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Maison Commonwealth’s Penthouse is an absolute one-of-a-kind in Back Bay. Spanning two combined brownstones and a new rooftop construction, the 4 bedroom Penthouse totals nearly 4,200 square feet of living space across two spacious levels. With only five residences, Maison Commonwealth is a true boutique development. From bathrooms with floor-to-ceiling large format marble, imported hand-carved European mantels, plaster crown molding, and sleek modern Italian kitchens featuring Wolf and Subzero appliances, Maison Commonwealth offers finishes for those that notice the small differences that make the whole coherently beautiful. The top level features front and rear walk out terraces and a 22-foot-wide motorized glass wall, frameless glass skylights, a kitchenette, and nearly 1,000+ square feet of deck space, bringing modern indoor-outdoor living to Commonwealth Ave. Property concierge, 2 Indoor Heated Garage Parking, Direct Elevator Access, 1 storage unit.