Bethesda's Best-Kept Secret. From the exterior, 5617 Northfield Road appears to be a classic Colonial, but step inside and discover a wonderful surprise-an expansive, thoughtfully designed home that offers far more space than meets the eye. 5617 Northfield Road offers the perfect blend of warmth, charm, and thoughtful updates in the heart of Bethesda. This beautifully expanded four-bedroom, three-and-a-half-bath home offers close to 4,600 square feet of living space and features two additions, with the most recent completed in 2016, creating ample room filled with natural light and an inviting flow throughout. More than just a house, this home radiates comfort, character, and care. The spacious primary suite is a true retreat, complete with a sunroom sitting area and two walk-in closets, providing both comfort and exceptional storage. Hardwood floors run throughout the main and upper levels, while the staircase and lower level are finished with luxurious mohair carpeting, adding warmth, texture, and elegance throughout the home. The walkout lower level offers exceptional additional living space, including a bonus room ideal for a home office, gym, playroom, guest space, or hobby room, along with a separate storage room for seasonal items and organization. Outside, the charming yard feels like a hidden French cottage garden-private, picturesque, and full of personality. Additional highlights include a whole-house generator, bright and sunny interiors, and timeless details that make this home feel truly special. Ideally located close to everything Bethesda has to offer, this is a home designed for both everyday living and lasting memories.