The bill aims to enhance the availability of baby diaper changing stations in public buildings in Washington State. It mandates that any public building with a required restroom must provide a changing station in at least one restroom accessible to women and one accessible to men, or in a gender-neutral restroom. If multiple restrooms exist, those without a changing station must display clear signage indicating the location of the nearest station. The requirements apply to new public buildings and existing ones undergoing renovations costing $10,000 or more, with exceptions for cases where installation is deemed infeasible 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 will be classified as a class 2 civil infraction. Definitions are provided for key terms such as "baby diaper changing station," "gender-neutral restroom," and "public building," clarifying the scope and intent of the legislation.