Apply for a building permit before you start your next project in the Municipality of Trent Hills. Building permits allow you to build, add to or renovate a building. They ensure everyone's safety and that your project follows our by-laws and the Ontario Building Code.

Apply for a building permit

Complete a Permit to Construct or Demolish Application to apply. A Septic Permit Application might also be required if you're installing, replacing or repairing a septic system.  Use the Building Application Checklist to ensure that you follow all the steps and have a complete application for review

It is a violation under the Building Code Act to build without a permit.

 When do I need a building permit?

You must get a permit if you are:

  • Constructing any new building or structure
  • Demolishing part or all of a building
  • Extension or repairing a building
  • Fire Protection
  • HVAC - New or Alterations
  • Installing new or alterations to plumbing
  • Installing solid fuel burning appliance (ie: fireplace or woodstove)
  • Installing solar panels or wind turbines
  • Making material alterations
  • Renovating or converting an existing building
  • Septic - New or Repairs
  • Sign Installation
  • Swimming pool installation 

Building Permit Exceptions


You don't need a building permit for the following:

  • Erecting a fence
  • Fixing a roof without any structural work
  • Installing eavestroughs, if drainage is contained on your property
  • Installing siding on small residential buildings
  • Painting or decorating, including interior finishes
  • Reinstalling kitchen or bathroom cupboards without plumbing
  • Replacing an existing door or window - if same size and location


Building Department Guides and Forms

Building Permit Guide
View our Building Permit Guide
Accessory Building Foundation Design
View our Accessory Building Foundation Guide
Deck Design Guide
 View our Deck Design Guide
Site Plan Example
View a Site Plan Example
Tent Permit Guide
View our Tent Permit Guide
Building Department Forms

Application to Construct or Demolish (Building Permit)

Building Permit Application Checklist

Energy Efficiency Design Summary 

Letter of Authorization (Appointing An Agent)

Sewage System Permit

Sign Permit

Swimming Pool Permit

Have a question? Submit a Building Department Inquiry Form

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