Grantley Mill

Grantley Mill is a watermill that has been converted into a timber store. It dates from the late 18th century and 19th century and is constructed from coursed squared gritstone with a graduated stone slate and corrugated asbestos roof.

On the west side, the building has two storeys and features three bays with an additional bay on the right. There is a board door in the fourth bay set beneath a wide arch with tooled voussoirs. To the left of the straight join with the main range, there is a small square window located under the eaves. The rest of this side is obscured by a 19th-century lean-to addition, which has double board doors beneath rock-faced rusticated voussoirs at the right (south) end. The gable copings and an end stack are present on the left side.

The rear (east side) of the mill has three storeys. It features a central doorway leading to the wheelhouse, which has a quoined surround and a tooled lintel. There is a board door on the far right and two windows between them; the left window provides ventilation to the wheelhouse, while the right window has a cast-iron frame with 25 small panes. On the first floor, there is a single iron-framed window above the wheelhouse door and a group of three windows to the right, with the central window being a taller sash window with glazing bars, flanked by fixed iron-framed windows. All windows have tooled sills and deep lintels.

On the left return, there is a central cast-iron framed window with 25 panes on each floor, featuring dressed stone sills and lintels. The right return has a small loading door on the first floor and a single-light window in the gable.

Inside, the lower floor, which is accessed from the east side, contains a wood and iron wheel that is still in place and is of the pitchback or overshot type. The ground floor, which is entered from the west side, includes a domestic room on the far left (north) that has a tooled stone surround for the fireplace, made of single stone blocks supporting the lintel.