I would say communities like San Mateo or Belmont on the peninsula are what's in demand. Small "cute" downtowns with trendy shops and dining, but also enough parking so you can drive, surrounded by single family homes, big parks and open spaces and mixed multi-unit apartments/condos. People can have the benefits of their own property, exclusive space and enough space for a family, while enjoying a "downtown" experience when they want to.
“California is changing because of a desire of many millions of people to have something that looks like the conventional, traditional California Dream: a house on a lot in a neighborhood of similar houses on lots,”[1]
[1]https://www.wsj.com/articles/californians-flee-the-coast-to-...