The cottage appears on the 1840 Tithe map, and was probably a quarryworker's dwelling, as were most of the cottages built in Cilgwyn (NPRN 422652) in the early 19th century. 'Its attached cow house indicates that its occupants supplemented their income by subsistence agriculture.' Parc cottage is a single storey cottage with a two room plan and lean-to porches added later. It consisted of 'roughly coursed rubblestone with large granite blocks as foundations; slate roof with coped verges; integral end stack to right, ridge stack at junction with cowhouse and another to left actually in cowhouse, all of squared blocks with slate drips; left porch (giving access to house part) of red brick, the right of slate stone. 4-paned sashes on either side of stone porch and another window and door to left of brick porch in right part of cowhouse; left part of cowhouse has doorway converted to window and later doorway in gable end.' It is Grade II listed because it is a 'largely unaltered smallholder's cottage, set within its own field system and typical of the small vernacular buildings of the region; forms part of an historically important settlement pattern associated with the early slate quarrying industry in this area.'
Source: CADW listed building (reference number 22897)