During that same decade, the population of SF grew by about 60,000. 25K net new units in a city with 60K net new residents (and one of the lowest percentages of children in the country) is effectively no growth in housing stock.
Additionally, a lot of those 25K units are not market-rate housing (they're for low-income) which means that for market-rate housing, the numbers would look even worse since most of the new residents are not eligible for low-income housing.
Additionally, a lot of those 25K units are not market-rate housing (they're for low-income) which means that for market-rate housing, the numbers would look even worse since most of the new residents are not eligible for low-income housing.