Mid-to-high end "suburbia" with minimal town house or apartment development. Mostly planned communities with HOAs that prevent ugly sprawl.<quoted text>
California's always the confounding data point. It amazes me that water hasn't choked their growth completely. When I lived out there Temecula was just starting to develop in earnest. I imagine its wall to wall suburbia in the inland valley nowadays.
Temecula is really too far from either the LA basin or San Diego to be a true suburb. Still lots of open land beginning with the wineries and beyond. Really a very nice place.