Say goodbye to backyards.
Ha.
About 15 years ago, we visited California. Stayed with some friends who lived in Hayward, in the East Bay. House was worth over a half-million.
Their "back yard" was about 40 square feet. They had a fence around it. It was in shadow almost all the time, either from their house or from the neighboring house, the facing wall of which was about ten feet away.