Deck Permit Checklist in London, Ontario

Deck permit checklist

Use a project-specific deck permit checklist for London, Ontario: documents, next steps, source review date and official references.

Focused project answerReviewed Oct 1, 2026

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4 items to prepare for this project.

This checklist is generated only when BuildRules has enough project-specific documentation and source context to make a separate page useful.

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Use it as a working list. The final submission still needs to match your actual scope and the City’s current requirements.

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Under 600 mm + detachedPermit not required

London states that a side or rear deck under 600 mm does not need a permit if it is not attached to the house.

Official sourceCity of LondonCommon homeowner projects · Deck permit and zoning guidance

Verified2026-10-01Open proof

Under 600 mm + attachedPermit required

The City states that the same low deck requires a permit if attached to the house.

Official sourceCity of LondonCommon homeowner projects · Deck permit and zoning guidance

Verified2026-10-01Open proof

Over 0.61 mPermit required

London’s building-permit trigger list identifies decks greater than 0.61 metres high as permit-required.

Official sourceCity of LondonBefore you apply for a building permit · Residential permit triggers, exemptions and review timelines

Verified2026-10-01Open proof

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