Projects Not Requiring Building Permits in Ottawa

Projects Not Requiring Building Permits in Ottawa


From the City of Ottawa website on 2020.March.10  You may also want to visit the more detailed Do I need a building permit? page on that site.

Some projects are exempted from having to obtain a building permit.  However, your project must still comply with the Ontario Building Code and any applicable law, such as the Zoning By-law.

A detached accessory structure (gazebo, tool shed, etc.) that measures less than 10 square metres (approx.108 square feet) does not require a building permit.

Designated Heritage Buildings or buildings located within a Heritage District Overlay are not subject to exemptions and require that you contact a Building Client Service Centre representative for specific information.

The following is a list of projects that are exempt from having to obtain a permit:

  • Installing asphalt shingles on a roof
  • Damp proofing of existing basements
  • Replacing doors or windows (provided they are in the same size opening)
  • Replacing kitchen or bathroom cabinets (provided plumbing fixtures remain in same location)
  • New flooring
  • Installation of air conditioning units or heat pumps
  • Replacing an existing hot water tank
  • Fences (not enclosing a pool – see Pool Enclosure By-law 2013-39)
  • Pool heaters
  • Painting and decorating
  • Landscaping
  • Deck less than 24 inches above grade, except main entrance

If you are unsure that the scope of your project does not require a building permit please contact Building Code Client Service Centre or 3-1-1 for more information. You can also e-mail



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