Arundel Youth Centre Outhouse to South West Wall Bounding North Side of Courtyard and Railings Bounding West Side of Courtyard

The Arundel Youth Centre includes an outhouse to the southwest, a wall that bounds the north side of the courtyard, and railings that border the west side of the courtyard. This building, dated 1851, was formerly a poor house. It is constructed of nodular flint with red brick dressings and some grey headers in the window jambs. The structure features rubbed brick voussoirs and ashlar sills, along with late 19th-century brick chimneys. The front has a hipped slate roof, while the back has a pitched tile roof, which is likely older.

The building is three storeys tall, with brick string courses and a brick modillion cornice. It has five bays, with the central bay containing a planked door that is now obscured by a modern porch. All windows are segment-headed double-hung sashes with glazing bars, except for the central window on the first floor, which is modern. Four windows on the second floor are blocked. Inside, the joists run unsupported from wall to wall and appear to be cased in wooden planks, though it is unclear what this casing encloses. If the joists are made of iron and date from 1831, the building is of significant importance.

There is a two-storey brick extension to the north, made of red brick with a hipped slate roof. This extension has one planked door and one double-hung sash window with glazing bars above. The outhouse, which was formerly a bath house, is located to the southwest and is set at right angles to the front. It is built of nodular flint with red brick dressings, ashlar sills, and keystones, featuring a hipped and gabled tile roof. The modillion cornice is made of bricks arranged diagonally to create a zig-zag pattern. The outhouse is one storey with attics, containing one planked door and two segment-headed double-hung sash windows with glazing bars. Each of the two large gables has one narrow round-arched casement window.

The courtyard is bounded to the north by a nodular flint retaining wall with red brick dressings and to the west by iron railings topped with prominent ornamental finials, one of which is missing. There are no gates. The railings are set on a nodular flint retaining wall with brick chaining and ashlar coping, which, along with the retaining wall of the outhouse, borders the east side of Mount Pleasant.