Rare opportunity to own a versatile property featuring a 4-bedroom, 2.5-bathroom, 1,985 sq ft main home plus a fully self-contained 817 sq ft ADU with a separate entrance, full kitchen, bedroom, office, and 3/4 bath. Ideal for multigenerational living, guests, or rental income to help offset mortgage costs. The main living area features two living rooms, multiple decks, generous gathering spaces for everyday living and entertaining, and large windows that provide abundant natural light throughout the home. The ADU features its own entrance, kitchen, laundry, living room with fireplace, bedroom, office, bathroom, and private deck, creating a true second living space. Additional highlights include three fireplaces, a two-car garage, ample off-street parking, and approximately 1,200 square feet of unfinished basement space currently used as a gym and workshop. Major updates include a new furnace (2025), heat pump (2025), roof (2023), whole-home generator (2023), appliances (2023), a newer water heater, and a 500-gallon underground propane tank. Located just one street from the Stimpson Family Nature Reserve trailhead in Sudden Valley's desirable Gate 9, this home offers space, flexibility, and access to some of Bellingham's best outdoor recreation, including Galbraith Mountain, Lookout Mountain Preserve, Lake Whatcom, the Sudden Valley Golf Course, marina, parks, trails, and dog park.