Thinking About Adding a Second Suite in Barrie? Here’s What You Need to Know
If you’re considering turning your basement or adding a coach house into a second suite in Barrie, it can be a smart way to boost income, support family, or increase long-term property value. But skipping the rules can create serious compliance and financial risk. Below is a practical overview of how second suites work in Barrie and what is required to do it properly.*
What Is a Second Suite (or ARU)?
- A second suite is a self-contained residential unit with its own kitchen, bathroom, and entrance, separate from the main dwelling.
- The unit may be internal, attached, or detached, such as a basement apartment, addition, coach house, or garden suite.
- Second suites are permitted in designated residential zones, subject to zoning and building standards.
Why Registration Is Mandatory
- All second suites and detached accessory dwellings must be registered with the City.
- Registration ensures Fire, Building, and Emergency Services are aware of the unit for safety and response purposes.
- Operating an unregistered suite can result in enforcement action, fines, or an order to cease occupancy.
What the Registration Process Looks Like
- Application – Submit a registration application including floor plans and site details.
- Inspections – The City conducts building, fire, and property standards inspections.
- Corrections – Any deficiencies must be addressed and re-inspected.
- Registration – Once all requirements are met, the suite is registered.
Key Zoning and Building Requirements
- One suite per lot is permitted.
- Size limits apply, generally capped at 45 percent of the principal dwelling’s gross floor area, with limited exceptions.
- Parking requirements typically include one space per unit.
- Detached units must meet setback, height, lot coverage, and servicing standards.
Safety and Code Compliance
- Suites must comply with the Ontario Building Code, Ontario Fire Code, and local property standards.
- This includes proper egress, fire separations, interconnected smoke alarms, and life-safety measures.
- Detached units must be fully serviced by municipal water and sewer.
Recent Changes to Be Aware Of
- As of 2024, suites are automatically registered once all inspections are passed.
- The City has clarified how suite size is calculated and how habitable space is defined.
- Updated rules apply to detached units regarding height, privacy, and rear-yard setbacks.
Why Legalising a Suite Is the Smarter Play
- Risk control: Avoid enforcement, fines, and forced vacancy.
- Safety: Inspected units protect occupants and owners.
- Value: Registered suites can improve financing options and resale appeal.
- Housing supply: Legal ARUs contribute to Barrie’s housing goals.
* Source: City of Barrie – Additional Residential Units, Second Suite Registration By-law, Zoning By-law, and Building Services guidance.
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