What Is a Backyard ADU and Do I Need a Permit in BC?
An accessory dwelling unit (ADU) is a self-contained living space on the same lot as a primary residence. In BC, that includes secondary suites, laneway homes, and backyard structures with a kitchen, bath, and sleeping area.
Do I need a permit?
In nearly every BC municipality, yes. Even when local zoning explicitly permits an ADU, a building permit is almost always required because the unit is a permanent structure with electrical, plumbing, and mechanical systems.
What the BC Housing Statutes Amendment Act changed
Bill 44 expanded by-right ADU rights across most BC municipalities. In practice, this means most single-family lots now allow at least one accessory dwelling unit — though local zoning and design controls still apply.
Where prefab fits in
A prefab unit like an aux box doesn't change permitting requirements, but it does dramatically compress the construction timeline on your property. Most of the build happens off-site, which means less disruption and a tighter on-site schedule.
If you're unsure whether your property qualifies, our team does free Discovery Calls to walk through exactly what your municipality will require.