When is a Building Permit Required?

This information is taken from the City of Peterborough website and applies to their jurisdiction only.  You should check with your local Municipality to confirm in which circumstances they require you to apply for a Building Permit.
When is a Building Permit Required-


You must obtain a building permit before you do any of the following:

  • construct a new building
  • installation of a swimming pool (a pool enclosure permit)
  • renovate, repair or add to a building
  • demolish or remove all or a portion of a building
  • change a building’s use
  • install, change or remove partitions and load-bearing walls
  • make new openings for, or change the size of, doors and windows
  • build a garage, balcony or deck or enclose an existing deck
  • build a building over 108 sq. ft. (10 sq. m.)
  • excavate a basement or construct a foundation
  • install or modify any life safety or fire suppression system such as fire alarms, sprinkler or standpipe or fixed extinguishing systems.
  • install or modify heating, plumbing, and air conditioning systems, fireplaces, fireplace inserts and woodstoves
  • install or renovate plumbing
  • construct or reconstruct a chimney
  • to finish a basement or convert a room to a bedroom

You do not require a building permit to:

  • replace existing, same-size doors and windows, subject to distance from property lines
  • install siding on small residential buildings, subject to distance from property lines
  • build a building under 108 sq. ft. (10 sq. m.), but must conform to the zoning setbacks
  • re-shingle a roof, provided there is no structural modification
  • install eavestroughs, provided that drainage is contained on your property
  • damp-proof basements
  • paint or decorate, including interior finishes, but excluding insulation
  • reinstall/replace kitchen or bathroom cupboards without plumbing
  • erect a fence (swimming pools and outside hot tubs do require special permits)

Permits are required from the Electrical Safety Authority for any electrical work.


Contact the City of Peterborough for more information.

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