This rent cap goes into effect on January 1, 2027.

As required by Chapter 209, Laws of 2025 (Engrossed House Bill 1217), the Department of Commerce published a maximum annual rent increase percentage allowed for rental units that are subject to the Residential Landlord Tenant Law (RCW 59.18) for calendar year 2027 on the Department’s website at the Landlord Resource Center.

The maximum annual rent increase percentage allowed between January 1, 2027, and December 31, 2027, is 10%.

The maximum annual rent increase percentage will be published each year shortly after the mid-July release of June data by the federal U.S. Bureau of Labor Statistics. Please contact Commerce’s Housing Policy team with any questions at [email protected].