Adu 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
An ADU unit is a secondary housing structure located on the same lot as a primary home. Whether you need a home office, a gym, or a guest house, an ADU adds functional square footage to your land. You need this when you run out of space inside your main house but don't want to move.
Frequently asked in Beaverton
What services do accessory dwelling unit contractors offer in Beaverton?
Accessory dwelling unit contractors in Beaverton offer comprehensive services for adding ADUs to your property. This includes initial design consultations, site evaluations, and navigating the permitting process with the city of Beaverton. They manage all aspects of construction, from foundation and framing to plumbing, electrical, and finishing touches. Their goal is to deliver a fully functional and code-compliant ADU for homeowners.
What is the average ADU cost in Beaverton?
What does accessory dwelling unit construction involve?
Accessory dwelling unit construction involves several phases, beginning with site assessment and design in Beaverton. After plans are approved and permits secured, the building process starts with site preparation and foundation laying. Framing, roofing, and exterior work follow, then interior systems like plumbing and electrical are installed. Finally, finishes are applied, making the ADU ready for occupancy. The pros manage all these steps efficiently.
What is a detached accessory dwelling unit?
A detached accessory dwelling unit (DADU) is a standalone housing unit located on the same property as a primary residence but separate from it. In Beaverton, this could be a backyard cottage, a garage apartment, or a small house built on stilts. DADUs offer maximum privacy and independence for occupants. The pros can help you design and build a DADU that fits your property and meets local zoning requirements.
What does an ADU builder do?
An ADU builder is a professional who specializes in designing and constructing accessory dwelling units. They are responsible for ensuring the ADU meets all local building codes, zoning laws, and safety standards. This includes managing the entire construction process, from initial planning and obtaining permits to the final completion of the unit. They work closely with homeowners to bring their ADU vision to life.
What are the costs of an accessory dwelling unit?
Where can I find local ADU services 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, Sellers Addition, Aloha, Tigard, Bethany — and every surrounding area.
Areas we serve
Browse by state, then city.