Westfield America, Inc., a precursor to Westfield Group, acquired the shopping center in 1998, and renamed it Westfield Shoppingtown Parkway, but dropped the "Shoppingtown" part of the name in June 2005. In 2013, Starwood Retail Partners acquired the mall, renaming the mall to its current name, Parkway Plaza.
Parkway Plaza was the first indoor shopping center to be built in San Diego, opening in the early 1970s. Constructing an indoor mall was ideal for the area, as El Cajon, its host city, is notably hot during summers. Since opening the mall, Parkway Plaza has expanded as necessary.