I mean 3000+ square feet starting at 500K. McMansions I believe they are called. Almost all new tract homes in the state start at 500K and go up to 1 million, often in the same tract. My point being is that there are really no entry level homes being built anywhere in California.
A McMansion is an entry level home for multiple Mexican families. Many smaller communities in the Central Valley have banned the practice of multiple family occupancy in a single residence to preserver their community's tax base. That ban has been imposed on developers, not buyers.