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Months of Inventory for Existing Homes Washington

Current supply versus 12-month sales average – All Properties
September 2026
4.4
Expected range of 3.6–4.0
Month-over-month
+1%
Typical change is about +4%
Year-over-year
+21%
View source and notes...

Last update: Oct. 7, 2026, midnight Source: IAR MLS Data Warehouse Data notes: Months of inventory is calculated as the current month's supply ÷ the average sales per month over the previous 12 months. Expected values were refit in August 2026 and now align to the month they describe.