A rare Georgian Colonial estate offering over 12,000 square feet of refined living on 1.5 secluded acres in Castle Pines–where mountain sunsets, privacy, and timeless architecture converge. Tucked away at the end of a cul-de-sac, this exceptional residence offers 8 bedrooms & 9 bathrooms, highlighted by a main-level primary suite and a main level guest suite. The home features soaring ceilings, 3 fireplaces, Brazilian cherry hardwood, classic pillars, brass accents, an open yet elegant floor plan and a walk-out lower level with rare 10’6″ ceilings. This custom home offers 6,800 finished sq ft above grade, complimented by an additional 5,000 finished sq ft in the walk-out lower level, featuring an indoor basketball court. Exceptional amenities include an art studio, exercise room, private theatre, wine grotto, two full kitchens, two laundry rooms, and 2 garages providing 4+ parking spaces. Designed for both grandeur and comfort, the main level includes a tranquil primary suite that offers a true retreat experience, complete with spa-like amenities and outdoor access. The gourmet kitchen flows seamlessly into the great room and opens to the deck, creating an ideal setting for outdoor entertaining. The upper level offers 5 generously sized bedrooms with custom walk-in closets and a spacious bonus room. The walk-out lower level is designed for laughter and recreation, featuring multiple living areas and the versatile indoor sports court with its own 3/4 bath! The grounds are equally impressive, featuring mature trees, visiting wildlife, a serene flagstone fire pit retreat, fenced garden area, dog run, and a private orchard with apple, pear, and plum trees–creating a true estate experience rarely found this close to the city. Ideal for buyers seeking privacy, scale, and timeless design–whether for multigenerational living, hosting large gatherings, or simply enjoying Colorado’s natural beauty in a refined estate setting. See Private remarks for recent improvements.