451 Cassatt Road offers the perfect blend of a prime Berwyn location, a thoughtfully designed floor plan, and an outdoor living experience that is as luxurious as it is serene. With an architecturally impressive addition and renovation completed in 2012, this home was reimagined to offer approximately 3,600 square feet of living space, featuring custom details and generous proportions in all of the rooms used most. Roofline changes, along with both interior and exterior wall removals, were part of the transformation, in addition to all new siding, windows, doors, kitchen, and bathrooms, as well as updated HVAC, plumbing, and electrical systems. The addition extends the rear of the home to create a spacious primary suite, an expanded kitchen and great room, and the highly sought-after combination of a main-level mudroom, laundry room, and powder room. Outdoor living was elevated with an expansive hardscaped patio and a large deck spanning the width of the home, a portion of which is covered and serves as a true extension of the living space, complete with a TV mount, speaker system, recessed lighting and ceiling fan. The yard is expansive and open, backing to the woods for a private and tranquil setting. The curb appeal is undeniable, with a classic brick and siding exterior, dormers, and a new driveway (2023). Enter through the formal foyer, flanked by a private office with custom built-ins and a formal dining room. A spacious living room with a gas fireplace and triple-pane doors opens to the covered deck, creating a seamless indoor-outdoor connection. The heart of the home features an expansive kitchen, breakfast area, and great room with vaulted ceilings and four skylights (replaced 2024) that illuminate this space. The gourmet kitchen offers a double GE Caf wall oven, 5-burner gas cooktop, island and peninsula seating, and customizations including pantry and lower cabinetry outfitted with full-extension pull-out storage and an adjustable drawer peg system. Architectural details such as archways, wood columns, and abundant natural and recessed lighting enhance the space. The adjacent great room is complemented by a butlers pantry with an icemaker, beverage refrigerator, and sink. An informal entrance leads to a well-designed mudroom with a powder room, double coat closet, and a dedicated laundry room with ample cabinetry, shelving, hooks, and a utility sink. Upstairs, the primary suite offers a tray ceiling with accent lighting, a triple-pane window with a custom window seat, a walk-in and additional closet, and a spacious ensuite bath with dual vanities, soaking tub, tile shower, water closet, and linen closet. Three additional bedrooms are generously sized with ample closet space and share a hall bath with a double vanity and tub shower. Storage is abundant, with a walk-up attic, storage over the garage, and added closets. The daylight basement features a walk-out to a bluestone patio and a convenient indoor/outdoor storage area ideal for gardening tools and seasonal items. Perfectly positioned on the sidewalk side of Cassatt Road, this home offers easy access to everything the Main Line has to offer, including King of Prussia, Routes 202 and 76, and the Berwyn and Daylesford train stations, and is within walking distance to award-winning T/E schools (Hillside Elementary, T/E MS, Conestoga HS). Dont miss this exceptional opportunity in the heart of Berwyn, where timeless design meets modern functionality and everyday living feels effortless. This is truly a home that needs to be experienced in person to fully appreciate the thoughtful design, scale, and seamless indoor-outdoor connection. Please see the Document Section for a list of improvements.