Prefabricated accessory dwelling unit — Beaverton, OR
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
A prefab ADU is built in a factory and then transported to your property for final assembly. These units are often faster to build than traditional construction because the work happens in a controlled environment. If you want to minimize noise and debris on your property or need a quicker turnaround for your backyard space, this is a great option.
Frequently asked in Beaverton
What ADU services are offered in Beaverton?
What does accessory dwelling unit mean in Beaverton?
What are homes with mother-in-law suites like in Beaverton?
What are homes with in-law suites like in Beaverton?
What's the accessory dwelling unit construction process in Beaverton?
Accessory dwelling unit construction in Beaverton begins with design and obtaining permits. The crew then prepares the site and builds the foundation. Framing, roofing, and exterior finishes follow. Interior work, including plumbing and electrical, is completed next. A final inspection ensures code compliance.
What about emergency ADU options in Beaverton?
What are accessory dwelling unit companies 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: Murrayhill, Cooper Mountain, Sylvan Heights, Downtown Beaverton, Progress — and every surrounding area.
Areas we serve
Browse by state, then city.