Hayward Hills is indeed nice. If you're in the 1% of millenial earners you can stretch and pay close to a million dollars to live in a 2200 sq ft home within spitting distance of the most dangerous fault in America. Or cross 880 to the west and save a little money, but you're in a liquefaction zone now.
Sorry this is a bit off topic & earthquake risk is everywhere in the bay. But this morning I'm a salty house-hunter.