California often leads in national trends. The acute affordable housing shortage in the state is the topic of this article, and plays out in the Bay Area. These examples examine all of the forces that impinge upon the feasibility of building, for lack of a better term, affordable housing. Granted, the Bay Area is an extreme example. But, the notion of denser/taller infill housing within existing single family neighborhoods is a topic on repeat in cities large and small. As home prices continue to appreciate in value, and interest rates begin to rise from historic lows, how do we provide and encourage the type of housing that is in such short supply and high demand?