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 Governor Livingston High School. Enjoy nearby Watchung Reservation, Trailside Museum, and Watchung Stable. Close to major highways and Newark Airport.