Legal Basement Apartment Requirements Ontario 2024

This article covers the 2024 requirements for legal basement apartments in Ontario. For the most current 2026 requirements, please see our updated 2026 guide.

2024 Requirements Overview

The fundamental requirements for legal basement apartments in Ontario include minimum ceiling height (1.95m), fire separation (45-minute rating), egress windows, smoke and CO alarms, and a complete kitchen and bathroom. The 2023-2024 provincial changes expanded permissions for secondary suites province-wide.

For the latest requirements and to start your project, visit our basement apartment permit service page or call 416-558-9607.