City Center Building, Commercial building in downtown Hayward, California

The City Center Building, locally called Centennial Hall, was an eleven-story steel-reinforced concrete tower between Foothill Boulevard and City Center Drive in downtown Hayward, next to the PlazaCenter mall. Its top floor held the municipal government and lower floors were leased to businesses. Demolition began in January 2020 and was completed by September 2020, leaving an empty lot.

The City of Hayward opened the steel-reinforced concrete building on October 18, 1969; plans had called for 20 floors and a cinema, but only 11 floors were built. It served as city hall until 1998, when the new City Hall opened at B Street and Watkins Street. The 1989 Loma Prieta earthquake damaged its structural integrity and the city government moved out. Demolition began in January 2020 and was completed by September 2020.

Locals call it Centennial Hall, and the building was the first structure of the planned City Center complex; the Centennial Hall Convention Center was later added beside it and closed on November 1, 2009. Architectural critic Allan Temko nicknamed it "the toaster" in the 1970s, which turned public opinion against the tower. The building was demolished between January and September 2020, so only the empty lot remains.

The building no longer stands: demolition began in January 2020 and was completed by September 2020, and the lot between Foothill Boulevard and City Center Drive remained empty as of January 2026. Visitors to downtown Hayward should look for the cleared site next to the PlazaCenter mall rather than a tower.

Architectural critic Allan Temko nicknamed the building "the toaster" in the 1970s, and the label shaped public opinion against it. The building was demolished between January and September 2020, and the lot was still empty as of January 2026.