Building Permits

Family walking with dog down sidewalk

Building permits allow the municipality to protect the interests of both individuals and the community as a whole. By reviewing and approving building permit applications before any work is done, the municipality can ensure that buildings comply with:

  • the Ontario Building Code, which sets standards for the design and construction of buildings to meet objectives such as health, safety, fire protection, accessibility and resource conservation
  • the local zoning bylaw and other planning controls on buildings
  • other applicable legislation, including conservation authority approvals and certain requirements under the Environmental Protection Act.

When Do I Need a Building Permit?

You must obtain a building permit before you:

  • construct any new building over ten square meters in area or place another structure, such as a mobile home, on your property
  • make renovations or repairs or to a building
  • construct an addition onto a building
  • change the use of a building
  • excavate or construct a foundation
  • construct a seasonal building
  • undertake work regarding the installation, alteration, extension or repair of an on-site sewage system
  • undertake work regarding the installation, alteration, extension or repair of any plumbing
  • construct a retaining wall exceeding 1000mm in exposed height
  • construct a sign
  • install a solar collector with a face area equal to or greater than 5 m2 onto a building
  • construct a deck that has a height which exceeds 600mm above finished ground level adjacent to the deck, a building area that exceeds 10m2 or is attached to a building
  • install a wood burning appliance

When a building permit is required, the permit must be issued and in the possession of the Property Owner prior to the start of any construction activity

  • A permit application is available from the Building Division office at Thorold City Hall or here.

For more information

For more information, please see the following Information Packages

Information Brochure

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© 2018 The Corporation of the City of Thorold, 3540 Schmon Parkway, PO Box 1044, Thorold ON, L2V 4A7

Hours of Operation: 8:30 a.m. to 4:30 p.m. Monday to Friday

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