At the time of Griffiths Valuation in the early 1850s, Coolamber was held in fee by Major Blackall, when it was valued at £75. It is labelled "Cloonshannagh House" on the 1st edition OS Map but as "Coolamber Manor" on the later editions. The National Built Heritage Service suggests it was built c.1830 and significantly extended c.1880. It is still extant, having previously functioned as a rehabilitation facility. Extensive estate architecture also survives.
