Set back from Bryn Mawr Avenue and accessed via a private drive in coveted Lower Merion Township, 829 Bryn Mawr Avenue is a beautifully renovated 4-bedroom, 2.5-bath stone retreat offering the perfect balance of privacy and convenience in Penn Valley. Nestled on nearly of an acre surrounded by mature trees and lush greenery, this home feels tucked away in nature - yet remains walkable to Narberth and local favorites. The classic Main Line stone fa ade, slate-style roof, and softly glowing windows create an inviting first impression. A covered flagstone front porch welcomes you home - an ideal setting for morning coffee or greeting guests - while the elevated positioning enhances both privacy and architectural presence. Upon entering, you are greeted by a gracious foyer with the formal dining room to the left and an elegant living room with a fireplace to the right, creating a timeless and balanced layout. The dining room is framed by a large picture window overlooking the greenery, while the formal living room offers warm hardwood floors and a beautiful fireplace focal point - perfect for intimate gatherings or quiet evenings at home. Flowing seamlessly from the dining room, the fully renovated chef's kitchen serves as the heart of the home. Featuring stunning white marble backsplashes and a dramatic wraparound island that comfortably seats eight, the kitchen opens to a spacious den with gas fireplace and main living area, creating an effortless connection between cooking, dining, and everyday living. Recessed lighting, generous counter space, and views of the surrounding trees make this space both functional and inviting. The kitchen also provides direct access to the expansive stone patio, blending indoor and outdoor living beautifully. A beautifully remodeled powder room and a convenient first-floor laundry area complete this level. The terraced backyard feels like a private sanctuary with a large shed, anchored by a spacious stone patio perfect outdoor dining, or simply enjoying the peaceful, wooded setting. Upstairs, the luxurious primary suite has been completely transformed into a spa-like retreat. The newly remodeled bathroom showcases exquisite Italian marble finishes, a floating vanity, LED mirror, and refined detailing rarely found at this price point. Additional bedrooms are generously sized and enhanced with newly refinished floors and plush carpeting, while two staircases and a wide upstairs hallway create easy, natural flow throughout the home. A standout feature of the property is the detached two-car garage carriage house with a fully renovated studio above. Finished with new flooring, recessed lighting, and a mini-split system for year-round comfort, this flexible space is ideal as a private home office, in-law or au pair suite, fitness studio, or creative workspace. Extensive recent improvements include a complete kitchen renovation in 2025, a primary bath remodel with Italian marble finishes, a full carriage house studio renovation in 2025, powder room remodeling with marble tile, whole-house repainting, upstairs floor refinishing and new carpeting, and the installation of a new LG washer and dryer. The slate-style roof offers over 20 years of remaining life, and the home is heated by an efficient central hot water radiator system and cooled with dual-zone air conditioning. Located in a rare Lower Merion School District high school choice area - allowing attendance at either Harriton or Lower Merion High School, both National Blue Ribbon Schools of Excellence - with school bus stops at the end of the driveway for elementary through high school. The finished lower level provides additional flexible living space, ideal for a media room, playroom, gym, or recreation area. Private yet connected, timeless yet thoughtfully renovated. At 829 Bryn Mawr Avenue you'll enjoy the perfect balance of privacy and convenience in one of Penn Valley's most desirable settings.