Watch · 52-second walkthrough
How the ADU Checker works: can you build an ADU in your Ontario backyard?
A 52-second walkthrough of the ModularHomes400 ADU Checker — enter your address and see what your lot allows for a backyard suite (garden suite / ADU), based on your municipality’s actual by-laws.
What you’ll see in the video
- Enter any Ontario address — no sign-up, no waiting.
- Get a straight answer on whether a backyard suite (ADU) is allowed on your lot.
- See the maximum size your municipality’s by-laws permit.
- Understand the real gates — zoning, servicing, setbacks — in plain language.