Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
About this service
Accessory dwelling units, or ADUs, are secondary residences that share a lot with a main house. These units allow you to increase your property value and utility without buying a new home. You need these when your household needs are changing and you need more flexible living space.
Frequently asked in Beaverton
What does accessory dwelling unit mean in Beaverton?
Do you offer 24-hour ADU services in Beaverton?
What are the best accessory dwelling unit contractors in Beaverton?
What are homes with in-law suites like in Beaverton?
What's the best accessory dwelling unit for my Beaverton property?
Are there ADU options like in Massachusetts in Beaverton?
Can I get an ADU quote for a backyard ADU in Beaverton?
Also serving nearby: Hillsboro · Portland · Vancouver · Gresham · Salem
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Beaverton — population 96,945; about 4,935 residents per square mile across 19.6 sq mi. ZIP codes covered include 97003, 97005, 97006, 97007, 97008, 97075, 97076, 97077.
Neighborhoods served in Beaverton: Raleigh Hills, Westlake, Murrayhill, Greenleaf, Downtown Beaverton — and every surrounding area.
Areas we serve
Browse by state, then city.
