What survives of the town's old gasworks is fragmentary, the kind of site that rewards careful looking rather than first impressions: a few iron troughs, some hoists, two heavily overgrown circular pits, and a pair of substantial gable-ended buildings that have outlasted their original purpose by several decades.

The complex dates from the late nineteenth century and was substantial enough in its working life to warrant mapping on the Ordnance Survey six-inch sheets of both 1902 and 1934. A gasworks of this period would have processed coal gas for local lighting and heating, with the various stages of production handled by separate structures. A photograph from 1953 shows a condenser, washer, and scrubber ranged along the southern external elevation of the main block, along with a lean-to structure housing the purification machinery, none of which survives today. The main building, oriented north to south, is distinguished by limestone quoins at the corners and a chimney on the north gable; a second, slightly taller structure attached to the east shares the same limestone detailing, with brick quoins used elsewhere and brick work around the window and door openings. The two circular gas holders, each roughly 9.7 metres in diameter, are now defined mainly by earthen banks with a retained inner wall still standing to around 1.5 metres. According to local information, the works closed in the 1950s and the site was subsequently converted into the Midleton Foundry and Engineering Works, which continued in operation until relatively recently, layering one industrial history over another.

The remains of a small office building sit adjacent to the south of the complex, and a one-storey workshop to the west stands between the two gas holder sites. The entrance gates are positioned at the eastern end of the southern boundary wall, giving some sense of how the original site was organised and accessed.