Built in 1984, 2101 Webster is a 475,000 square foot Class A office tower located in the Lake Merritt district of downtown Oakland. In 2008, a 215,000 square foot addition, called 2100 Franklin, was built and the two buildings are now collectively referred to as Center 21. 2100 Franklin is the first non-owner occupied LEED-Gold office tower in Oakland.

Center 21 offers panoramic views of Lake Merritt and numerous developments currently underway in the area. Parking is provided by a 695-space garage located at 2353 Webster Street and by 56 subterranean parking spaces.