Great Sutton Street began as a three-storey traditional terrace house with a commercial unit on the ground and light industrial units above. In addition to being a locally listed building, the proposed change of use required planning consent under the Town and County Planning Acts.  The application is made in connection with the erection of a rear and roof extensions as well as minor external restoration work to the existing retail façade.

The construction of a rear extension will be setback from the side to form a piano nobile with a new terrace space accessible from the first floor unit.  The new roof extension is conceived as a lightweight timber structure. The roof annex designed in keeping with the industrial quality of the area will occupy the top floors of the building. The entire roof extension is to be set back from the existing elevation line to form a new terrace space towards Great Sutton Street.