10 South Street, Boston

This is a late medieval building, significantly altered in the 19th and 20th centuries, situated on South Street, Boston.

The building is rectangular and three storeys high, with a west elevation of five bays. It is constructed of red brick with stone and stucco dressings.

The west elevation features a prominent five-bay, crow-stepped gable. The base of the gable is ramped with stone scrolls, and the top is crowned with a pinnacle featuring a medieval carved heraldic beast, holding a cartouche. Sill bands divide the first and second floors, and each bay is marked by a narrow pointed pilaster. Double doors with arched heads and overlights are located at each end of the ground floor, with a small shop window in the centre. The first and second floor windows are pointed Gothic arches with stone hoodmoulds, beneath which are stucco panels bearing shields. The first floor features three double casement windows alternating with two single-paned windows. The second floor has a central double casement flanked by two single-paned windows of diminishing height. The paired windows on the first and second floors at the south end have leaded panes and stained-glass margins; these windows illuminate the staircase.

The north elevation is of painted stone, with stone quoins extending to the first floor and the return of the east gable. A 14th-century doorway with a carved hood-mould, featuring one worn stop to the west, is located towards the east end at ground floor level. To the west of this door are two blocked openings with brick segmental arches. The east elevation has a single window under the gable and three regularly spaced windows to the first floor. Below the south window on the east elevation is a blocked opening with a timber lintel.

The 14th-century north door opens directly onto a ground-floor room. The east wall of this room contains a low stone arcade with wide-chamfered arches, octagonal piers with moulded capitals, and carved corbels within the spandrels of the arches. The south entrance opens onto a small lobby and staircase, leading to a store room. An arcade extends along the south wall of both levels, featuring three chamfered arches, slender octagonal piers, and carved corbels. A staircase, contemporary with the late 19th or early 20th century remodelling, is lit by the lead-paned windows. The south wall of the staircase is uneven and undulating, suggesting earlier stonework, possibly belonging to a medieval friary or a subsequent building. To the north of the staircase is a large club room on the first floor, and various smaller service rooms and offices on both floors, which lack historic features.