17, 19 and 21, Mill Farm Drive

This is a house with a complex building history, demonstrating development across the 17th and 18th centuries. Initially a range dating to the early 17th century, part of which is now ruinous, it was later extended in the mid-17th century. A principal house was then constructed in the late 18th century. The building is built of hammer-dressed stone with stone slate roofs and brick stacks.

The main house presents a four-bay facade. A doorway is centrally positioned with a surrounding architrave, leading to a six-panelled door and overlight. A window above this entrance also has an architrave. The remaining bays contain 12-pane sash windows with lintels and projecting sills. A coped gable is visible on the left-hand side, and two ridge stacks are present. Attached to the rear is a two-bay wing at right angles, featuring an outshut to the left. This outshut has a doorway with monolithic jambs and overlight. Above and to the right of the outshut are sash windows with raised, plain surrounds. A coped gable with kneelers is present on this wing. The right-hand return of this wing exhibits an external, truncated stone stack. The left-hand return of the main house has a doorway with tie-stone jambs.

The earlier range, set at right angles to the main front and to the right of it, comprises two builds. The left-hand build dates to the late 17th century. To the right is an earlier 17th century two-cell house. A distinctive feature of this part is a full-height canted bay window with a three-light double-chamfered mullioned window, flanked by single lights, all under a hoodmould with straight returns on the flanking wall. This is comparable to a window found at No. 55 School Hill nearby. This part of the building lacks a roof. A late 17th century two-cell house sits at the junction of the two ranges, featuring quoins, a central doorway with composite jambs, a stop-chamfered surround, and three-light double-chamfered mullioned windows on both floors. Coped gables with kneelers and stacks are visible. A single bay, also with quoins and a coped gable, is attached at a right angle to the right-hand return wall, and includes a blocked Tudor-arched doorway.

The interior of the main house contains windows with panelled surrounds, a stair-hall with a raised-and-fielded panelled dado, and an open-well stair; the stair is damaged, retaining remains of finely-turned balusters and a wreathed and ramped handrail. The early 17th century house includes a Tudor-arched fireplace, stop-chamfered spine beams, and remains of a 17th century plaster frieze.