Sir Edward Denny was the lessor of Ballygarran at the time of Griffith's Valuation, when the property, valued at £9 10s, was vacant. In the 1830s, the Ordnance Survey Field Name Books mention Ballygarran House as the residence of William Hilliard by whose family it had been built in the eighteenth century. It is described as " an oblong low thatched house". Bary notes that it was a house frequently associated with the Hilliard and later the Fitzmaurice families. It was demolished in the mid-twentieth century.