CPA · Houses with a Secondary Suite
Code References
1.4.1.2 Defined Terms
residential occupancy that contains only one other dwelling unit and common spaces, and where both dwelling
units constitute a single real estate entity. (See Note A-1.4.1.2.(1).)
Note A-1.4.1.2.(1) Defined Terms.
Secondary Suite
A secondary suite is a self-contained dwelling unit that is part of a house containing not more than two
dwelling units (including the secondary suite) and any common spaces such as common storage, common
service rooms, common laundry facilities or common areas used for egress. Secondary suites are typically
created within an existing single dwelling unit-commonly called a "house"- either constructed as an addition
to an existing house or incorporated during the construction of a new house. A secondary suite may have more
than one storey and may be on the same level as the principal dwelling unit of the house or be above or below
it.
Examples of buildings where secondary suites are permitted include individual detached houses, or where the
secondary suite is located in a portion of a building, semi-detached houses (half of a double) and freehold row
houses.
Where a building has multiple occupancies, the secondary suite can only be created in a portion of the building
that is of residential occupancy. Apartment buildings have more than two dwelling units and are therefore not
permitted to have secondary suites.
A secondary suite is only permitted where approved by the local authority, in accordance with municipal land
use bylaws.