{"entry-date":"2026-09-30","start-date":"1987-12-01","end-date":"","entity":31678277,"name":"20, UPPER BROOK STREET W1","dataset":"listed-building","typology":"geography","reference":"1221672","prefix":"listed-building","organisation-entity":16,"geometry":"","point":"POINT (-0.155818 51.511426)","quality":"authoritative","documentation-url":"https://historicengland.org.uk/listing/the-list/list-entry/1221672","listed-building-grade":"II"}