News 2027 Maximum Annual Rent Increase July 16, 2026 Posted by admin 16 Jul The maximum annual rent increase percentage allowed for properties subject to Residential Landlord Tenant Act (RCW 59.18) unless specifically exempted as defined in RCW 59.18.700 between 1/1/2027 and 12/31/2027 is 10%.The maximum annual rent increase percentage allowed for each calendar year will be published shortly after release of the June data by the federal U.S. Bureau of Labor Statistics, which is typically in early July of each year.The Rent Cap is published by the Washington State Department of Commerce. For additional information, please see the following link: HB 1217 Landlord Resource Center – Washington State Department of Commerce