The bill amends RCW 59.18.060 to enhance rental property disclosures regarding flooding history and flood risk. It requires landlords to inform tenants if the property is located in a special flood hazard area or an area at potential risk of flooding. Additionally, landlords must disclose that their insurance does not cover tenants' personal possessions, encouraging tenants to consider purchasing renter's and flood insurance. This disclosure requirement applies only to leases entered into after December 31, 2026.

Furthermore, the bill mandates that landlords provide tenants with information about health hazards associated with indoor mold and how to control mold growth. It also includes provisions for landlords to be immune from civil liability for failure to comply with the new disclosure requirements unless there is intentional non-compliance. The bill aims to improve tenant awareness of potential risks associated with their rental properties, particularly concerning flooding and mold.