Franklin County, WA Home Business: Zoning & Home Occupation Permits (2026)

010. The business must be clearly subordinate to the residential use of the property, cannot involve modifying the property or the exterior of its structures to look like anything other than a residence, and has to be performed entirely within a permanent structure on the premises, not in a yard, carport or temporary shelter. It must be conducted solely by people who reside in the dwelling, and beyond articles actually produced there, no merchandise, products or wares may be displayed or offered for sale on-site.

020 separately bars an entire category of occupations outright regardless of these standards: vehicle repair and maintenance, rebuilding motors, painting vehicles, welding, sheet metal shops, upholstering, firewood cutting, and any Group H hazardous occupancy under the county's adopted Uniform Building and Fire Code. The floor-area cap is explicit: a home occupation cannot occupy more than 20 percent of the residence's gross floor area, though an entire attached or detached garage may be used instead, up to a 600-square-foot cap on the area utilized. 060.