Concerning middle housing in unincorporated areas.

HB 2269 allows counties to permit "middle housing" (like duplexes or small apartment buildings) on properties currently zoned for single-family homes in two specific areas: limited intensive rural development zones and designated urban growth areas. It requires counties to limit these projects to four units per lot and apply the same development standards (like setbacks and environmental rules) as single-family homes, without adding extra restrictions. The bill also mandates that middle housing in rural areas use public sewers or large on-site systems, while urban areas must have public water and sewer service. This policy directly affects property owners and developers in unincorporated Washington counties seeking to build more housing options.