HST rebates may apply on a new modular home

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.
Check your address →Explore the modular home guides →