What does a basement apartment / secondary suite permit cost?

See the published permit fee information BuildRules has verified for a basement apartment / secondary suite project in Kitchener, Ontario, with the source and limits visible.

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Focused project answerLast verified Oct 28, 2026

Published fee information

Kitchener's published duplex/granny-flat (accessory apartment) permit fee is $0.37 per square foot of finished space, subject to a $163 minimum, plus a separate $250 rebate fee automatically returned after the final building inspection is approved. Actual permit fees and other charges depend on the proposal.

Use this as a municipal-fee reference, not as the total project budget. Design, engineering, related applications and construction costs are separate.

Scope before arithmetic

Make sure the fee belongs to your project.

This is a separate project route from ordinary basement finishing because the work creates another dwelling unit.

Additional dwelling unitPermit required

Kitchener states that adding a duplex requires a building permit and includes in-law suites, accessory apartments and granny flats in that route.

Project typeSeparate from finishes-only basement work

The City publishes a dedicated duplex process rather than treating the project as ordinary basement finishing.

Zoning / designConfirm before construction

The dwelling-unit configuration and property must meet the applicable municipal and Building Code requirements.

Official sources behind this page

Additional dwelling unitPermit required

Kitchener states that adding a duplex requires a building permit and includes in-law suites, accessory apartments and granny flats in that route.

Official sourceCity of KitchenerResidential building permits · Decks, sheds, garages, basements, additions and duplex/granny-flat permits

Verified2026-10-28Open proof

Project typeSeparate from finishes-only basement work

The City publishes a dedicated duplex process rather than treating the project as ordinary basement finishing.

Official sourceCity of KitchenerResidential building permits · Decks, sheds, garages, basements, additions and duplex/granny-flat permits

Verified2026-10-28Open proof

Zoning / designConfirm before construction

The dwelling-unit configuration and property must meet the applicable municipal and Building Code requirements.

Official sourceCity of KitchenerResidential building permits · Decks, sheds, garages, basements, additions and duplex/granny-flat permits

Verified2026-10-28Open proof

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The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.

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1 published listing matches this project and Kitchener. Check each profile’s claimed status and contact options before reaching out.

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Of these 1 listings, 0 profiles are claimed by a business owner and 0 profiles include published portfolio examples. These are listing details, not independently verified qualifications or completed work.

May Engineering Inc

Building designers, Structural engineers, General contractors

Ontario engineering, design and construction firm providing structural engineering, permit and architectural drawings, project management, custom-home and renovation services across the GTA and other Ontario cities.

Based in: Brampton, Ontario
Listed service areas: Kitchener

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Listings reflect published specialties and service areas, which may not yet be confirmed by the business owner. A listing is not a professional recommendation, licence check or municipal approval. Sponsored placements are labelled.

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