Welcome to 5819 Grosvenor Lane, a well-maintained brick home in Bethesda offering comfortable living, extensive updates, and a versatile walk-out lower level. The main level features hardwood floors and a beautifully updated kitchen renovated in 2016 with quartz countertops and Miele appliances, including a gas cooktop, vent hood, oven, and dishwasher. Pella double-pane insulated windows, installed in 2010 or later, enhance comfort and energy efficiency throughout the upper level. A secure steel front door with a reinforced steel frame was added in 2024. The bright, well-lit lower level, renovated in 2010, offers exceptional flexibility with one bedroom, a full bathroom with shower, kitchenette remodel in 2026 with refrigerator, electric stove, and washer and dryer; small breakfast bar, recessed lighting, and a separate entrance. Double French doors open directly to the patio and backyard. This self-contained space offers excellent potential as an in-law suite, guest quarters, home office, or rental unit. The unfinished portion of the basement adds valuable functional space, including a utility room and an exercise/gym area. Major improvements include a new roof in 2024 and a Lennox HVAC system replaced in 2022. The home features gas heat and a 50-gallon Ruud gas water heater. Outside, enjoy the patio and large backyard. Detached two-car garage with electric vehicle charging station. Generous driveway providing ample parking and storage. Conveniently located near Grosvenor-Strathmore Metro, Strathmore Music Center, NIH, Walter Reed National Military Medical Center, shopping, dining, parks, and trails, with easy access to I-495 and I-270. An excellent opportunity to enjoy an updated Bethesda home with flexible living space, no HOA, and convenient access to many of the amenities the area has to offer.