Legal Basement Apartment Richmond Hill, York Region

Additional Residential Units in Richmond Hill

Richmond Hill is a city of more than 200,000 people, and many households here live with several generations under one roof. An additional residential unit in the basement gives a parent, an adult child or a tenant their own space, legally.

What the City requires

The City of Richmond Hill permits additional residential units subject to zoning requirements and a building permit. We check zoning for your lot, prepare drawings for the City's online application and plan the build around the inspections.

Large homes, careful layouts

In big early-1990s houses in Bayview Hill, or newer homes in Jefferson and Westbrook, the space is usually there. The work is in the details: a separate entrance that suits the lot, a fire-separated ceiling, a second means of egress and a sensible split of heating and ventilation.

Family suite or rental

Whether the unit is for family or for rent, the code requirements are the same. Building it legally now means fewer surprises with insurance or when you sell, and safer space for whoever lives there.

Sources: City of Richmond Hill: Building permits · City of Richmond Hill: Additional residential units · Ontario: Add a second unit in your house. General information, checked October 2026; confirm with the municipality before you start.

Questions from Richmond Hill homeowners

Are basement apartments allowed in Richmond Hill?

Yes. Additional residential units are permitted, subject to zoning requirements and a building permit.

Can I apply for the permit online?

The City of Richmond Hill accepts residential permit applications online. We prepare and submit it for you.

Who does plumbing and electrical?

Our licensed partner contractors, coordinated by us.

Also in Richmond Hill: Basement Finishing in Richmond Hill · Bathroom Renovation in Richmond Hill. Legal Basement Apartment elsewhere: Newmarket · Aurora · East Gwillimbury. More: Legal Basement Apartment · Richmond Hill area guide · Our work · FAQ.