

HB 1110 and Middle Housing in King County What It Means for Zoning Infill Lots and ADUs
HB 1110 is Washington’s middle housing law. It requires certain cities to allow a wider range of housing types in residential zones that historically allowed only one detached home per lot.
The key idea is simple. A city cannot keep large areas of residential land reserved only for single detached houses if the law applies to that city. Instead, local zoning must allow a minimum number of housing units per lot, based on city size and location.
For larger cities, includi
12 hours ago10 min read






