A Rare Mid-Century Modern Masterpiece Inside the Beltway! Single-level mid-century modern 4-bedroom, 3.5-bathroom home in Pine Spring, Falls Church, VA. Renovated and expanded in 2021 and an addition that is built for a seamless California-style indoor-outdoor living inside the Beltway. Three expansive sliding wall doors open the main living areas and primary bedroom to an Ipe Brazilian hardwood deck shaded by a motorized StruXure smart pergola with retractable screens and automatic rain-sensing louvres, enclosing the space at the touch of a button into a climate-controlled outdoor room. Glass retractable walls and oversized windows flood the home with natural light. The fully equipped outdoor kitchen includes a built-in grill, sink, and beverage refrigerator, all overlooking a flat 0.29-acre lot. Inside, the 2,305-square-foot open-concept layout centers on a waterfall-edge kitchen island, skylights, and a handmade Mercury Mosaics ceramic tile backsplash. The primary suite features a spa-style bathroom with a deep soaking tub, private infrared sauna, and a walk-in closet with built-in storage and extensive designer lighting. A private secondary guest suite with ensuite full-bathroom and its own separate entrance offers flexibility for visitors or a home office. The exterior is clad in low-maintenance Ipe Brazilian hardwood siding, and a one-car garage with EV charging plus a large crawl space provide generous storage. Originally built in 1952 and transformed by the 2021 renovation and addition, new roof, water heaters, HVACs, this Pine Spring home sits on a private street, with no-thru traffic at the beginning of a cul-de-sac. Pine Spring is a close knit community that is known for friendliness and seasonal block parties. Just minutes from the Mosaic District's shops and restaurants, with quick access to Route 50, I-495, and under 3 miles to the the Dunn Loring-Merrifield Metro. Fairfax County Public Schools. Move-in ready.