Rent versus buy is a function of how long you plan to stay in the property. If you know you're going to live in San Francisco for the rest of your life, buy as

Rent versus buy is a function of how long you plan to stay in the property. If you know you're going to live in San Francisco for the rest of your life, buy as soon as you can and rent out any rooms needed to make it possible. If you plan to follow opportunity where it leads, you'll never want to buy.