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detached garage with flowering bush next to it

A detached garage is often constructed on a property to provide additional storage for vehicles, seasonal equipment, tools or various other items. Like all construction, regulations apply to ensure that the proposed structure is safe, and will last a long time.

Here is what you need to know before you begin:

 Building Permits

All detached garages constructed within the Town of Tillsonburg require a building permit prior to construction. 


A complete Building Permit Application requires the following:

  • A complete building permit application form 
  • Two (2) copies of a plot plan / survey showing your deck location
  • Two (2) copies of your deck plans drawn to scale
  • A lot grading plan may be required
 Zoning By-Law

Detached garages, regardless of size, must comply with the provisions of the Town of Tillsonburg zoning bylaw.


These requirements include:

  • The location of the proposed building. A detached garage may be located in the side, or rear yard but not in the required front yard
  • Setbacks from property lines (generally a minimum of 4 ft)
  • The size of the building may be limited depending on the percentage of lot coverage permitted (contact Tillsonburg Building Services to confirm what your property zoning allows for size).

A survey of your property is typically required in order to determine the above setback requirements. If you do not have a copy of your survey, contact the Building Department to see if there is one on file.

 Ontario Building Code

The Building Code states that any structure with an area greater than 10 m² (108 ft²) requires a building permit.


Download "Doing it Right Guide - Garages" (PDF)