GORGEOUS 6.7 acre (not in ALR!) mountaintop estate with spectacular 360 degree views bordering famous Sumas Mountain Regional Park for amazing mountain biking, hiking, and swimming in beautiful Chadsey Laky. Enter your private, gated driveway leading past your koi pond to your custom mountaintop home with 3 fireplaces, vaulted ceilings, skylights, massive living room and dining room with spectacular mountain and valley views. 2 master suites with walk-in closets and multi-piece baths. New stainless steel appliances in your large kitchen. 1389 SF lower floor has walkout entry for income/inlaws. Elevator infrastructure. Tons of storage. Dry hydrant. Excellent hydronic heating. Cleared property ready for a barn or shop. Schools nearby for children of all ages. Best location on the mountain.