The bill introduces a new requirement for public buildings in Washington State to provide baby diaper changing stations in at least one restroom accessible to women and one accessible to men, or in a gender-neutral restroom. This requirement applies to any public building constructed after the bill's effective date and to existing buildings undergoing renovations costing $15,000 or more. However, exceptions are made for buildings where the installation is deemed infeasible by local authorities or for restrooms in health care facilities intended for single patient use.

To enforce compliance, the bill stipulates that a first violation will result in a warning letter from the city or county attorney, while subsequent violations may lead to a class 2 civil infraction. Additionally, building owners may remove diaper changing stations if they are not used according to the manufacturer's standards. Definitions for key terms such as "baby diaper changing station," "gender-neutral restroom," and "public building" are also provided to clarify the scope of the legislation.