Available for the first time in 37 years in Bethesda's highly coveted Sumner neighborhood! Situated on a beautifully landscaped lot on one of the neighborhood's best blocks, this special home is a testament to meticulous stewardship and thoughtful modern expansion. Offering over 6,000 square feet across four levels, the home has been updated throughout the years including a four story addition, replaced HVAC systems (2023 & 2020), renovated baths, exterior paint (2023), interior paint and more. The main level features an ideal floor plan designed for entertaining and comfortable everyday living. A gracious entry foyer leads to the formal dining and living rooms, as well as a cozy home office with powder room. The heart of the home is the family room addition with nearly 10-foot ceilings, a fireplace, a wet bar, and access to the rear deck and side terrace. The gourmet kitchen features a dedicated breakfast area, desk nook, and connects seamlessly into the formal dining room. Beyond the living room is a light-filled sitting room with heated floors and opens to the rear terrace. The second level is complete with four bedrooms, three full baths, and a laundry room. The primary suite serves as a private oasis, featuring a fireplace, dual walk-in closets, and a luxurious marble-clad spa bath. Bedroom #2 includes a recently updated en-suite bath while bedrooms #3 and #4 are connected by an updated bath. The third level offers endless opportunities to serve as bedroom #5, a second home office, playroom and more. Abundant storage space completes this level. The lower-level recreation room includes a fireplace, kitchenette, mudroom, and direct entry to the built-in 2-car garage. A second powder room is conveniently located on this level and can be converted back into a full bath. Located just off Massachusetts Avenue, Sumner is celebrated for its strong community feel, tree-lined streets, and easy commuter routes to downtown Washington and Northern Virginia. This highly desirable neighborhood offers proximity to local parks, transit, and the vibrant new shops and dining at Westbard Square. Outdoor enthusiasts enjoy access to the Capital Crescent and Little Falls Trails for hiking and biking. Located in the Wood Acres, Pyle, and Walt Whitman school cluster.