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
In San Diego, an ADU contractor understands the specific coastal commission rules, fire safety codes, and local density incentives that apply to your property. Because regulations here are quite specific, you need a contractor who is experienced with local planning departments to avoid delays. Whether you are adding a unit in a hilly area or a flat lot, a local pro helps ensure your project stays compliant with all regional requirements from day one.
Frequently asked in Gresham
What is the cost of an accessory dwelling unit permit in Gresham?
What are the benefits of a prefabricated ADU in Gresham?
What is involved in ADU construction in Gresham?
Where can I find the best ADU for my property in Gresham?
Can I get an ADU quote in Gresham?
What accessory dwelling unit grants are available in Gresham?
Which accessory dwelling unit companies are reputable in Gresham?
Also serving nearby: Portland · Vancouver · Beaverton · Hillsboro · Salem
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Gresham — population 110,685; about 4,706 residents per square mile across 23.5 sq mi. ZIP codes covered include 97030, 97080.
Neighborhoods served in Gresham: Meadowland, Oaks, West Gresham, North Gresham, Clear Creek — and every surrounding area.
Areas we serve
Browse by state, then city.
