Welcome to 3940 Montclair Lane, an updated and impeccably maintained 4-bedroom, 3-bath home situated on a private corner lot in Boulder's highly sought-after Four Mile Creek neighborhood. This spacious three-story home offers a thoughtful blend of luxury and function, with hardwood floors throughout and a light-filled main level. The layout includes a formal office, a cozy living room with fireplace, and a beautifully remodeled kitchen featuring granite counters, smart LED lighting, a built-in breakfast nook, and newer appliances. From the kitchen, enjoy views of the lush, fully fenced backyard and expansive Trex deck, perfect for entertaining or quiet outdoor living. Upstairs, you'll find a rare four-bedroom layout, including a spacious primary suite with a recently remodeled five-piece bath and soaking tub. This floor plan is ideal for families or anyone who values having all bedrooms on one level. The finished lower level adds even more flexibility, with a home gym, media room complete with a built-in projector, additional office space, and plenty of storage. Additional upgrades include smart shades, a whole-house humidifier and purifier, updated light fixtures, fresh interior paint, and a radon mitigation system. The attached three-car garage provides extra space for storage and convenience. Located just steps from trails, parks, soccer fields, Elks Pool, and top-rated schools, this home offers both tranquility and quick access to North Boulder's best dining, shopping, and recreational amenities. This is a rare opportunity to own a move-in ready home in one of Boulder's most welcoming and family-friendly neighborhoods. Solar panels are 100% owned by the sellers and will stay with the home. Do not miss the 3D Virtual Tour, aerial photos, and the floor plans.