Market resolves to YES if the Nationwide House Price Index annual percentage change for August 2026 is strictly above 2.5%. Nationwide reported 1.8% annual growth for July 2026 (down from 2.2% in June). A reading of exactly 2.5% resolves NO. Resolution uses the annual change figure in Nationwide's official August 2026 HPI release. Source: nationwide.co.uk/media/hpi.