Accessory dwelling unit for rent — Seattle, WA

Last updated: September 24, 2026

What affects the price

Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

Turning an ADU into a rental involves prepping the space to be a functional, independent living area for tenants. You need this service if you want to generate supplemental monthly income from your property. Costs fluctuate based on the finish level, utility hookups, and local requirements for rental safety. We help you navigate the process of making your unit move-in ready. Exact pricing confirmed free on the call.

Frequently asked in Seattle

Also serving nearby: Kirkland · Bellevue · Renton · Kent · Federal Way

All cities in Washington →

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

Service area details

Serving all of Seattle — population 755,078; about 8,989 residents per square mile across 84.0 sq mi. ZIP codes covered include 98101, 98102, 98103, 98104, 98105, 98106, 98107, 98108.

Neighborhoods served in Seattle: Ballard, Columbia City, Fremont, Queen Anne, Green Lake, Capitol Hill — and every surrounding area.