Home/Cities/British Columbia/Langley
Langley, BC suite & ADU rules

Permission first. Construction second.

An internal suite and a detached garden unit can trigger different site rules, so define the project before reading the approvals. This tool helps sort the provincial layer first, while the local source below remains necessary for the property itself.

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

Enter your address and see what your property may allow.

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

This search covers City and Township of Langley addresses. The guide below covers the City; Township results show Township sources.

Enter a house number and street name to see matching B.C. addresses.

Before relying on this result, verify the property details.

The automated checker cannot confirm all zoning amendments, overlays, lot restrictions, servicing or building permits. Free human property-review requests are currently paused.

See the official verification steps →
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
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

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…

Municipal rules · reviewed September 20, 2026

Langley: secondary suite and detached ADU rules

This page is for the City of Langley, not the Township. The City adopted Zoning Bylaw 2025 No. 3300 on March 9, 2026, so earlier City zoning tables are obsolete.

Secondary suite

  • In the R1 Suburban Residential zone, a secondary suite is an expressly permitted accessory use, subject to the current Bylaw 3300 unit-count and development rules.
  • The current R1 framework can support up to four dwelling units on a lot, with different provincial/transit rules applying in designated areas.

Garden / carriage / detached ADU

  • R1 also lists garden suites and carriage homes as permitted accessory uses.
  • The current R1 maximum heights are 6.8 m for a carriage home and 4.6 m for a garden suite.

Parking, size & site limits

  • R1 base lot standards: minimum lot area 557 m² and minimum frontage 16 m under Bylaw 3300.
  • Parking: current Bylaw 3300 parking varies by R1 dwelling size/configuration and the frequent-bus area; do not use Township of Langley rules on this City page.
  • Unit count: Bylaw 3300 and provincial transit rules can change the maximum number of units by location, so the current City zoning map is required.

Langley suite / ADU FAQ

Do I need a permit?

Yes. A new secondary suite or detached dwelling needs the applicable Langley 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?

A legal suite or accessory dwelling can be rented subject to City and provincial rules. Permit/occupancy status should be confirmed before advertising the unit.

Is an old or “grandfathered” suite automatically legal?

No. Age or long-standing occupancy does not by itself prove municipal approval. Check Langley 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?

Potentially under current R1 rules, provided the total dwelling count and building form comply with Bylaw 3300. This is address-specific and must use City of Langley—not Township—zoning.

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 Langley sources

Reviewed September 20, 2026. 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.

V69.61 targeted primary-source review · October 12, 2026: The City of Langley adopted Zoning Bylaw 3300 on March 9, 2026. This guide is for the CITY, not the separate Township; the Township uses different SSMUH and development-permit rules. Official municipal record ↗ Not yet verified: Verify precise City zoning districts/parcel map and subsequent amendments. The Township rule cannot be substituted for a City lot. No comprehensive current-by-law signoff or parcel approval is claimed.