During the winter and spring of 2009, the stadium's natural grass playing field was removed and replaced with FieldTurf, a new generation of artificial turf with a crumb rubber and sand infill.

The most recent additions came in the 1980s when the capacity of the stadium was expanded from approximately 18,000 to just over 31,000 by adding end zone bleachers, an upper deck and boxes on the west side.

In 1998, the field was widened and other renovations were carried out for the San Jose Earthquakes soccer team in accordance with official FIFA regulations.

The new facility, to have 22,000 permanent seats but be expandable to a capacity of 30,000 for single games, would have been privately built by Lewis Wolff and John Fisher, the primary owners of the Earthquakes, with San Jose State providing the needed land.

Additionally, the team and the university would build community soccer fields across Senter Road in Kelley Park using San Jose municipal bond money that had been approved years earlier for the purpose but never spent.

[9] Seating capacity remained at 30,456 until 2019, when it was temporarily reduced to 21,520 as part of a massive east-side stadium renovation project that included construction of the $70 million Spartan Athletic Center.

In August 2016, Citizens Equity First Credit Union purchased sole naming rights to Spartan Stadium for $8.7 million.

The north end zone bleachers were removed to make way for construction of a new state-of-the-art video scoreboard and outdoor bar and lounge area.

The stadium previously hosted commencement ceremonies of San José State University every spring, as well as musical concerts throughout the year.