Numbers 18 and 18a Including Attached Privy House

Numbers 18 and 18A, including the attached privy house, are a coach house, stables, and privy dating from the early 18th century, with alterations around 1975. The building is now used as flats above garages. It is constructed of roughcast sandstone rubble with ashlar dressings to the front elevation and roughly coursed rubble at the rear. The roof is covered in stone slate, and there is a brick gable stack on the right-hand side.

The front elevation is almost symmetrical, with two storeys and six bays. A sill band runs across the first floor. The ground floor features a pair of coach house doorways at the centre, set under semi-elliptical moulded arches with prominent keystones rising from stout ashlar piers. These are flanked on either side by stable doorways under plain lintels; the stable door to the left has been widened. To the left of this is a narrow doorway with a moulded architrave, a door with six raised and fielded panels, and a recent fanlight. On the far right is a window with a raised plain surround. The first floor has two round-headed windows, originally circular pitching eyes, with moulded architraves, keystones, and wedge-shaped impost blocks. These are flanked by two windows with raised plain surrounds, and all the windows have recent eight-pane sashes.

To the rear, set into the corner of the garden wall of Number 16, is a large 18th-century privy house built of handmade brick with some ashlar dressings. The convex facade appears to have two storeys and three bays with a central doorway with a moulded architrave and panelled door, narrow vertical windows on either side, and three blind lunettes above. The tall, single-storey interior contains seven privy seats, including a low child's seat in the angle. The building was originally constructed as the coach house, stables, and privy for Castle Park House, Number 20 Castle Park.