This masterfully designed contemporary home is peerless in its balance between simplicity + striking composition. The unique upside-down floorplan has you descending a floating mahogany staircase to the main living level where 10' ceilings + 8' windows provide an immediate connection to the outdoors. The sleek chef's kitchen is outfitted w/Miele appliances, a magnificent Calacatta marble waterfall island + custom floating built-in cabinet. A double-sided stucco wood-burning f/p anchors the dining + living rooms while a family room is off the kitchen. A corner office, theater w/gas f/p + guest suite completes this level. The second level has one wing with 3BR + 2BA, the other the primary suite w/private balcony, sitting area, lux bath w/jacuzzi tub + steam shower as well as home gym + laundry. The expansive flat backyard is lined w/mature perimeter trees + offers a chic concrete patio, custom fireplace + room for a pool. This private residence is less than 20 mi from Boston.