Before undergoing any type of work on your property, no matter the nature and size, check with the Building Department if a building permit is required.

It is important to plan your project in advance, especially during summer months, where the Building Department is busier.

To make sure you submit a complete application, pdfdownload the documents and drawings required for permit applications.

I need a permit for what type of projects?

Under the Ontario Building Code Act, a building permit is required to construct, demolish, renovate, alter, install or change the use of a building. The following is a list of typical projects or situations that require the issuance of a building permit:

  • Construct a new building exceeding 10 m² (107.64 pi²) in building area;
  • Install new plumbing in a building or part thereof;
  • Change the use of a building;
  • Change the fuel source of a fireplace from gas-fired to solid burning;
  • Construct an addition to an existing building;
  • Construct a deck;
  • Add or remove a structural wall in a dwelling;
  • Complete a roughed-in bathroom or washroom;
  • Alter an existing building or its plumbing system;
  • Repair a building or its plumbing system;
  • Install a new furnace utilizing a new fuel source;
  • Install a solid fuel burning appliance;
  • Complete a roughed-in fireplace;
  • Detached or attached garages and carports;
  • Solariums;
  • Addition of a dormer;
  • Raising a dwelling to provide a full basement;
  • Sunroom;
  • Install a sign;
  • Above-ground and in-ground swimming pool;
  • Replace exterior siding.

A permit is not required for the below projects

It is not necessary to obtain building permits to perform the following work. However, you must comply with the requirements of the Zoning By-law and if applicable, the Ontario Building Code.

  • Retaining walls less than 1 metre (39.4 inches) in height;
  • Sidewalks;
  • Planters and landscaping;
  • Replacement of plumbing fixtures;
  • Replacement of hot water heaters. Please note of the requirement since September 2004 to limit hot water to 49°C;
  • Replacement of kitchen or bathroom cupboards by same dimensions;
  • Painting, decorating and general maintenance;
  • Replacing roof shingles on a residential dwelling;
  • Air conditioning units or heat pumps added to existing systems;
  • Replacement of furnaces by a similar heat output using same fuel;
  • Accessory buildings, storage sheds not greater than 10 m² (107.64 pi²).

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