This document analyzes the causes of San Francisco's housing crisis, including high income inequality, lack of developable land due to zoning restrictions, and poor transportation. It proposes a two-part solution of increasing city revenues through taxes and fees, and spending that money on building more housing, especially affordable units, and improving public transit. Key strategies include a progressive income tax, auctioning air rights, increasing development fees, and using city-owned land to build affordable rental housing through upzoning.