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      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
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      "address_path": "n3/ballards-lane/hartley-house/flat-1",
      "property_url": "https://openproperties.uk/n3/ballards-lane/hartley-house/flat-1"
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      "url": "https://openproperties.uk/n3/ballards-lane/hartley-house/flat-1/5e00a586-0ded-4b5e-8282-0c5f6ef5c522",
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      "date_of_transfer": "2000-11-01",
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      "paon": "HARTLEY HOUSE",
      "saon": "FLAT 1",
      "street": "BALLARDS LANE",
      "locality": null,
      "town_city": "LONDON",
      "district": "BARNET",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "n3/ballards-lane/hartley-house/flat-1",
      "property_url": "https://openproperties.uk/n3/ballards-lane/hartley-house/flat-1"
    },
    {
      "url": "https://openproperties.uk/n3/ballards-lane/hartley-house/flat-1/8916386e-b5a9-4b22-81ef-e24275ee061f",
      "transaction_id": "8916386E-B5A9-4B22-81EF-E24275EE061F",
      "price": 79000,
      "date_of_transfer": "1996-12-06",
      "postcode": "N3 1NF",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "HARTLEY HOUSE",
      "saon": "FLAT 1",
      "street": "BALLARDS LANE",
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      "town_city": "LONDON",
      "district": "BARNET",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "n3/ballards-lane/hartley-house/flat-1",
      "property_url": "https://openproperties.uk/n3/ballards-lane/hartley-house/flat-1"
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  ],
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains HM Land Registry data © Crown copyright and database right. This data is licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right. Postcode locations are Code-Point Open centroids: they locate the postcode, not an individual building.",
  "provenance": [
    {
      "source": "HM Land Registry Price Paid Data",
      "source_url": "https://www.gov.uk/government/statistical-data-sets/price-paid-data-downloads",
      "retrieved_at": "2026-07-09T18:56:26.350736+00:00"
    },
    {
      "source": "OS Code-Point Open",
      "source_url": "https://osdatahub.os.uk/downloads/open/CodePointOpen",
      "retrieved_at": null
    }
  ]
}