CENTURY 21 Banner Realty is proud to be located in the historic Irvington district of Fremont, which was incorporated on January 23, 1956, from the merger of five smaller communities: Centerville, Irvington, Mission San Jose, Niles, and Warm Springs.

The area now comprising Fremont and the adjoining cities of Newark (now an enclave within Fremont) and Union City was formerly known as Washington Township. Fremont is located in the southeast area of the San Francisco Bay Area in Alameda County.