This charming 4-bedroom Colonial is brimming with curb appeal, from the meticulously maintained landscaping to the striking bay window and window boxes. Upon entry, you're greeted by an open layout, enhanced by soaring ceilings, abundant natural light, and beautiful hardwood floors throughout. The inviting living room features a stunning fireplace and offers access to the sunroom, where you'll be surrounded by windows at three exposures, overlooking the lush backyard. The dining room is graced with a large bay window, filling the space with natural light. The kitchen boasts stainless steel appliances, granite countertops, and a walkout to the deck, perfect for entertaining. A half bath completes the first floor. Ascending to the second level, you'll find three generously-sized bedrooms and a full hall bath, featuring a clawfoot tub, beadboard, and an updated vanity. The third level is dedicated to your private primary suite, offering a spacious bedroom with ample room for a sitting area or office space. The lower level hosts a laundry area and a versatile recreation room, ideal for work or play. This level also provides a walkout to a cozy under-deck seating area on the patio, making it perfect for hosting or relaxing. The well-manicured backyard features a detached two-car garage. 81 Mountain Avenue is conveniently located near Memorial Field, Brayton Elementary School, Summit Middle School, and Downtown Summit & 1/2 mile from the Summit Train Station. Don't miss out!