State Sets Rent Cap for 2026 at 9.683%
Beginning January 1, 2026, rental housing providers across Washington will be required to abide by a maximum rent increase percentage of 9.683%, as set by the state’s Department of Commerce under HB 1217. This adjustment reflects the latest Seattle-area Consumer Price Index (CPI) and supersedes the prior limit of 10.0%, which remains in effect through December 31, 2025.
What You Need to Know
Why this specific number?
HB 1217 mandates that annual rent limits mirror Seattle-area CPI trends. For the 2026 calendar year, the CPI-supported cap comes in at 9.683%, aligning with inflation measures from the previous 12-month period.
How long does it apply?
- Through December 31, 2025: rental housing providers may increase rent by up to 10.0%.
- January 1 – December 31, 2026: rent increases are capped at 9.683%.
Where can I find more details?
You will find all of the information about how the Department of Commerce determined this number, including CPI data and methodology, on its Landlord Resource Center: Washington Department of Commerce Landlord Resource Center
RHAWA will continue to update legal forms, education, and other resources as information on compliance with new laws continues to evolve.