637-639 San Jose Avenue is a charming Edwardian style duplex located in San Francisco's Bernal Heights neighborhood. The bottom-floor unit consists of a two-bedroom, one-bath flat and the top floor is a two-level, three-bedroom, two-bath unit. There is two-car tandem parking and an extra storage area in the basement that leads to the backyard. The units are separately metered for gas and electricity; each is heated by a forced-air furnace and has a separate water heater.