Low attached extensions at Castle Hill Farm

Castle Hill Farm features a three-storey brick house that dates back to the 1820s, with later raising and extensions in the mid-19th century. The southeast garden front was originally the main entrance and is symmetrical with three bays, topped by a shallow-pitched slate roof that has slightly overhanging eaves. The central entrance is recessed and includes a plain late 19th-century conservatory addition, which has mostly been renewed. It features 2-pane double doors and a plain rectangular skylight. On the ground floor, there are flanking canted wooden 8-pane bay windows with flat roofs. The first and second floors have 4-pane recessed sash windows, with the second-floor windows being narrower and positioned under the eaves. The windows have projecting stone cills and painted brick voussoirs.

The northwest facade, which faces the brewery yard, has asymmetrical fenestration with 12 and 16-pane recessed sashes on the first and second floors, while the ground floor has modern windows. This facade also features stone cills and rendered voussoirs. A central two-storey porch addition from the mid-19th century is located on the south side, with a chamfered entrance and a moulded label. The modern door leads to an inner entrance that retains the original six-panel Regency door, with the upper four panels being fielded, and a 15-pane rectangular fan-light above.

To the southwest, there are mid-19th-century single-storey additions that are flush with the house, set behind a low brick wall and covered by a continuous slate roof. These additions include a modern window on the left, followed by a 16-pane recessed sash window, a further 12-pane window, and a plain entrance with a cambered head.

Adjacent to this, there is a contemporary single-storey lodge or office with a shallow-pitched slate roof and decorative ridge tiles. This structure features a 16-light sash window on the south face and a recessed entrance on the west face with a cambered head and a plain boarded door. There is also a plain shuttered window to the left.

To the south and west of the lodge, there are a pair of red brick gate piers topped with moulded yellow brick caps and stone hinge-blocks, leading to later gates. The southern gate originally served the house, while the western gate provides access to the brewery yard. Next to the right-hand gate pier of the southern gates is a garden wall approximately 100 feet long and 10 feet high, constructed of rubble on the south side and brick-faced on the north side.