Welcome to 3643 Overbrook Lane, a rare opportunity in the prestigious St. John's section of River Oaks. This home sits on an expansive lot with mature trees, two patios, and a wide, south-facing backyard—ideal for entertaining, relaxing, or future enhancements. Built in 1988 and purchased from the original owners in 2019, this classic residence offers soaring 12-foot ceilings throughout, with a dramatic 20-foot vaulted beamed ceiling in the Great Room. Hardwood floors, cove lighting, and three masonry fireplaces create a warm and inviting atmosphere across multiple living areas on the first floor, perfect for hosting guests or enjoying quiet evenings. The formal entry leads to a spacious library with front yard views and a fireplace, while the dining room flows seamlessly into a cozy den and galley-style kitchen with a butcher block breakfast bar. A functional home office off the kitchen provides a peaceful workspace with natural light. A private guest quarters behind the two-car attached garage—one of the few front-loading garages permitted in River Oaks—has been recently renovated and includes a full bath, making it ideal for visitors, extended family, or a fourth bedroom. Upstairs, you'll find three generously sized bedrooms, each with large closets and en-suite baths. The third floor features a massive attic with elevator access, partial climate control, and a cedar closet—offering exceptional storage or potential for future expansion. Additional highlights include elevator access to all three levels, sprinkler system and beautiful landscaping, a quiet, tree-lined street with walkability to Pumpkin Park, fine dining, and top-tier private and public schools. Whether you're a growing family seeking proximity to elite schools or a downsizer looking for elevator convenience and timeless design, this home offers unmatched value and location in one of Houston’s most coveted neighborhoods.