[{"pk":"669848","application_number":"2025/5791/L","development_address":"23 Oakhill Avenue London NW3 7RD","development_description":"Demolition of the existing conservatory and ground-floor extensions associated with excavation works at lower ground floor level for a new two storey extension; installation of external staircase enclosure all to the rear lower and ground floor levels including installation of glazed balustrade for a new terrace area at ground floor level all to the rear elevation;  internal alterations across all existing floors, including the creation of a new loft conversion with rooflights and a new staircase; installation of rooflights to the rear roofslope, refurbish and redecorate the existing historic windows, repointing of the brickwork, reinstate of the fireplaces in the principal rooms; fenestration alterations to the rear and flank elevation.","valid_from_date":"2025-12-17T00:00:00.000","registered_date":"2025-12-22T00:00:00.000","registered_in_last_7_working_days":"No","registered_in_last_28_working_days":"No","earliest_decision_date":"2026-01-25T00:00:00.000","system_status":"Registered","system_status_change_date":"2025-12-22T00:00:00.000","applicant_name":"Mr and Mrs Paul and Penelope Brown","ward":"Frognal","conservation_areas":"Redington Frognal;Redington Frognal","neighbourhood_areas":"Redington and Frognal;Redington and Frognal","case_officer":"Obote Hope","case_officer_team":"Planning Solutions Team","responsibility_type":"PlanningApplication","comment":"https://planningrecords.camden.gov.uk/Northgate/PlanningExplorer/PLComments.aspx?pk=669848","full_application":{"url":"https://planningrecords.camden.gov.uk/NECSWS/Redirection/redirect.aspx?linkid=EXDC&PARAM0=669848"},"application_type":"Listed Building Consent","easting":"525663","northing":"185630","longitude":"-0.188775","latitude":"51.55557","spatial_accuracy":"Plotted by Camden Officer","last_uploaded":"2026-11-07T02:31:50.000","location":{"type":"Point","coordinates":[-0.188775,51.55557]},"socrata_id":"13615","organisation_uri":{"url":"http://opendatacommunities.org/id/london-borough-council/camden"}}]