Welcome to 5800 3rd St S, an updated detached home in sought-after Glencarlyn, offering the space, yard, and privacy buyers rarely find at this price point in Arlington. Situated on a 6,000 sq ft fully fenced lot, the home provides rare outdoor space ideal for entertaining, gardening, or pets. The main level features a bright living area that flows into a renovated kitchen with quartz countertops, stainless steel appliances, glass tile backsplash, and a center island. A sunny dining area opens directly to a 20-ft rear deck, creating an easy indoor-outdoor layout perfect for relaxing or hosting. Upstairs offers two bedrooms and a full hall bath. The finished lower level includes a third bedroom, full bath, and laundry area, providing flexibility for guests, a home office, or additional living needs. Additional highlights include hardwood floors, driveway parking for two cars, and a spacious fenced yard, a rare combination for detached homes in Arlington. Conveniently located near Ballston, parks, trails, commuter routes, and Washington, DC, this home offers the ideal balance of neighborhood charm and everyday convenience.