This is one example but there

[The-Shoveler]

This is one example but there are many smaller (but still fairly large housing and planned communities) happening all along the I-15 corridor in IE and San Diego county.

http://www.latimes.com/business/realestate/la-fi-property-report-ontario-20141106-story.html

They all start out as bedroom communities then they evolve into Cities, just they way it has been for 75 or more years now.

Here is another in SD

http://www.sandiegouniontribune.com/news/2015/jan/26/development-north-county-merriam-newland/