Welcome to this beautifully maintained 4-bedroom, 2.5-bath Colonial in Mountainside, just minutes from the scenic trails and natural beauty of the Watchung Reservation. This timeless home offers the perfect blend of classic architecture and modern convenience. Step inside to find a warm and inviting layout featuring a sunlit formal living room, a spacious dining room ideal for entertaining, and a large family room that opens to the backyard perfect for indoor-outdoor living. The updated kitchen BOAsts ample cabinet space for all your culinary needs. Throughout the eat-in kitchen and family room, Hunter Douglas automatic shades provide energy efficiency with a touch of luxury, enhancing comfort and style with the ease of smart-home technology. Upstairs, the primary suite offers a private retreat with an en-suite bath. Three additional bedrooms provide flexibility for guests, or a home office. The expansive backyard is a true highlight, offering a serene setting for gatherings, play, or relaxation. Located on a tree-lined street with easy access to top-rated schools, downtown Westfield or Summit, major highways, and NYC transportation, this home combines tranquility with convenience. Don't miss this opportunity to own a piece of classic suburban charm in one of Union County's most desirable communities! Fireplaces are "as is" with no known issues.