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
This is the physical process of building a secondary unit, which requires coordinating contractors, electricians, and plumbers. You need professional construction services when you are ready to break ground on your design. Costs are driven by the complexity of the foundation, interior finish levels, and site grading requirements. Exact pricing confirmed free on the call.
Frequently asked in Gresham
What are the basics of ADU housing in Gresham?
ADU housing in Gresham involves adding a secondary, smaller dwelling unit to a single-family home lot. These units can be detached, like a backyard cottage, or attached to the main house. They must meet specific size and placement requirements set by the city. The goal is to provide additional housing options while maintaining neighborhood character. It's a practical solution for many homeowners.
How do I find accessory dwelling unit builders in Gresham?
What kinds of accessory dwelling unit homes are common in Gresham?
Accessory dwelling unit homes in Gresham commonly include detached backyard cottages, garage conversions, and basement or attic additions. These units are designed to be fully functional, independent living spaces. They can serve as rental units, housing for family members, or home offices. The design often complements the style of the main residence.
Is accessory dwelling unit financing available for Gresham residents?
Yes, accessory dwelling unit financing is available for Gresham residents. Many homeowners utilize home equity lines of credit (HELOCs) or construction loans for ADU projects. It's recommended to speak with your bank or a mortgage broker. They can explain the various loan products suitable for building an ADU. This makes the project more accessible.
Can I build a home with an in-law suite in Gresham?
Building a home with an in-law suite in Gresham is a common goal, and an ADU is the perfect way to achieve this. You can construct a separate unit in your backyard or convert existing space within your home. This provides a private and comfortable living area for extended family members. It offers independence while remaining close by. It's a popular multi-generational living solution.
What is the process for an ADU permit in Gresham?
What does 'accessory dwelling units ADUs' mean for Gresham homeowners?
'Accessory dwelling units ADUs' means homeowners in Gresham can add a secondary, independent living space on their property. These units are typically smaller than the main home and can be rented out or used for family. They offer a way to increase housing density and generate rental income. It's a flexible solution for property owners. It adds value and utility.
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: Downtown Gresham, Orient, Pleasant Valley, West Gresham — and every surrounding area.
Areas we serve
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