Zoning first, then the right drawings and the right permit sequence. A basement suite inside the house is not a laneway house, and legalizing an existing suite is not the same job as building a new one.
In British Columbia, a secondary suite is municipal business. The Province sets the Building Code framework; your city or district decides whether a suite is allowed on your lot, which permits you need, which drawings to upload, and when the unit counts as legal. There is no province-wide “suite permit.”
This guide is the process map: suite vs ADU language, legalize vs new build, zoning first, a Vancouver worked example from published City rules, Surrey and Metro notes, Island pointers, drawings, trades and occupancy, rental-licence notes, and fee-page links. Confirm every step on the live municipal page for your address before you spend money.
Not sure you need a permit at all? Start with do I need a building permit? (suites are always yes), then find the office on the BC Permit Finder. For package mechanics, use how to submit building permit drawings in BC.
People say “suite,” “basement suite,” “coach house,” “laneway,” and “ADU” as if they were one thing. Cities do not.
Wrong label → wrong checklist → incomplete application. Rear-yard detached dwellings in Vancouver use the laneway / low-density path, not the secondary-suite page. Finishing rooms inside the existing footprint as a rental unit is usually the secondary-suite path.
Two jobs get mashed into one search. They share zoning and Code outcomes; the starting evidence differs.
New suite (or suite in a new house). Design to current zoning and Code, prepare floor and site plans, apply for the permits your city requires, build under inspection, and only call it legal after the city’s final approval or occupancy steps. In Vancouver, suites built with a new house follow the new-house stream; suites added to an existing house follow the dedicated secondary-suite steps on vancouver.ca.
Legalize an existing (often unpermitted) suite. You still need zoning eligibility and a permit path that brings the unit up to current life-safety and bylaw standards. Finished work may have to be opened so inspectors can see fire separation, wiring, and plumbing. Vancouver offers an optional special inspection when legalizing an existing suite (the City’s suite page publishes the fee — confirm the live figure). That inspection does not replace plans or the permit application; Vancouver still expects a qualified design professional and/or contractor to prepare plans. Surrey likewise requires a building permit if the suite was never authorized, plus zoning compliance, Code standards, and suite utility / service fees once registered.
Buying a house with a “suite already in”? You inherit unpermitted work. Vancouver tells buyers to request an approved-use letter before relying on the suite — do that before subjects are removed.
Before you hire a designer or strip drywall, confirm the parcel’s zone allows a secondary suite for that building type. “I live in a house” is not a zoning answer. Common traps:
If zoning fails, stop. Perfect drawings will not legalize a forbidden use. Use VanMap or your city’s map, then ask planning or building when the district schedule is ambiguous. Our Permit Finder helps when mailing city and parcel municipality disagree.
Vancouver is the worked example because the City publishes a clear four-step path on Create or legalize a secondary suite. Do not copy Vancouver’s forms onto a Surrey upload. For the full Vancouver walkthrough (zoning size and below-grade rules, 2026 fees, VBBL Table 11.2.3.1 upgrades, inspections and two videos), see our Vancouver secondary suite permit guide.
Step 1 — Confirm suites are allowed. Review the Zoning and Development By-law for your district. For duplex or two-family dwellings, confirm the use is approved; contact the Development and Building Services Centre (DBSC) if unclear.
Step 2 — Plans, application, fees. Vancouver requires a development and building permit for upgrading work and to change the use to include a secondary suite. Prepare scaled, labelled floor and site plans. Floor plans must show rooms, stairs, windows, doors, plumbing and gas fixtures, and ceiling height. Plans of the main house are not required. Site plans must show on-site parking, the access path from the street to the suite entry (and protrusions into that path), lane and street, finished-floor elevation, and grade at the four corners. Submit the Development and Building Permit Application, Owner’s Undertaking Letter, and plans through the City’s electronic system. Incomplete packages are not accepted; fees are requested after intake. Optional: book a special inspection first when legalizing an existing suite — still prepare plans afterward.
Combined vs separate DP/BP. Vancouver’s building-permit page says large projects, zoning relaxations, and some land uses need a separate development permit before the building-permit application. House, duplex, and laneway work is often a combined development and building permit under low-density housing guidance. The suite page frames suite work as development and building permit work for the change of use and upgrades. Ask DBSC which stream you are on — filing BP before a required separate DP is a classic bounce.
Step 3 — Build, trade permits, inspections. After issuance, keep the printed permit and a full-size City-stamped drawing set on site. Apply for trade permits (plumbing, electrical, gas, fire sprinkler as required) and book inspections. Vancouver’s rule: a secondary suite is not legal until the final inspection has been passed.
Step 4 — Finish and decide on a business licence. Family occupying the suite does not need a business licence under the City’s published suite guidance; long-term rental does. Short-term rental of the suite is only allowed if you are the principal resident living in the suite. Unpermitted suites are not eligible for short- or long-term licences.
Fee math, VBBL quirks, and DCLs: our Vancouver building permit guide and the City’s fee schedule PDF. Also: Get a building permit and forms, checklists, and bulletins.
Surrey. Install or legalize only if you meet zoning, hold the building permits, meet the BC Building Code, pay secondary-suite utility and service fees, and submit a building-permit application if the suite was never authorized. Use Surrey’s Secondary Suite Permit path and Digital Submission Guide. Surrey’s suite bulletin expects a scaled site plan (lot, suite and primary locations, parking) and floor plans showing fire separation, room uses and sizes, exits and bedroom egress windows, smoke alarms, exhaust, wall construction, and heating sources — plus title search and application form. Fees: Surrey’s estimator / fee schedule and our Surrey building permit guide. Background: Building or legalizing a secondary suite.
