Cost to build 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
Building an ADU involves costs for permits, site prep, foundation, framing, plumbing, and electrical work. Prices fluctuate based on whether you choose a custom design or a pre-planned layout, as well as the complexity of connecting to existing city utilities. Exact pricing confirmed free on the call.
Frequently asked in Beaverton
What kind of ADU housing options are available in Beaverton?
How do I get an ADU estimate in Beaverton?
What local ADU resources are there in Beaverton?
What makes an ADU 'affordable' in Beaverton?
Affordable ADUs in Beaverton are often achieved through simpler designs, efficient use of materials, and potentially converting existing structures like garages. Focusing on essential needs rather than elaborate features can also lower costs. Discussing your budget with the pros is essential.
What is the best ADU for my property in Beaverton?
What is the typical ADU cost in Beaverton?
Can I find an accessory dwelling unit contractor 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: Cedar Hills, Raleigh Hills, Progress, Bonny Slope, Downtown Beaverton — and every surrounding area.
Areas we serve
Browse by state, then city.