Fabulous opportunity on a large, mostly level, sun-drenched lot, in Mill Valley's Alto neighborhood, just across from Horse Hill open space. Loads of potential! This property has been in the same family for many years. The house is presently configured into three units. The main level contains a charming two-bedroom, one-bath home with a spacious living room, open-beam vaulted ceiling, hardwood floors and a wrap-around deck. Also on the main level is a small one-bedroom, one-bath unit. The lower level, with a private rear entrance, features an additional one-bedroom, one-bath unit with a large kitchen and a living room. Detached 900 sf (+-) three-car garage with an additional half-bath. Large front and rear yards. Work within the existing footprint or create something new. Either way, this property has great possibilities. Blocks to Edna Maguire School and close to shopping, trails and 101.