No.1 and Attached Railings

No.1 Park Street is a house, dating from around 1790 to 1793, with alterations from the 19th and 20th centuries, designed by John Palmer. It is constructed of limestone ashlar to the front and rubble to the rear, with a Welsh slate, double-pile, mansard roof, a coped party wall on the left, and ashlar stacks featuring early clay pots to the front left and right, and to the right rear. The house occupies a wedge-shaped site at the corner of Park Street and St James's Square, presenting a front width equivalent to two houses, and a rear elevation extending to the right only.

The building is three storeys high, with an attic and basement, and has a four-window front. The first floor features three 19th-century plate glass sash windows with horns in plain reveals, and simple balconettes to the right, and a triple sash window in a plain reveal with a flat arch lintel, a lowered stone sill, and an 19th-century wrought iron balconette. The second floor has four six/six-pane sash windows in plain reveals with stone sills and simple balconettes. The ground floor has two 19th-century plate glass sash windows in plain reveals with stone sills and simple balconettes, and two six-panel doors. The door to the right has six fielded panels and a vertical bead detail to the centre, with a brass doctor knocker in a moulded architrave with a flat shouldered surround and console brackets supporting a projecting moulded cornice. The door to the left has two glazed upper panels within a similar surround. The basement has two 19th-century plate glass sash windows in splayed reveals with a continuous stone sill to the right, and one similar window to the left. A crossover leads to a door with a part-glazed door featuring six flush panels and a large overlight, set within an ashlar infill. Stone steps lead to a 20th-century timber front to an extension in the area, with a paved top, while concrete steps with a 20th-century handrail lead up to a ground-floor door on the left. There are two double 20th-century dormers and a single dormer with a plate glass sash and moulded architrave. Architectural details include a band course above the ground floor, a frieze, a moulded eaves cornice, and a coped parapet. A lead downpipe runs down the centre of the front facade.

The rear elevation has two 19th-century casements, one blocked window to the centre, a 19th-century cast and wrought iron balcony with a zinc tent roof to the first floor, and three 19th-century two/two-pane horned sashes to the second floor. A 20th-century double dormer is also present. The interior was not inspected during the listing process.

Attached to the front are wrought iron railings and a gate with shaped tops on limestone bases. The property's significance is documented in Ison, W: The Georgian Buildings of Bath: Bath: 1980-: 175.