1, Coinagehall Street

No. 1 Coinagehall Street is a building in Helston that originally consisted of two townhouses, which were later remodeled into a house with a shop. It dates from the 18th century, with part on the right remodeled in the early 19th century to match the left-hand section, which is also early 19th century. The exterior features stucco over what is likely mostly rubble, with decorative elements including moulded architraves, a first-floor sill string, second-floor sill brackets, and end pilasters above the shop front on the right. The left side has a low-pitched scantle slate roof, while the right side has a steep half-hipped asbestos slate roof. There is a stuccoed stack on the right and cast-iron ogee gutters over the moulded eaves.

The building has a shallow-depth plan with three storeys on the left and two storeys plus an attic on the right, featuring a three-window plus one-window range. The early 19th-century sash windows have glazing bars, except for the lower halves of the first-floor sashes. The central sash is part of a group of sashes framed by stucco pilasters with consoles and a moulded hood, flanked by keyed segmental-arched architraves. On the right, there is a small-paned slightly bowed oriel window with sidelights and a moulded entablature above a late 19th-century three-light shop front with a canted return light, all featuring elliptical heads. Other lights have had their intermediate mullions removed, but slender surviving mullions with Ionic caps remain. The shop front has end pilasters and a moulded entablature with a fascia. The central doorway is pilastered and has an altered panelled door, with a carriage entrance on the left featuring 20th-century doors, and a plate-glass shop window to the right of the doorway. The interior has not been inspected.