Accessory dwelling unit construction cost — 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
The cost to build an ADU varies based on whether you are converting an existing garage or building a new detached structure from the ground up. Factors like foundation work, utility extensions, high-end finishes, and site access all influence the final total. Exact pricing confirmed free on the call.
Frequently asked in Beaverton
What is the cost of an accessory dwelling unit in Beaverton?
What kind of ADU housing is common in Beaverton?
Are there accessory dwelling unit grants available in Beaverton?
What is the accessory dwelling unit cost for a project in Beaverton?
Where can I find local ADU resources in Beaverton?
What are the accessory dwelling unit permit requirements in Beaverton?
What ADU services are offered in Beaverton?
ADU services in Beaverton encompass the entire process of creating an accessory dwelling unit, from initial design consultations and site assessments to navigating permits and managing construction. Whether you're considering a garage conversion, a basement unit, or a new backyard cottage, these services provide expert guidance. They ensure your ADU complies with Beaverton's building codes and zoning laws. The aim is a functional and legally sound addition to your property.
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, Sylvan Highlands, Cooper Mountain, Westlake, Raleigh Hills — and every surrounding area.
Areas we serve
Browse by state, then city.