Yakima ADU Zoning Rules & Permit Guide

ADU Regulations in Yakima, Washington

Updated September 29, 2026

Located in Yakima County in Central Washington, the city permits ADUs in low-density residential zones. Yakima requires owner occupancy and off-street parking, with site plan review for all new ADU construction.

Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Yakima as of 2026. Regulations are governed by Washington's HB 1337 (2023) which limits local ADU restrictions statewide.

Additional Local Requirements for Yakima

• ADU allowed in low-density residential zones
• Minimum 200 sq ft
• Site plan review required
• Owner must live on property

Frequently Asked Questions About ADUs in Yakima

Can I build an ADU in Yakima?

Yakima permits ADUs in low-density residential zones. Owner occupancy is a firm requirement.

What is the maximum ADU size allowed in Yakima?

ADUs in Yakima can be up to 1,000 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Yakima planning department before designing your project.

What are the setback requirements for an ADU in Yakima?

ADUs in Yakima generally require setbacks of 5 ft rear, 5 ft side. Washington's HB 1337 (2023) limits how restrictive local ADU rules can be, but the exact setback figures come from Yakima's own land use code — confirm them with the city before you design.