Welcome to 5105 Summit Dr, a charming colonial home nestled on a nearly 1-acre lot in Fairfax! With over 3,000 square feet of living space, this home offers a perfect blend of classic charm and modern upgrades. The expansive, flat backyard features an incredible treehouse, making it a dream for all ages! Step inside to discover beautiful hardwood floors on the main level. The formal living room boasts a designer wallpaper accent and flows seamlessly into the dining room, where board and batten detailing and updated lighting add elegance. The upgraded kitchen features quartz countertops, a custom backsplash, a farmhouse sink, stainless steel appliances, and gas cooking. A peninsula island with designer pendant lighting provides extra seating and prep space. The sunny breakfast area opens to the deck, while a step-down family room with a gas fireplace and skylights leads to a spacious screened porch. Get ready for endless outdoor fun! Fire up the grill for a summer barbecue, play ball in the grassy yard, and gather around the fire pit for cozy evenings under the stars. Children of all ages will love to hide away in the treehouse--complete with power! Back inside, the updated laundry room features stylish tile flooring, front-load machines, and access to the two-car garage. Upstairs, the large primary suite offers a walk-in closet and a dressing area with ample storage, leading to an updated en-suite bath with a Bluetooth speaker setup. Three additional bedrooms and an updated hall bath complete the upper level. The remodeled lower level is built for entertainment, featuring a media room with a projector and screen—perfect for movie nights or watching the big game! A bonus room offers flexible space for a home gym, hobby area, or playroom. Conveniently located off Route 29 with easy access to Fairfax County Parkway and I-66, this home is just moments from shopping, dining, and everyday essentials—including Wegmans, Costco, and downtown Fairfax City! Don't miss this opportunity—schedule your tour today!