21, High Street

No. 21 High Street is a house with shops that dates from the late 18th century and was refronted in the mid-19th century. The front upper storeys are made of painted brick in Flemish bond, while the rest of the building is rendered. It features a hipped slate roof and a red-brick chimney on the left side wall. The building has three storeys and a three-window range, with a single-light window in the centre and double-light windows on either side. The ground storey has horizontally-channelled rendering.

To the right, there are a pair of projecting segmental-arched openings with pilasters, keystones, and a top cornice that supports three scroll-buttresses. The left-hand opening has a 12-paned display window with an iron grille of intersecting circles below, while the right-hand opening features half-glazed double doors with flush lower panels. To the left, there are two original doorways and a canted bay window further left. The second-storey windows have cement voussoirs and keystones. Both upper storeys have barred sashes in concealed frames, with 6 over 6 panes in the second storey and 3 over 6 panes above. A prominent moulded wooden eaves cornice adds detail to the top of the building.

The return to Grenville Street is two storeys high due to a rise in ground level and has a three-window range. At the right-hand end, there is a late 18th-century round-arched doorway flanked by fluted Doric pilasters that support an entablature. The doorway features panelled reveals with the bottom panels flush and a fanlight with radial bars. The windows on this side have barred sashes in box-frames, with 8 over 8 panes in the centre of the ground storey, 4 over 8 panes to the left and centre of the second storey, and 3 over 6 panes to the right. The left-hand ground-storey window has mid-19th-century sashes with margin-panes and horns. The interior was not inspected, but at the rear of the shop, there is a round-arched doorway with a fanlight that has intersecting glazing-bars forming Gothic arches.