Beautifully maintained stone colonial in one of Penn Valley's most desirable neighborhoods! Lovingly overseen and expanded by the same owner for decades, this home is located on a rarely available corner lot and boasts many thoughtful touches and architectural details throughout, including deep-silled windows, custom millwork and built-ins, solid wood doors and enlarged closets and gathering spaces. From the professionally landscaped front yard (perfectly planned to bloom with seasons), a stone path leads to an elegant entry with handsome mahogany door. Inside, a center foyer connects to a sundrenched dining room with built-in corner cabinets, tasteful millwork and large bay window boasting scenic side yard views. From the dining room, French doors open to a sunny kitchen with granite countertops, stainless steel appliances and ample cabinetry. The kitchen also features a secondary (hidden) stairway for easy access to the home's upper level. From the kitchen, a rear hallway leads to an inviting den featuring an expansive window wall, gas fireplace and custom built-ins. A cozy sunroom with Pella architectural windows, a rear powder room and a lovely living room with wood-burning fireplace complete this well-designed, amenity-rich first floor. Upstairs, you'll find four generously sized bedrooms and three bathrooms (two ensuite!). The bright and airy primary suite includes his and her closets—each with organization systems—plus an ensuite bath with linen closet and glass shower door. This floor also features a large laundry closet and access to a three-room attic with potential for additional living space. Downstairs, the finished basement offers an open area for gathering and entertaining and a secondary laundry room with utility sink and extra storage. Outside, the sprawling yard with custom irrigation system, plus a private side terrace with stone retaining wall, a rear flagstone patio with grill, gazebo, two discreet storage sheds and an attached two-car garage (exterior access only). Located on a quiet, tree-lined street within walking distance to parks, restaurants, shopping, public transit and the charming village of Narberth, this home is a Main Line must-see! Zoned for award-winning Lower Merion School District and close to several premier private schools.