{"entry-date":"2026-08-11","start-date":"1975-05-01","end-date":"","entity":31700872,"name":"MAINSTONE HOUSE","dataset":"listed-building","typology":"geography","reference":"1244396","prefix":"listed-building","organisation-entity":16,"geometry":"","point":"POINT (-4.05065 50.383235)","quality":"some","documentation-url":"https://historicengland.org.uk/listing/the-list/list-entry/1244396","listed-building-grade":"II"}