots, but they do not cover every parcel. The official map, site-development report and applicable overlays control property-level answers.

Secondary suite

  • Across most of the city, eligible former single-detached/duplex properties were rezoned for infill housing, including secondary suites, under RGO-A (up to 4 units) or RGO-B (up to 6 units).
  • Queensborough was not included in the June 2026 changes pending additional infrastructure work.

Garden / carriage / detached ADU

  • Laneway and carriage houses remain recognized detached infill forms and can be used for family or long-term rental.
  • Under the 2026 RGO infill program, units may generally have rental or strata tenure. This differs from older standalone laneway/carriage-house guidance; check the actual approval and applicable rules rather than promising either separate ownership or a short-term rental.
  • Infill housing projects require a Development Permit under the 2026 program.

Parking, size & site limits

  • Parking / floor area / height: use the current RGO-A or RGO-B district and 2026 Infill Housing Guide. Older streamlined laneway numbers should not be treated as universal after the June 2026 rezoning.
  • Transit: do not assign RGO-B or six units merely because the address lies 200–400 metres from SkyTrain. Check the actual RGO-B zoning map and the applicable provincial frequent-bus and transit-area rules. The city has five SkyTrain stations and separate transit-oriented development controls.
  • Fire access / servicing: a development permit is required for infill projects. Projects exceeding three units can face substantial sewer, water, fire-access, right-of-way and frontage costs; a zoning allowance is not an infrastructure approval.

New Westminster suite / ADU FAQ

Do I need a permit?

Yes. A new secondary suite or detached dwelling needs the applicable New Westminster approvals and building permit before construction/occupancy. Existing work may require a legalization or existing-building review rather than simply a new-build permit.

Can I rent the unit?

Residential infill units can be rented long term. The 2026 Infill Housing FAQ says RGO-A/RGO-B infill units may be stratified, subject to the governing approvals; fee-simple rowhouses require rezoning. Do not apply older laneway-only tenure restrictions to every 2026 infill project.

Is an old or “grandfathered” suite automatically legal?

No. Age or long-standing occupancy does not by itself prove municipal approval. Check New Westminster permit/property records and, where relevant, whether a lawful non-conforming status actually exists before describing a suite as “grandfathered.”

Can I have both an internal suite and a detached ADU?

Yes in some RGO-A/RGO-B configurations, subject to total unit count and 2026 infill development standards. Confirm the current district rather than using the pre-2026 laneway program alone.

2026 adopted zoning · parcel-level exceptions

New Westminster: what the zoning result means

These are the adopted district ceilings, not guarantees of a building permit or available servicing.

RGO-A — up to four homes

The 2026 zoning district permits single detached homes, duplexes, multiplexes and secondary suites. The total four-unit limit counts principal homes and secondary suites. A development permit and building approvals still apply.

RGO-B — up to six homes

RGO-B generally applies RGO-A rules with a six-unit ceiling and a particular off-street-parking map exception. Do not infer RGO-B from a SkyTrain distance alone; the zoning designation must be confirmed.

Queensborough — 2029 extension

Queensborough was not rezoned under the June 2026 mainland infill program. The City received an SSMUH compliance extension until May 4, 2029. Existing property zoning still governs suites and other allowed uses; the extension is not a blanket ban.

Queen’s Park and protected heritage

Heritage protections, heritage alteration permits and registered agreements may affect building changes, additions or demolition. The City says heritage agreements cannot reduce density below provincial statutory minimums. A zoning allowance is not a heritage alteration approval.

Official property verification: use the City's Property Information Portal and CityViews Site Development Report for zoning and title-related follow-up. A property result must not be treated as fully verified until parcel identity, active zone, heritage, servicing and permitted development form are checked.

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.

How this guide was verified

Guide verification: Official-source research summary. This guide provides linked municipal research; a complete enacted-bylaw, zoning-map and amendment cross-check has not been documented for this municipality.

Property confidence: Not assessed. City-wide guidance does not confirm permission for a particular parcel. Check official zoning, overlays and permits. How verification works →

Official New Westminster sources

Reviewed October 16, 2026 against official 2026 zoning and infill guidance. This is a planning summary, not a permit decision. Confirm the current zoning, registered title constraints, servicing and permit requirements for the specific property before design or construction.

V69.125 primary-source update · October 16, 2026: The City says its Infill Housing Program was adopted June 2026 on eligible mainland properties; the zoning designation controls the RGO-A/RGO-B maximum, and Queensborough needs separate infrastructure/rezoning review. Official municipal record ↗ Not yet verified: Full PID-to-legal-parcel/GIS join, up-to-date neighbourhood and heritage polygon coverage, and an independent 100-property hosted lookup audit. This city is not parcel-complete. No comprehensive current-by-law signoff or parcel approval is claimed.