Accessory dwelling unit companies — Salem, OR | AccessoryDwellingUnit Services

Looking for accessory dwelling unit companies in Salem, OR? Call AccessoryDwellingUnit Services for a contact a provider — no obligation. Licensed adu builders serve Salem and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.

About this service

These companies provide comprehensive support for homeowners, often pairing design experts with construction crews to handle the entire project under one roof. They are helpful when you want to avoid hiring separate architects and builders. You should look into these companies when you want a streamlined experience and a single point of accountability for your backyard project from start to finish.

Frequently asked in Salem

What are the rules for ADUs in Salem?

How much does an ADU cost in Salem?

What are the disadvantages of ADUs in Oregon?

Potential disadvantages of ADUs in Oregon might include the initial investment in construction and the impact on existing yard space. You should also consider the added utility costs and how an ADU might affect your property's privacy. Consulting with experienced ADU builders can help you anticipate and address these concerns effectively, offering practical solutions.

Is an ADU allowed in Salem?

Yes, ADUs are permitted in Salem, Oregon, provided they meet the city's zoning and building code requirements. Salem has policies in place to facilitate the creation of accessory dwelling units. It's highly recommended to work with professionals who are familiar with Salem's specific ordinances to ensure your project proceeds smoothly and compliantly with all regulations.

How can I get advice on an ADU project in Salem?

What are the benefits of building an ADU in Salem?

Building an ADU in Salem offers numerous benefits, including the potential for generating rental income, providing space for family members, and increasing your property's overall market value. ADUs also offer greater housing flexibility and can contribute to a more diverse and affordable housing stock within the community. The pros can help you leverage these advantages.

Also serving nearby: Beaverton · Hillsboro · Portland · Gresham · Vancouver

All cities in Oregon →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

177,432residents

3,626per sq mile

8ZIP codes served

Serving all of Salem — population 177,432; about 3,626 residents per square mile across 48.9 sq mi. ZIP codes covered include 97301, 97302, 97303, 97304, 97305, 97306, 97308, 97309.

Neighborhoods served in Salem: North Salem, South Salem, West Salem, Downtown Salem, Hayesville — and every surrounding area.