As of September 2021, the Province of Ontario has not yet established a comprehensive province-wide regulation for Accessory Dwelling Units (ADUs). However, municipalities in Ontario have the authority to regulate ADUs within their jurisdiction.
The regulations for ADUs can vary depending on the municipality, and some may have strict guidelines for things such as the size and location of the ADU, the number of parking spaces required, and the permit process.
In Toronto, for example, ADUs are allowed in single-family homes, but there are regulations on the size of the unit, parking requirements, and other requirements related to the building’s health and safety.
It is important to check with your local municipality’s planning department to understand the specific regulations and requirements for building an ADU in your area.