With a price to rent ratio of 53, San Francisco has the least profitable rent in the country.
https://smartasset.com/mortgage/price-to-rent-ratio-50-large...
https://smartasset.com/mortgage/price-to-rent-ratio-50-large...
They've made more money from appreciation than from rising rents.
Appreciation, by itself, will naturally drive this ratio down because of rent control laws. The value of the home is the denominator in that fraction.