Housing

HB 1345 restricts detached accessory dwelling units (ADUs) - separate small homes on the same lot as a main house - outside urban growth areas in Washington counties. It requires counties to limit each parcel to one ADU, set size limits (max 1,296 sq ft), mandate water metering and sewage capacity documentation, and require ADUs to be within 150 feet of the main home. Counties must enforce penalties for unpermitted ADUs (including $1,000 fines, removal orders, and 3-year permit bans) and track ADU permits for land-use planning updates. The bill applies only to counties allowing such ADUs outside urban areas, not affecting existing urban or rural ADU rules.

HB 2451 modifies Washington State's tax increment financing (TIF) rules to help local governments fund public improvements. It allows cities, counties, and other local jurisdictions to use increased property tax revenue from designated "increment areas" (geographic zones where property values rise after designation) to pay for eligible projects like roads, water systems, affordable housing, and park facilities. The bill sets limits: an increment area cannot exceed $200 million in assessed value (adjusted annually by the consumer price index) or 20% of a jurisdiction's total assessed value, whichever is smaller. It clarifies which costs qualify, including infrastructure, affordable housing development, and administrative expenses directly tied to TIF implementation. This bill directly affects local governments seeking to finance public projects through targeted tax revenue growth within specific zones.