Welcome to this stunning custom home in sought-after Mountainside, offering nearly 3,900 sq. ft. of thoughtfully designed living space with approx 1000 sq. ft. basement with high ceilings and newer roof. With 4 spacious bedrooms and 3.5 baths, this home delivers flexibility across multiple levels. Beechwood School steps away. The first floor boasts a large kitchen with deck access overlooking a beautiful in-ground pool and private, resort-style backyard. A warm living room with wood-burning fireplace flows into a massive dining room with picture windows and space for a large table. Off the dining room is a sun-drenched sunroom wrapped in windows. The second floor features a princess suite with private bath, two more spacious bedrooms, and a hall bath. The third floor offers a private suite with spa-like bath, walk-in closet, and sitting/office area. The ground level includes a cozy family room with fireplace, half bath, laundry, walk-out access, and a two-car garage. The unfinished basement has high ceilings, is plumbed for a bath, and ready for more living space. Includes a newer roof & updated HVAC. Mountainside offers easy NYC access via Summit Midtown Direct and the Town Hall bus stop along Route 22. Enjoy top-rated schools: Deerfield School (Grades 3"8) won the 2024 Blue Ribbon Award, and students attend Governor Livingston High School. Enjoy nearby Watchung Reservation, Trailside Museum, and Watchung Stable. Close to major highways and Newark Airport.