Rear of Nos. 30-31 Stall Street (Formerly Nos. 1 and 2 Beau Street), front of Nos. 30-31 not included

The building at the rear of Nos. 30-31 Stall Street, formerly known as Nos. 1 and 2 Beau Street, is a Grade II listed structure. It is constructed from limestone ashlar, with the ground floor painted. The roof, which is not visible, features ashlar stacks without pots at either end.

This building has a single and double depth plan and is clearly part of the same block as Nos. 30-33 Stall Street. It stands three storeys high and has three windows across its front. The ground floor has been significantly altered, featuring six small arched windows arranged in pairs, with single panes; one of these windows serves as a fanlight above a plain door. The ground floor lacks other notable features due to the removal of a previous public house frontage.

Above the ground floor, the upper levels have sill bands and six over six pane sash windows set in plain reveals. There are decorative elements such as a listel, cornice, and parapet. The stonework on the top floor is toothed on the left side, indicating a planned extension to the terrace that was never constructed due to the development of the adjacent St Catherine's Hospital in 1829. The interior of the building has not been inspected.