This property is a total three units in 2 buildings. 3878-80 21st St consits of two charming flats. The upper flat is 2 bedrooms plus office or third bedroom,living room, kitchen and split bath. The lower is two bedrooms, living room, kitchen and split bath. 799 Castro St (corner of 21st) is a separate building on the same lot currently occupied by a law firm. It consists of a large open area plus partioned offices of 1190 sq ft plus a separate 120 square feet rear office. There's a full kitchen plus bath.