A second unit is a separate living space in a house that contains cooking, eating, living, sleeping and sanitary facilities used only by the unit's occupants.

Second units are also known as:
  • Basement apartments
  • Secondary suites
  • Accessory apartments

Do you own or plan to build a Second Unit?

Here's what you need to know:
  • The City will now require that houses containing a second unit be registered prior to being used as two-unit homes
  • The one-time registration is free of charge
  • Houses containing second units must comply with the Ontario Building Code, Ontario Fire Code and Zoning By-law
  • The new By-law includes specifications for both existing and new second units

Registered Second Units