Welcome to the penthouse! This distintive custom home expands the entire top level and features original beams and sky lights to create amazing sunlit spaces! The flowing design, outfitted w/luxurious finishes & thoughtful design provide a wonderful entertainment space! The generous primary bdrm stuns w/ accent wall and walk-in closet w/ ensuite. The remaining bdrms may do double duty as a nursery or office! Features include soaring ceilings, designer kitchens, w/ waterfall edge islands, SS app suite, gas cooking, in unit laundry The latest in sustainable living, includes Nest, Navien systems, ovrszd Pella high efficiency windows, Doorbird security app. Attention to every detail shines w/ deeded storage & prkng, semi private entrances, dog park, barbecue area. Desirably located in Columbian Sq, steps to Comm. rail, SS Hospital, Whole Foods, sports complex, all eateries & amenities, 23 min to Boston, min to beach.