The Return of Untenanted Lands  records a mansion house valued at £25 at Killareeny, parish of Aughrim, the property of George K. Mahon. This property was built in the late nineteenth century and is labelled Killareeny House on the 25-inch Ordnance Map of the 1890s. Rev. John Crawford was the lessor of the townland at the time of Griffith's Valuation. The original house is not extant now.