Planning for the Warm Springs extension around 1994; by 1998, BART estimated it would cost $550 million, with 7,800 daily riders by 2010.
[4] BART held a ceremonial groundbreaking for the Warm Springs Extension in September 2009, with completion then expected in 2014.
[10][11] The yet-to-open station was fully staffed beginning in September 2016 because BART union positions are only reassigned twice per year.
[17] The remaining route was discontinued upon the June 13, 2020 opening of the first phase of the Silicon Valley BART extension (after which Warm Springs/South Fremont station was no longer the southern terminal of East Bay BART service) leaving only AC Transit buses serving the station.
In 2011, UP purchased 160 acres (65 ha) of land adjacent to the former NUMMI plant across the parallel tracks from the under-construction station, intending to build a rail yard.
The bridge, then planned for completion in 2018, would provide access from the new developments and the adjacent Tesla Factory, which had no convenient pedestrian route to the station because of the rail lines.
[28][29][30] As of 2024[update], BART anticipates soliciting a developer between 2029 and 2033 for TOD to replace surface parking lots at the station.