The largely racist legacy of single-family zoning took a blow this week when Berkeley's city council voted unanimously to make moves to change its general plan. In housing-starved San Francisco, we are decades late in facing the fact that we live in a city that was developed half as a suburb.

In the history of San Francisco real estate, the lows never drop too low or last too long. Will this time be different?

Three months free rent? No problem. Free Peloton bike? Totally on the table. Prospective tenants are getting all kinds of concessions as SF rents fall 20-percent year over year.

It's beginning to be more of a buyer's market in San Francisco than it has been in over a decade as the number of homes for sale last week reached levels unseen since 2011. And this means that more and more sellers are having to cut their asking prices to garner interest and remain competitive.

Some land on Potrero Hill with an uninhabitable shack on it has just sold for well under its initial asking price of $2.5 million.