Greater Sudbury building permit guide

Deck permit rules in Greater Sudbury

Greater Sudbury requires a permit for an attached deck or a deck beside an exit door. A small detached deck may qualify for an exemption.

2 min readLast verified Nov 7, 2026
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The short answerConditional

Greater Sudbury requires a permit for an attached deck or a deck beside an exit door. A small detached deck may qualify for an exemption.

The City’s deck checklist describes the exemption for a deck under 10 m², below 60 cm, detached from the building and away from an exit door. Ask Building Services about designs on the size or height boundary before relying on the exemption.

Conditions and exceptions to check

  • When you need a permit: Greater Sudbury requires a permit for an attached deck or a deck beside an exit door. A small detached deck may qualify for an exemption.
  • Fees and applications: Greater Sudbury adjusts its fees annually. Ask Building Services to confirm the current fee for your application.

Official source

Next step

Measure height and area and locate any nearby exit door.

Municipal guidance only. Your property's zoning and other applicable approvals may change the result.

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Greater Sudbury / Deck

Greater Sudbury requires a permit for an attached deck or a deck beside an exit door. A small detached deck may qualify for an exemption.

City of Greater Sudbury · BuildRules reviewed 2026-11-07

Know what matters

Know what applies to your project.

Check the conditions below before you finalize the scope. Every answer connects to an official source.

When you need a permitGreater Sudbury requires a permit for an attached deck or a deck beside an exit door. A small detached deck may qualify for an exemption.Conditional

The City’s deck checklist describes the exemption for a deck under 10 m², below 60 cm, detached from the building and away from an exit door. Ask Building Services about designs on the size or height boundary before relying on the exemption.

Source · City of Greater Sudbury

Decks, Porches and Balconies

Source checked Nov 7, 2026Open official source
Fees and applicationsGreater Sudbury adjusts its fees annually. Ask Building Services to confirm the current fee for your application.Info

Source · City of Greater Sudbury

Building Permit Fees

Source checked Nov 7, 2026Open official source

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Plan ahead

Fees and timing

Review timeline

Confirm the current municipal service standard.

Permit fees

Greater Sudbury adjusts its fees annually. Ask Building Services to confirm the current fee for your application.

Different project, different permit question

Planning a shed instead of a deck?

A shed can have different permit and placement conditions. Use the published Greater Sudbury shed guide rather than this deck guide to check its applicable rules and municipal sources.

Greater Sudbury shed permit requirements

From reading to doing

Your next steps.

Follow the practical steps in the published Greater Sudbury guide. Confirm unresolved details with the City before committing to work.

  1. Measure height and area and locate any nearby exit door.

  2. Check the municipal requirements for your address and project scope.

  3. If a permit is required, submit it through Pronto and wait for issuance before starting work.

Trace the evidence

Official sources behind this guide.

These are the source documents linked in the rules above. Check the municipal authority for current requirements before submitting a project.

A little more clarity

Common questions.

Where do I apply in Greater Sudbury?

Start with Pronto. The linked municipal guidance describes which project category and documents to use.

Know the approval terms

The permit decision can involve more than one rule.

Use these plain-language definitions to understand the conditions above, then check the official source for your municipality.

Same project, different city

See how this rule changes across Ontario.

Compare the source-reviewed answer for this project across every municipality BuildRules currently covers.

Compare deck rules by city

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01 Permit and local-rule guidance02 Documents to prepare03 Questions still to verify
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