ADUs are becoming increasingly more common. An ADU is a home in its own right, with its own kitchen, bathroom, electrical and plumbing, so it deserves its own inspection.
We inspect the ADU the same way we inspect a house and report on it alongside the main home when you book both together.
What we look at
- Foundation, framing, roof and exterior of the unit
- Electrical supply, panel or sub-panel and wiring
- Water supply, drains and water heater
- Heating, cooling and ventilation
- Kitchen, bathroom, windows, doors and egress
Who it’s for
Buyers of properties with an ADU, and owners who rent one out.
Where it’s available
Across all of TRUELINE’s service areas, including Sherwood, Portland, Beaverton, Hillsboro, Tigard and Tualatin.
Accessory Dwelling Unit Inspection: Questions
What does an ADU inspection cost?
It costs less when it is booked together with the inspection of the main home. Both prices are listed on our pricing page.
Does the inspection confirm the ADU was permitted?
A home inspection looks at condition, not permit history. Ask the seller for permits or check with the city or county building department.
Ready to book your inspection?
Pick a time online or give us a call.

