This timeless brick colonial nestled on a quiet cul-de-sac in the heart of Ashburn offers 4 Bedrooms and 3.5 Bathrooms. Flooded with natural light, 21934 Castlehill Ct boasts extraordinary features such as hardwood flooring on the top 2 levels, fully finished basement and a stunning backyard oasis featuring a luxurious private heated pool and hot tub. An open gourmet kitchen with white cabinetry and stainless steel appliances creates a perfect canvas for preparing meals and entertaining. The home's upper level offers a spacious master suite with a walk-in closet, separate sitting area with a fireplace, and an en-suite bathroom with dual vanities and separate shower / bathtub. Three additional, well-apportioned bedrooms, and a full bathroom complete the upper level. The fully-finished basement features wet bar with beverage fridge, stone fireplace, and a bonus room, ideal for a home gym or media room. The expansive backyard offers a fenced in private heated pool and hot tub, with a built-in gas grill and smoker, stone-paver patio and a large grassy area. Two-car side-load garage offers ample storage space and a Tesla wall connector. Full yard equipped with state-of-the-art sprinkler system. Located half-a mile to the Loudoun Metro Station, under construction now! Just minutes to a shopping center with various restaurants, to the Greenway and Waxpool Rd. Sellers have a video camera outside in the back yard that picks up audio.