Building and Renovating

Our Building Department is happy to help you with your building needs including issuing of building permits, providing inspections for renovations and new construction, accepting and reviewing zoning applications and so on.

Call Before You Dig

The Town of St. Marys is enrolled in the Ontario One Call system.

Whether you’re building a fence, putting in a pool, or planting a tree or garden, you need to contact Ontario One Call at least 5 days before you dig. Ontario One Call will notify underground infrastructure owners that you plan to dig; locators from each underground infrastructure owner will then come to your property to locate buried lines and cables. You can then dig safely by respecting the locator marks and following the instructions provided. 

You can request locates online through Ontario One Call's website or by phone at 1-800-400-2255. You can also contact the Town for more information at locates@town.stmarys.on.ca. 

Business Resources

Building information specific to doing business in St. Marys can be found under Business Applications, Licenses and Permits as well as Planning and Development.

External Links

• Ministry of Municipal Affairs and Housing
• Ontario Building Code (E-Laws)
• Upper Thames River Conservation Authority
• Upper Thames River Conservation Authority Interactive Web Map

Fully accessible versions of all above documents are available in print upon request.