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). MSI fell below three months in the first quarter this year and remained fairly stable from March to August. MSI jumped from August to November in Los Angeles, Riverside, and San Diego, indicating the market is more balanced for single-family homes, while Orange County MSI fell, implying that market still favors sellers.
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