Historic House Listings

Greylock Mansion, Circa 1909. Over six acres in Pennsylvania. 16,000 square feet! $1,795,000

October 6, 2020

In 1909 this home was described as the “castle” in a local paper. It was built for steel magnate, Henry A. Laughlin. Greylock was built in 1909. It is located on 6.4 acres in Philadelphia, Pennsylvania. The stone used to build the home was quarried on the property. The home has marbled tile floors in the grand hall. The home overlooks the Wissahickon Valley. The property has a 4,500 square foot carriage house. Can’t imagine trying to heat this house! Eight bedrooms, eight bathrooms, and 16,581 square feet. $1,995,000 New price: $1,795,000

Contact Nigel Richards with Compass Pennsylvania: 267-603-3611

From the Zillow listing:


Once a decade a residence like this comes to the market. Greylock Mansion is a 25 room 16,500 sq ft, 8 bedroom, 4 full and 4 half bathroom mansion that sits on 7 acres of beautiful land bordering the 1,800 acres of Wissahickon Valley Park. The tree lined winding driveway leads to a grand circle and covered entrance of this stone masterpiece originally built in 1909 by steel magnate Henry A. Laughlin. The gorgeous exterior stone was quarried on site to construct this marvel. The main house stands on a wide terrace with floor footprint sizes between 5,000 and 3,290 square including the walk out basement floor which has usable desirable ceiling heights. The grand covered entrance opens to the gorgeous marble tiled floors of the grand hall of the house and gives a clear span view to the other side of the house and it’s giant entertaining patio. The ceiling height, grandeur of the marble tile, the white marble stairs, and the windows everywhere show the pure class of this building and it’s potential. Luxuriously large living and dining rooms flank the exterior patio overlooking the sprawling 3-4 acre front lawn and the views provide great site of the Wissahickon Valley. Many of these rooms still have original historic details that can and should be highlighted by her next owner. The nearby carriage house is approximately 4500 sq ft with garage parking and it has an abundance of possibilities from private office space to in-law residence to work shop or more. What is more good news is that the property taxes are reasonably low because of the conservancy easement on the property. Enjoy the tree lined abundant land with taxes equivalent to a home much smaller in size.


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