Rare new-construction opportunity featuring a legal three-bedroom ADU, offering exceptional flexibility for multigenerational living, in-laws, guests, or rental income. Each residence has its own private entrance and deck with beautiful water and Boston skyline views. The main Colonial offers four stories with four bedrooms, a two-car garage, and a spacious open layout with a chef's kitchen featuring an oversized island, walk-in pantry, breakfast nook, quartz countertops, and stainless-steel appliances. The kitchen flows into the formal dining room and fireplaced living room. The finished lower level offers flexible living space with walkout access to the backyard and a wet bar, ideal for a media room, game room, gym, or additional living area. Upstairs, the primary suite features vaulted ceilings, a spa-like bath, and walk-in closet, along with three additional bedrooms and a spacious family room. The finished third floor provides additional flexibility for a home office, playroom, media room, or bedroom. The separate legal ADU features three bedrooms, its own private entrance, dedicated garage, and private deck, making it ideal for extended family, guests, or rental income. An additional flexible space can be used as a home gym, office, or living area. Conveniently located minutes from the East Braintree Commuter Rail station and major highways, with easy access to Boston, the South Shore, and Cape Cod. A rare combination of brand-new construction, expansive living space, stunning views, and the flexibility of a legal three-bedroom ADU.