Cost to build accessory dwelling unit — Yakima, WA
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.
About this service
When calculating the budget for a secondary unit, consider the costs for architectural design, permits, materials, and labor. Custom designs and high-end interior finishes will push your budget higher, while standardized layouts can keep costs more predictable. Exact pricing confirmed free on the call.
Frequently asked in Yakima
What are the accessory dwelling unit permit requirements in Yakima?
What is an ADU permit, and why is it important in Yakima?
What defines an ADU unit in Yakima?
Can I build homes with in-law suites in Yakima?
What are the options for an accessory dwelling unit for rent in Yakima?
What accessory dwelling unit financing options are available in Yakima?
Are prefabricated accessory dwelling units a good choice for Yakima?
Also serving nearby: Kent · Renton · Federal Way · Bellevue · Tacoma
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Yakima — population 96,750; about 3,472 residents per square mile across 27.9 sq mi. ZIP codes covered include 98901, 98902, 98903, 98904, 98907, 98908, 98909.
Neighborhoods served in Yakima: Downtown Yakima, Yakima West Valley, Yakima Northwest, Yakima Southeast, Yakima Southwest — and every surrounding area.
Areas we serve
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