Set beyond an iron gate on 1.9 picturesque acres along a private road, 1100 Green Valley is a distinguished Bryn Mawr estate offering the privacy, presence, and enduring character of a classic Main Line residence. Approached by a circular drive & framed by sweeping lawn, mature landscaping, & beautifully designed outdoor spaces, this handsome stone and brick Tudor-style home makes an unforgettable first impression. The grounds are lush and layered, with dogwood, holly, Japanese magnolia, pine, and mature evergreens providing year-round color. Inside, the residence has been thoughtfully refreshed while preserving the architectural detail, warmth, and craftsmanship that give it such distinction. A new roof, updated lighting throughout, freshly painted, and enhanced baths create a polished, cohesive feel, while the home's timeless character remains beautifully intact. The floor plan offers exceptional natural flow, with formal and informal spaces that connect effortlessly for elegant entertaining, everyday living, and quiet retreat. A gracious foyer introduces the home's timeless appeal and opens to the step-down living room, where hardwood floors, crown molding, a fireplace, and an adjoining sunroom, creating an elegant yet inviting gathering space. Nearby, a richly paneled office with closets, built-ins, and its own fireplace offers a refined work-from-home setting and could also serve as a 5th bedroom. A full hall bath and generous coat closet add convenience to this wing of the main level. Across the foyer, the formal dining room provides a beautiful setting for hosting, enhanced by built-in cabinetry and a sophisticated sense of style. The kitchen blends texture, charm, and function with vaulted beamed ceilings, exposed brick, and heated floors for added comfort, along with raised-panel cabinetry, marble countertops, a center island with seating, instant boiling water, and high-end appliances including paneled SubZero refrigerators and a Viking range with hood. A brick archway leads to the sun-filled breakfast area, where skylights and direct access to the grounds create a seamless connection to the outdoors. The FR is warm and inviting, featuring herringbone hardwood floors, a brick FP with built-ins, and an adjoining sunroom with a built-in wet bar. These spaces open beautifully to the patios and rear grounds, making the home exceptionally well-suited for indoor-outdoor entertaining. The main level also includes a spacious combined pantry and laundry room with custom cabinetry, wash tub, and excellent storage, along with a beautifully appointed powder room nearby. 3 HVAC systems, including 1st floor air filtration, further enhance comfort and livability. Upstairs, the private primary wing feels like its own retreat, offering hardwood floors, a cathedral ceiling, private terrace, custom closet, and a spacious bath with steam shower, separate soaking tub, and heated floors. An open office or lounge area leads to two additional bedrooms, each with walk-in closets and ensuite baths. A fourth bedroom suite, positioned just a half level above the two-car garage, includes its own full bath and offers wonderful flexibility for guests, an au pair, in-laws, or extended stays. The two-car garage is also wired for an EV charger, adding modern convenience to this classic estate setting. The partially finished lower level adds additional space, including a full bath, storage, and room for recreation, fitness, or hobbies. The outdoor setting is truly extraordinary. Expansive patios invite outdoor dining, grilling, lounging, and entertaining, while the in-ground pool with hot tub offers a resort-like experience at home. A charming duck pond and waterfall bring a sense of tranquility and escape, and an outdoor fountain hookup provides the opportunity to further enhance the serene landscape. The gated entry is thoughtfully wired with its own cellular network antenna for added reliability and convenience.