Built not out of commercial ambition but as a Famine Relief Project, it belongs to that particular category of mid-nineteenth-century Irish structures whose origins lie in crisis rather than industry. The building was later converted to serve as a creamery, meaning the same walls witnessed two entirely different economic lives, one concerned with processing flax into linen fibre, the other with dairy production.

The structure is rectangular, running roughly 24.45 metres north to south and 6.65 metres east to west, and shows evidence of two distinct phases of construction. Its most striking surviving feature is the overshot iron waterwheel, housed in a wheel pit along the north gable. Six metres in diameter and just over a metre wide, an overshot wheel is driven by water delivered from above, allowing gravity to do most of the mechanical work. Water was carried to the wheel along a launder, a wooden or stone channel, supported here by a high stone wall, the remains of which are still visible. The fact that an iron wheel of this scale survives at all, even in a ruined state, is relatively unusual; iron wheels replaced earlier timber ones during the nineteenth century, and many have since been lost to salvage or decay.

The mill sits within the grounds of Corran House, so access may be limited depending on the condition of the site and land ownership. The wheel pit along the north gable and the launder wall are the features most worth seeking out, giving a tangible sense of how water was engineered across the landscape to drive the machinery inside.