{
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      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "en6/heronfield/16",
      "property_url": "https://openproperties.uk/en6/heronfield/16"
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    {
      "url": "https://openproperties.uk/en6/heronfield/16/f303a415-c5c4-4ce8-aff8-7efe56f1f6d3",
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      "date_of_transfer": "2005-11-11",
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      "street": "HERONFIELD",
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      "town_city": "POTTERS BAR",
      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "en6/heronfield/16",
      "property_url": "https://openproperties.uk/en6/heronfield/16"
    },
    {
      "url": "https://openproperties.uk/en6/heronfield/16/3871df77-b09f-4e10-9e19-7c6610f4203c",
      "transaction_id": "3871DF77-B09F-4E10-9E19-7C6610F4203C",
      "price": 279950,
      "date_of_transfer": "2005-06-17",
      "postcode": "EN6 1JA",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "16",
      "saon": null,
      "street": "HERONFIELD",
      "locality": "POTTERS BAR",
      "town_city": "POTTERS BAR",
      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "en6/heronfield/16",
      "property_url": "https://openproperties.uk/en6/heronfield/16"
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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
    }
  ]
}