Nanaimo, BC

Building permits in Nanaimo

Nanaimo says building permits are required for structural alterations, additions, demolitions, layout changes and specified plumbing changes.

Official sources checked Sep. 24, 2026

Permit rules by project

Pick the project that matches your work. These are starting rules for Nanaimo; property-specific zoning, heritage and trade approvals can still apply.

Decks

Check size / scope

Nanaimo requires a permit for a new deck, structural deck repair or deck rebuild. A permit can be avoided only when all published exemption conditions are met, including low height, no roof and no attachment.

Sheds & accessory buildings

Check size / scope

Nanaimo requires a building permit for a new detached accessory building such as a garage, shed or workshop over 10 m².

Basement renovations

Depends on scope

Nanaimo requires permits for structural alterations, additions and layout/use changes; basement work depends on whether those regulated changes are part of the project.

Interior alterations

Depends on scope

Nanaimo requires permits for structural alterations and layout/use changes; purely cosmetic interior work does not automatically fall into those categories.

Garages / carports

Depends on scope

Nanaimo requires a building permit for detached garages and other standalone accessory buildings over 10 m²; attached or other garage/carport scopes can follow different alteration rules.

Plumbing / HVAC

Depends on scope

Nanaimo requires permits for additions, alterations, relocations or removals of water-supply and drain-waste-vent piping and has separate service permit routes; exact trade requirements depend on scope.

Retaining walls

Depends on scope

Nanaimo states that a building permit is generally required when a retaining wall is over 4 feet high, but other factors can change whether a permit is needed.

Demolition

Depends on scope

Nanaimo requires a separate demolition permit for complete demolition of a building or removal of a mobile/prefab home; decks and specified non-structural removals do not require a separate demolition permit.

Apply or ask Nanaimo

Use the municipality’s permit office for current forms, fees, drawings and questions about your property.

Nanaimo Permit Centre / Building

Hours
Mon–Fri, 8 a.m.–4:30 p.m.
Contact the permit office ↗

Your application route

Open the official permit page ↗

Use the official permit page to confirm project requirements, forms, fees and the current application process.

Other approvals

Building/plumbing approval starts with Nanaimo. Electrical permitting is generally through Technical Safety BC; gas permitting is generally through Technical Safety BC. Zoning/development approval remains a separate municipal check. Province/authority source ↗

Good to know in Nanaimo

  • The city provides separate residential permit paths for alterations, secondary suites, accessory buildings, pools, fences and retaining walls.
  • Local building approval in BC sits alongside zoning and the BC Building Code. Trade work such as electrical or gas can have its own permit route.

Official sources

Use these official links to confirm the current rule for your Nanaimo property.

View 2 official sources

Sources checked Sep. 24, 2026. Requirements can change; the municipality makes the final permit decision.

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