If a beautiful homesite is high on your wish list, 35529 Hudson Street deserves your attention. Nestled on a picturesque lot with mature trees and a seasonal stream, this property offers a setting that is increasingly difficult to find. And that's before you step inside the pristine stone-front Colonial that complements it perfectly. From the charming covered front porch overlooking mature landscaping accented by boxwoods, a stately oak tree, and a graceful Japanese maple to the expansive Trex deck overlooking the wooded backyard, this home embraces its natural surroundings at every turn. A dramatic two-story foyer with hardwood flooring welcomes you inside and opens to an elegant living room with crown molding and a gracious dining room ideal for entertaining. Large windows frame views of the treed rear yard, bringing the outdoors in. At the rear of the home, the open-concept kitchen and family room create a comfortable space for everyday living and gatherings alike. The kitchen features black granite countertops, a striking Moroccan marble backsplash, 42-inch cabinetry, abundant prep space, a center island with seating, pendant lighting, recessed lighting, and a sink positioned to enjoy backyard views. Step outside to the incredible Trex deck, designed with two generous gathering areas overlooking mature trees and the seasonal creek below. During parts of the year, the gentle sound of flowing water creates a peaceful backdrop for outdoor dining, entertaining, or simply relaxing. White railings accented by black pickets add a sophisticated finishing touch to this outdoor retreat. The family room is anchored by a stunning stacked-stone fireplace with stone mantel and filled with natural light from multiple rear-facing windows. The seamless connection between the kitchen, family room, and deck makes entertaining effortless. The main level also offers a large coat closet, secondary pantry, powder room with a window, and access to the oversized two-car garage. A notable feature of this home is its advanced fresh-air management system utilizing a Heat Recovery Ventilator (HRV) or Energy Recovery Ventilator (ERV). This system continuously replaces stale indoor air with filtered fresh outdoor air while mechanical dampers regulate oxygen intake. The result is enhanced indoor air quality and exceptional energy efficiency, helping the home remain comfortable year-round. Upstairs, four generously sized bedrooms each feature a walk-in closet. The primary suite offers abundant natural light, two oversized walk-in closets, a spacious sitting room, and a luxurious bath with raised dual vanities, a large shower, and an oversized linen closet. The sitting room is the perfect nook for reading, enjoying a morning coffee, practicing yoga, or simply appreciating the luxury of extra space. The suite comfortably accommodates a king-sized bed and additional furnishings while still feeling open and inviting. Three additional bedrooms offer excellent closet space and flexibility, while the hall bath features a raised vanity and tub/shower combination. Completing the upper level is a highly sought-after walk-in laundry room with built-in shelving and storage. The unfinished walk-up lower level features abundant natural light, double sliding glass doors to the backyard, only four steps to grade, and a three-piece rough-in for a future bath. Whether you envision a recreation room, guest suite, fitness area, home office, media room, or additional living space, the possibilities are endless. Mountain Valley residents enjoy an exceptional small-town lifestyle just minutes from the heart of Round Hill. Local favorites include Tammy's Diner, charming antique shops, a veterinary clinic, and convenient neighborhood markets for everyday essentials. Round Hill Park hosts holiday celebrations, seasonal festivals, and family-friendly events throughout the year, while the Round Hill Aquatic Center offers swimming, fitness, and recreation opportunities for all ages.