Dogpatch is a neighborhood in San Francisco, California, roughly half industrial and half residential. It was initially a working-class neighborhood, but has experienced rapid gentrification since the 1990s. It now has similar demographics to its western neighbor Potrero Hill – an upper middle-class working professional neighborhood. Dogpatch was originally part of Potrero Nuevo and its history is closely tied to Potrero Hill. Dogpatch has its own neighborhood association but shares a merchant association, Democratic caucuses, and general neighborhood matters with Potrero Hill. Location Dogpatch is located on the eastern side of the city, adjacent to the waterfront of the San Francisco Bay, and to the east of Potrero Hill. Its boundaries are Mariposa Street to the north, I-280 to the west, Cesar Chavez to the south, and the waterfront to the east. It contains housing, some remaining heavy industry, more recent light industry, and a new but growing arts district. In 2002 it became an officially designated historic district of the city of San Francisco. Dogpatch is part of the City's neighborhood plans. Attractions and characteristics Dogpatch is mostly flatland and has many docks (most of them built atop landfill). It is an industrialized area with pockets of residences. Many warehouses were converted to lofts and condos in recent years. Like its neighbor Potrero Hill, Dogpatch enjoys sunny weather in San Francisco. Its Caltrain station at 22nd Street makes Dogpatch popular with commuters who work south of San Francisco. 22nd Street is one of only nine stations in Caltrain’s 29-station system that receive "Baby Bullet" express service in addition to regular service. The main commercial artery of Dogpatch is Third Street, which contains retail and service businesses and is served by the T Third Street light rail line operated by the San Francisco Municipal Railway (MUNI). The Third Street corridor connects Dogpatch to San Francisco's downtown, via new development zones including Mission Bay and the UCSF research campus. Notable sites in the neighborhood include Irving M. Scott School, the oldest public school building in San Francisco, built 1895; the historic shipyards at Pier 70; a boxing gym, where many local amateurs train; a number of restaurants & breweries; Esprit Park, a sunny lawn with bordering trees that was donated to the city by Esprit Corp.; the headquarters of the San Francisco chapter of Hells Angels; and numerous historical residences. Unique to San Francisco, property owners in Dogpatch and Northwest Potrero