Expanding urban growth area boundaries for residential development.

HB 1164 requires Washington cities and counties to expand urban growth area (UGA) boundaries to include land adjacent to existing residential areas with access to urban services, enabling more residential development. Specifically, it mandates adding parcels sharing boundaries with residential land or located across roads from such areas, while allowing cities to maintain existing density and service connections. The bill excludes protected natural areas (like critical aquifers), agricultural lands, and designated resource zones from expansion. This policy aims to increase housing supply near existing infrastructure without raising local government costs, directly affecting land-use planning in participating municipalities.