“Months’ Supply of Inventory,” or MSI, shows the theoretical number of months needed to “absorb” available homes for sale in a given month based on the number of homes going into contract in a given month. The shorter the time period, the stronger the market for sellers, leading to upward pricing pressure. Longer time periods indicate slower absorption and a buyers’ market.
The chart below illustrates the dramatic difference in MSI for homes up to the median price ($1.3 million for houses, $1.1 million for condos) and in the next price segment higher, versus the luxury home segment, defined here as houses selling for $2,000,000+ and condos for $1,500,000+. (By this definition, luxury sales currently make up about 20% of San Francisco’s home sales.) ...