The seat of a branch of the Hoare family in the 18th and 19th centuries. Occupied by E. Hoare in 1814 but by 1837 leased to William Letchfield or Lichfield. He occupied the house in the early 1850s when it was valued at £25. Richard Martin of Factory Hill owned 506 acres in county Cork in the 1870s. A larger property, known as Dunsland House, occupies the site of Factory Hill on the 25-inch Ordnance Survey map of the 1890s. This latter property was later the residence of Joseph Pike and was burnt in August 1920 during the War of Independence.