High way 4 widening will be completed in a few years all the way to Brentwood
http://widensr4.org/
http://www.mercurynews.com/breaking-news/ci_19821743
Bart will be extended to Antioch by 2016. Driving to Antioch bart station is about 15 minutes from brentwood. Similar time to drive to Fremont, Union City Bart stations from Fremont.
http://bart.gov/about/projects/ecc/
- Demographic
http://www.nytimes.com/2011/04/10/us/10bcshort.html?_r=1