Rare Lynden estate with guest house on nearly 1 acre in a quiet cul-de-sac, offering luxury living, multigenerational flexibility, and investment potential near downtown Lynden and an easy drive to Bellingham. Built in 2018, this custom property includes a 3,500+ SF main home with 4 bedrooms, 4 baths, vaulted ceilings, open-concept living, abundant natural light, hardwood floors, designer tile, statement fireplace, chef's kitchen with premium appliances, walk-in pantry, breakfast nook, bonus room for office, media, or gym, and attached garage. The separate ADU / guest house is fully independent with its own kitchen, living space, baths, and laundry, ideal for multigenerational living, guests, extended stay housing, or private work-from-home setup. Set on 0.81 acres of manicured, park-like grounds with lush lawn, curated outdoor living, room for gardening or play, separate driveways, abundant parking, and RV garage. Infrastructure includes shared well and dual septic systems. Enjoy privacy, space, and versatility with close access to Lynden schools, shops, restaurants, and everyday amenities. A rare Northwest Washington opportunity for buyers searching dual living, two homes on one property, guest quarters, luxury acreage, or flexible living near Lynden and Bellingham.