Adu unit — Gresham, 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 Gresham
What do Gresham residents ask most about local ADUs?
What goes into the cost of an accessory dwelling unit in Gresham?
Can I put a backyard accessory dwelling unit in Gresham?
What are the options for ADU housing in Gresham?
What does 'accessory dwelling unit' mean in Gresham?
In Gresham, an accessory dwelling unit (ADU) refers to a secondary, independent living space on a single-family residential lot. It can be attached to the main house, like a basement apartment, or be a separate structure in the backyard. ADUs offer flexibility for multi-generational living or rental income. They are designed to be fully self-contained living quarters.
How do I find an ADU builder in Gresham?
What are the benefits of accessory dwelling unit homes in Gresham?
Accessory dwelling unit homes in Gresham offer several benefits, including increased housing flexibility and potential rental income. They can accommodate aging family members or provide housing for adult children. ADUs can also increase your property's value. They offer a cost-effective way to add living space compared to other renovation projects.
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: Glenfair, Hollydale, Lents, North Gresham, West Gresham — and every surrounding area.
Areas we serve
Browse by state, then city.