The bill introduces a new requirement for public buildings in Washington State to provide baby diaper changing stations in restrooms. Specifically, it mandates that any public building with a public restroom must have a changing station in at least one restroom accessible to women and one accessible to men, or in a gender-neutral restroom. If there are multiple restrooms, those without a changing station must display clear signage indicating the location of the nearest station. This requirement applies to newly constructed public buildings and existing ones undergoing significant renovations costing $15,000 or more, unless local authorities deem installation infeasible or it conflicts with accessibility standards.

Additionally, the bill outlines penalties for non-compliance, starting with a warning letter for first violations. Subsequent violations can result in a class 2 civil infraction. However, if a changing station is removed in accordance with the standards set by the manufacturer, no penalty will be imposed. The bill also defines key terms such as "baby diaper changing station," "gender-neutral restroom," and "public building," clarifying the scope of the legislation.