Months of Supply Inventory (MSI) quantifies the supply/demand relationship by measuring how many months it would take for all current homes listed on the market to sell at the current rate of sales. The long-term average MSI is around three months in California, which indicates a balanced market. An MSI lower than three indicates that there are more buyers than sellers on the market (meaning it’s a sellers’ market), while a higher MSI indicates there are more sellers than buyers (meaning it’s a buyers’ market). The Bay Area markets tend to favor sellers, which is reflected in their low MSIs. San Francisco MSI is notable for its variability over the past year, oscillating from buyers’ to sellers’ markets twice over the course of 12 months. Currently, MSI is below three months of supply (a sellers’ market) in every Bay Area county, except for single-family homes in Napa and condos in Marin, Napa, and San Francisco, which are now balanced.

 

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