Clarington, ON

Building permits in Clarington

Clarington says building or renovating accessory structures, additional dwelling units, decks, fences, pool enclosures and similar projects may require a building permit.

Official sources checked Sep. 24, 2026

Permit rules by project

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

Decks

Depends on scope

Clarington normally requires permits for raised porches or decks and normally exempts decks 60 cm or less from grade; attachment, area and other project details can still matter.

Sheds & accessory buildings

Check size / scope

Clarington normally requires a permit for a detached accessory structure larger than 10 m² and normally exempts detached structures 10 m² or less.

Basement renovations

Depends on scope

Clarington normally requires a permit for partitioning a basement or adding a basement entrance, while basement waterproofing repairs are listed as normally exempt.

Interior alterations

Depends on scope

Clarington requires permits for significant alterations and structural work while new wall/floor/ceiling finishes and some repairs are normally exempt; scope determines the result.

Plumbing / HVAC

Depends on scope

Clarington normally requires a permit when altering or adding plumbing, while replacement plumbing fixtures and replacement furnaces are listed as normally exempt.

Fences

Confirm with city

Clarington identifies fences as a permit topic and separately lists pool enclosures as permit work, but does not infer that every ordinary residential fence needs a building permit.

Apply or ask Clarington

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

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

Clarington handles the municipal building/plumbing layer. Electrical work is normally a separate ESA notification/inspection stream, and gas/fuels work is regulated through TSSA/authorized fuels contractors. A building permit does not replace those trade approvals. Province/authority source ↗

Good to know in Clarington

  • The municipality publishes project bulletins and permit information alongside current Ontario Building Code updates.
  • In Ontario, the municipal building permit sits within the provincial building-code system, but zoning, conservation, heritage, utilities and some trade approvals can still require separate checks.

Official sources

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

View 2 official sources

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

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