Metro cities differ on portals, whether electrical is municipal or Technical Safety BC, and whether a suite registration or utility declaration sits beside the building permit. Do not assume Vancouver’s licence rules or Surrey’s 40% floor-area rule travel with you.
On Vancouver Island the same zoning-first logic applies; portals and occupancy language differ. Victoria’s What Can I Do With My Property page states a suite is legal when required building, plumbing, and electrical permits are approved, work is inspected, and a final Occupancy Permit is issued. Confirm eligibility with the Zoning Regulation Bylaw and VicMap, then apply with the correct SFD/duplex checklist. Official: Victoria — What Can I Do With My Property. Full Victoria walkthrough (zoning, plans, bylaw fees and the 2026 fee waiver, BC Building Code suite rules, inspections and two videos): our Victoria secondary suite permit guide. Process and fees: our Victoria building permit guide and Victoria development permit guide.
Saanich, Langford, Nanaimo, Duncan, and the Cowichan Valley each publish their own suite or residential-alteration rules — use the matching city guide here, then the municipal checklist. For Nanaimo, our Nanaimo secondary suite permit guide walks through the zoning and two-suite rule, the 2026 parking bylaw, Bylaw 7336 fees, BC Building Code suite rules and inspections, with two videos. For the City of Duncan (not North Cowichan or the CVRD), our Duncan secondary suite permit guide covers jurisdiction, Zoning Bylaw 3166 suite and parking rules, the flood construction level, Bylaw 3212 fees and inspections, with two videos. Wait-time language: BC building permit wait times by city.
Cities reject incomplete suite packages. Cross-check only — the municipal checklist wins:
Packaging rules (PDFs, seals, portals): How to submit building permit drawings in BC.
A building permit is not a plumbing, electrical, or gas permit — most suite jobs need some combination. Inside Vancouver, electrical and gas are municipal (not Technical Safety BC). In Surrey and much of the rest of BC, those trades typically run through Technical Safety BC while the city handles the building permit — confirm for your address.
Book inspections in order (rough-in before covering walls; final when ready). Keep approved drawings on site. Vancouver voids building permits if work does not start within six months of issuance; other cities have their own clocks. Victoria’s occupancy-permit language and Vancouver’s final-inspection language mean the same trap: do not advertise a legal suite before the city says it is finished.
Building approval and rental licensing are related but separate. Published patterns:
If you rent to a tenant, the Residential Tenancy Act also applies. This site is not landlord-tenant advice — verify licences on the city business-licence page before you list the unit.
Suite fees vary. Amounts move with fee bylaws, construction value, separate development permits, deposits, utility declarations, and DCCs/DCLs. Point your budget at:
Most houses, suites, decks and garages fall under Part 9 of the BC Building Code 2024: buildings of 3 storeys or less, up to 600 m², with residential or certain other uses (Division A, 1.3.3.3). Bigger buildings fall under Part 3, which always needs registered professionals and Letters of Assurance (Division C, 2.2.7.1).
On a Part 9 project, the Code requires a registered professional (an engineer or architect who seals drawings and signs Letters of Assurance) only for parts outside Part 9. Examples are beams with point loads, girder trusses, engineered products, soil or foundation conditions beyond Part 9, and retaining walls that support a foundation. The province also recommends professional design for other retaining walls over 1.2 m. For the rest, the Code doesn’t say who must draw the plans. The city sets the drawing standard.
Vancouver’s Building By-law adds more cases that need registered professionals, including some Part 9 buildings. Nanaimo asks for “designer-quality” plans. Anywhere else, ask the city.
Checked October 26, 2026: BC Building Code 2024 (PDF) · Guide to Letters of Assurance (PDF) · Letters of Assurance (gov.bc.ca) · EGBC guidelines · AIBC: does your project need an architect? · Nanaimo plan requirement checklist (PDF)
Yes — fire separation, egress, zoning, and inspections all apply. See do I need a permit?.
No. A secondary suite is inside the principal dwelling; a laneway / coach / garden suite is detached, with its own zoning and often its own permit stream.
Confirm zoning, optionally book a special inspection, prepare scaled floor and site plans, submit the development and building permit application with the owner’s undertaking letter, pay fees when requested, complete trades and inspections, and pass final inspection. Follow vancouver.ca.
Confirm zoning and any land-use contract or building-scheme restrictions, prepare Surrey’s suite drawing set, submit via the Secondary Suite Permit / digital path, obtain the building permit, meet Code, and pay suite utility / service fees when registered. Start at surrey.ca and our Surrey guide.
When your municipality says so — usually after permits, inspections (and occupancy where used), and any registration or licence steps are complete. A finished kitchen alone is not legalization.
Often yes for long-term rental to non-family tenants (Vancouver and Burnaby publish that pattern). Confirm on your city’s business-licence pages; short-term rules are separate and stricter.
No. Independent information only — verify on the municipality’s website before you apply, build, or advertise a suite.
This page is unofficial guidance for readers in British Columbia. It is not published by any municipality, the Province, or Technical Safety BC. It is not legal, engineering, architectural, landlord-tenant, or building-code advice. Rules and fees change without notice. Verify every requirement with the authority having jurisdiction for your address before you design, upload, renovate, or rent. No permit acceptance, timeline, cost, or rental approval is guaranteed.
Related: Do I need a permit? · Submit drawings · Vancouver · Vancouver secondary suites · Nanaimo secondary suites · Duncan secondary suites · Surrey · Burnaby · Victoria · Victoria secondary suites
This guide relies on the official pages below. Rules, fees and processes change, so check the authority before you apply or spend money.
Links checked September 25, 2026. Found an error or a broken link? Report it.