{"geometry":{"type":"MultiPolygon","coordinates":[[[[-0.059825,51.516368],[-0.059974,51.516354],[-0.059961,51.516292],[-0.059563,51.516327],[-0.059572,51.516388],[-0.059825,51.516368]]]]},"type":"Feature","properties":{"entry-date":"2026-07-28","start-date":"1973-09-27","end-date":"","entity":42131625,"name":"39-49, WALDEN STREET E1","dataset":"listed-building-outline","typology":"geography","reference":"LB_611","prefix":"listed-building-outline","organisation-entity":350,"quality":"authoritative"}}