This attached contemporary residence with flexible 1F/2F use was gut renovated in the Danish Modern style in the 1980s. Featured are open spaces, decks looking out on a yard/garden and a stunning MBR suite with many skylights and much exposed natural wood. This home could potentially be used as a 4 level 4-6 BR single family with 2d floor opened up. Its current use is as a spacious 4 level owners unit and 2d floor front apartment. Or, open the 2d floor to make two similar sized units, 1st & lower level (1,500sf) & 2d & 3d floors (1,800sf). Conversion to 2 condos may be a possibility. The house is presently ~11 rooms, ~3,390 sf living area + ~519sf basement area=3.909sf gross. The location is excellent, close to Harvard Square and the Red Line, Harvard University and the Charles River. Parking is on street, with Cambridge permit. Seller also designed and built townhouses at 9-13 Surrey Street. CHILDREN MUST BE ACCOMPANIED BY ADULT due to open design railings. OFFERS TUESDAY 2 pm