Privately situated on a scenic road near the charming hamlet of Mountainville, "Mavin Hill", a Sophisticated Country Colonial is filled with plenty of natural light and features a wonderful layout. Custom built with gorgeous detailed moldings, oversized windows and red oak wood flooring throughout, this beautifully maintained home offers spacious, inviting principal rooms and expansive outdoor space, making the residence and grounds ideal for entertaining. The Chef's Kitchen overlooks the lush rear yard and features new quartz counters and sink, ample cabinetry, spacious breakfast area, stainless new ('25) Viking 6 burner cooktop, Bosch dishwasher and SubZero refrigerator plus an adjacent built in bar area. Relax on the deck or poolside at the free form, heated, salt water pool with spa. Ideal for a guest suite with a secondary entrance and rear staircase leading to 2 possible guest areas, each with full bathrooms. In 2025, the luxurious primary bath was renovated as well as each of the other bathrooms. Additional, substantial updates include a new ('25) roof, ('24) LL HVAC, ('25) driveway. and pool cover. Multiple options for a private office location. Highly rated schools. Less than 4 miles from Rte. 78 and Rte. 22 for easy commuting, shopping, fine dining and 45 mins to Newark Liberty International Airport. Tewksbury Twp is known for its natural beauty and preserved land. Golf clubs, equestrian facilities and parks for hiking and exploring are nearby.