Set on 3.55 acres in the prestigious Preserve at Barleywood, this exceptional estate offers nearly 5,000 finished square feet designed for todays modern living needswhere luxury, flexibility, and functionality come together seamlessly just minutes from Charles Town and within reach of Northern Virginia commuter routes. This 5-bedroom, 6.5-bath residence is thoughtfully designed for multi-generational living, featuring a fully integrated in-law suite that lives like a private residence of its own. The suite includes a full bedroom, accessible bath with walk-in shower, widened doorways, seamless low-maintenance LVP flooring, a full KitchenAid appliance package, efficiency kitchen, private laundry, and dedicated living and dining spaceideal for extended family, guests, or long-term flexibility. Beyond the suite, the main home unfolds with a classic, welcoming design and over 4,000 square feet of expansive living space. A bright, open foyer sets the tone, leading into a dramatic two-story living room with soaring windows and a wood-burning fireplace. The kitchen is both functional and beautiful, featuring a gas range, granite countertops, center island, rich wood cabinetry, and an extended sunroom dining area that captures sweeping views of the surrounding landscape. Additional main-level spaces include a formal dining room and a flexible sitting room or office, all anchored by hardwood flooring throughout. The upper level offers generously sized bedrooms, including a spacious primary suite designed for comfort and retreat. The home also includes a massive unfinished basement, offering incredible potential for future expansionwhether envisioning a home theater, fitness space, additional living quarters, or recreation area. Step outside and the property truly becomes something special. The outdoor living experience is designed for both relaxation and entertaining at scale. A 20x40 in-ground pool is surrounded by extensive hardscaping, complemented by a two-tier composite deck overlooking the space. The pool house is fully equipped with bar seating, lounge area, and a full bathroom, creating the perfect setting for gatherings that carry from day into evening. The grounds offer multiple areas to dine, entertain, and unwind, including a covered fire pit area ideal for quiet nights and storytelling. Practicality meets lifestyle with abundant storage, including space beneath the deck, a 10x12 shed for tools and pool equipment, and an impressive 30x50 pole barn with RV-height doorperfect for hobbyists, business use, or recreational storage. A double driveway with lighting extends to the rear of the property, complete with RV electrical hookup and additional parking near the pole barn, offering flexibility rarely found in residential settings. Significant system upgrades provide peace of mind, including three HVAC systems (recently replaced), a new mini-split in the pool house, updated septic field, new well pump (2020), whole-house water treatment system with reverse osmosis, UV light, and filtration, a 1,000-gallon propane tank, and a new roof with 50-year architectural shingles. This is more than a homeits a private retreat, an entertainers dream, and a solution for evolving living needs, all within one of Jefferson Countys most sought-after communities. For buyers searching for space, versatility, and a property that truly delivers on both lifestyle and location, 140 Parliament Way stands in a category of its own.