A secondary suite is a specific type of dwelling unit. It is an additional dwelling within a building with all of the following characteristics
- Total floor space of not more that 90 m2 (968 ft2)
- Maximum of 40% of the total habitable floor space of the building.
- Located in a residential building with only one other dwelling unit.
- Located in a building that is a single real estate entity. A secondary suite cannot be strata titled.
- The property use must include an owner who is a resident of the main dwelling unit or the suite.
If a suite satisfies these characteristics, its construction is regulated by the secondary suites provisions found in Section 9.36 of the BC Building Code. A summary of these provisions is provided further down in this bulletin.
It is important to note that a suite is secondary to the principal use of a dwelling. That means it cannot be detached from the home. It also cannot be a single storey addition or wing. Secondary suites are most commonly on the basement or ground level of the home.