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| 1991–1997 || Over this period, BART constructs the Dublin/Pleasanton and Pittsburg extensions, opening the stations of Castro Valley and (East) Dublin/Pleasanton on the former and the stations of North Concord/Martinez and Pittsburg/Bay Point on the latter.
| 2004–2012 (preparation starts in 2001) || BART extends cellular connectivity throughout the underground portion of the BART system.
| 2009–present || BART extends service south of Fremont, with the ultimate goal of going all the way to San Jose. Multiple delays in financing, construction, and technical aspects of operations delay the opening of Warm Springs/South Fremont to March 2017.