EXCEPTIONAL OPPORTUNITY! This fantastic property is perfectly located, sitting on a R2 lot with a very nice and HUGE backyard and a private alley behind that. This is the perfect house for those wanting to add on. Golden opportunity for building a second home or large in-law unit could be erected, per California Legislation. Perfect for a growing family, for a second source of income, or for a developer. This home is blocks away from downtown South San Francisco, minutes from 101, 280, BART, Caltrain, SFO, and just across Hwy 101 there are numerous biotech companies. The main floor has two good-sized bedrooms, one updated bathroom, a large kitchen/living space and a large playroom for kids. Downstairs has an additional bedroom and a half bath. Back yard is just incredible. The large, over 5,600 sq.ft. back yard features a terraced landscape, mature trees, and has a peaceful, zen-like quality. A large gate opens onto the private alley in the rear. Welcome to your new home!