Steeped in the rich tapestry of Chester County history, the Mansel Passmore House offers a rare opportunity to own a piece of the past, thoughtfully reimagined for a sophisticated modern lifestyle. Originally constructed circa 1830 and listed on the National Register of Historic Places, this landmark residence anchors the storied Glen Rose Historic District. Over nearly two centuries, the home has undergone a series of masterful expansions, evolving into an estate that harmonizes its 19th-century soul with 21st-century luxury. The journey begins at the circular drive that leads to the original stone structure. Inside, a formal Foyer warmed by a fireplace sets an inviting tone, flanked by a stately Living Room also anchored by a wood-burning hearth. The Main Level flows effortlessly into a private Den-featuring the home's third fireplace-before opening into the sun-drenched heart of the home. The expansive Kitchen is a chef's dream, centered around an oversized island with butcher block counters and a double sink. The professional gas range is where you will find the chef, while the sitting area and double french doors leading to the deck make this room the heart of the home. This airy space transitions seamlessly to a Breakfast Room with rustic exposed beams and custom built-in seating, while a dedicated prep area with stone counters and double wall ovens ensures the home is ready for large-scale entertaining. A Powder Room and Mud Room complete this level. Retreating to the Second Floor, the Primary Suite serves as a private sanctuary flooded with southern light. This retreat features a reading nook, a private deck accessed through French doors, and a spa-like Full Bath with a soaking tub and separate shower, both offering serene views of the grounds. Two additional well-appointed Bedrooms, an attached Study, an additional Full Bath and a convenient second-floor Laundry complete this level. The Third Floor offers a versatile escape, featuring an expansive Office drenched with natural light from a west-facing wall of windows, alongside a fourth Bedroom and a Full Bath. The Lower Level extends the living space further, housing a comfortable Family Room that walks out to the rear yard, a fourth Full Bath, and ample storage. Beyond the main residence, the 5+ acre property is a masterclass in outdoor living. Multiple decks and terraces overlook mature trees, professional hardscaping, and protected neighboring lands. Adjacent to the main residence, the detached three-bay garage is a destination unto itself, with a charming Studio above that houses a fifth Bedroom and Full Bath-perfect for guests or a creative retreat. Attached to the Garage is the Bank Barn, complete with concrete flooring, running water, full electrical service and a half bath. This space is currently used as a professional-grade workshop, but is ideal for a multitude of uses. An Office with a vaulted ceiling and exposed beams attaches the Bank Barn and the Garage. The property is supported by a generator which powers a significant portion of the property. The sq. footage listed in all documentation is estimated and should be confirmed by the Buyer. Of note, a portion of this property (2+/- acres) is under Brandywine Conservancy Easement. Accessory structures are permitted, within the impervious limitations, on review and written approval of plans by the conservancy (paragraph 5 of the Easement provides detailed requirements for approval). Impervious limitations remain at 2.5% of the acreage (2,339 sq.ft). Complete with the original Springhouse and an equipment shed, the Mansel Passmore House is a testament to timeless architecture, offering a lifestyle of quiet elegance and historical significance.