An absolute masterpiece of design and elite engineering by an award-winning local MA builder. This high-performance, energy-efficient home features an incredibly tight envelope insulation package, supreme HERS score, an ERV fresh air system, and a balanced Make-Up Air system. Inside, four-inch white oak floors lead to a magnificent family room with coffered ceilings and a chef's kitchen boasting handmade custom cabinetry by a premier local millworker. High-end, insulated Pella EnergyStar windows flood the sprawling 5,450 SF plan with light, highlighting 4 bedrooms—each featuring its own private en-suite bath! An expansive FINISHED lower level is the ideal footprint for a future golf simulator or home theater. Positioned to maximize beautiful scenic views, this estate is located in a premier neighborhood featuring direct access to 10 acres of protected Sudbury River trails. Just 26 miles from Boston and a short walk to the commuter rail. Ask about the $25K buyer credit on this home!