Located on what was once Bay Farm Island, the Community of Harbor Bay Isle Owners’ Association is a 917-acre planned community in the City of Alameda at the geographic center of the San Francisco Bay Area. Harbor Bay Isle includes a Master Community (consisting of 20 separate project associations), two salt water lagoons, a business park, spectacular views of San Francisco Bay, and extensive opportunities for recreation in a park-like environment…truly a beautiful place to live, work and play.