Nestled in the highly sought-after Glen Mar Park, this rarely available, fully updated Colonial offers the scale, privacy, and modern functionality that buyers consistently compete for in this pocket of Bethesda. Originally built in 1950, comprehensively renovated in 2007, with ongoing upgrades since, the home delivers approximately 3,327 square feet of move-in-ready living space with 5 bedrooms and 3 full bathrooms plus one half bath, combining classic architecture with meaningful, lasting upgrades. Inside, refinished hardwood floors, crown molding, recessed lighting, and custom built-ins create a cohesive, elevated interior. The layout is intentionally flexible for today's lifestyle, featuring a formal dining room, an inviting living room with gas fireplace, and a main-level office/den that functions seamlessly as a guest suite with an adjacent full bath-ideal for multi-generational living or extended stays. The kitchen is designed as the central gathering space, with upgraded countertops, an oversized island, and open flow to the dining and living areas that supports both daily living and effortless entertaining. The upper level features well-proportioned bedrooms and a true primary suite retreat, complete with a spa-style bathroom featuring a soaking/jacuzzi tub, dual vanity, and a walk-in closet-offering separation, privacy, and comfort that is increasingly difficult to find at this price point. A full attic provides exceptional storage and potential future expansion, adding long-term flexibility that further enhances the home's value profile. Additional upgrades include energy-efficient double-pane windows, basement insulation, and an EV-ready setup compatible with Tesla charging. The exterior is a standout feature: extensive hardscaping, stone retaining walls, and a thoughtfully tiered landscape create a private, wooded backdrop rarely found in comparable homes. Multiple outdoor living areas, including a generous patio, extend the home's entertaining capacity across seasons. This is a fully realized, turnkey Colonial in one of Bethesda's most established neighborhoods-offering space, privacy, and modern livability in a location where updated homes of this quality and completeness are seldom brought to market.