The site was added to the National Register of Historic Places on May 22, 1978, for its significance in military and social history.

[3] Lord Stirling acquired the land from his father in 1761 and constructed the manor complex in 1763.

At the time of its nomination to the National Register, the only structures remaining from the original 1763 construction were the cisterns, slave quarters, various outbuildings, and the foundation of the mansion.

[3] The manor site is currently occupied by a 1920s Montgomery Ward mail order house that was situated on the foundation of the original structure.

An archaeological excavation sponsored by Somerset County Parks unearthed thousands artifacts dating from Lord Stirling's occupation through the 20th century.