9 and 10, Castle Street

Nos. 9 and 10 Castle Street are a pair of cottages dating from the early 18th century, with alterations made in the 19th and 20th centuries. They are constructed of red brick in Flemish bond, with stucco render on the front of No. 9 and unpainted brick on No. 10. The cottages have plain-tile roofs and brick lateral stacks, featuring one-unit plans, two storeys, and an attic. The front has a two-window range, with a six-panel, part-glazed door to the far left (No. 10) and a six-panel door to the right of centre (No. 9), both with overlights and panelled reveals, topped with small straight hoods on shaped brackets.

The cottages have canted bay windows; the right bay has 19th-century horned sash windows, while the left bay features a 24-pane sash window at the front and 12-pane sashes on the sides. There is a tripartite sash window on the first floor left, framed by a rendered rusticated surround and key block. No. 10 has a cellar window at the base of its bay window, and both cottages have a first-floor storey band, rusticated quoins at either end of No. 10's front, and coped parapets and gables. Notably, No. 10 has a pediment gable with a lunette window at the rear, a distinctive feature it shares with the now-demolished Red Buildings of 1725, which were built by Earl Cobham after a fire in the town.

Inside, the cottages feature stop-chamfered spine beams, a cellar in No. 10, and common rafter roofs with prominent carpenter's marks in the form of Roman numerals, along with one tier of clasped purlins and wind braces in the front bay. Nos. 9 and 10 are part of a group of three similar cottages, including No. 8, likely built around the same time as the Red Buildings constructed in 1725 following the fire.