{
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  "district": "WELWYN HATFIELD",
  "county": "HERTFORDSHIRE",
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  "postcodes": [
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      "duration": "L",
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      "paon": "36",
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      "town_city": "HATFIELD",
      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al10/northdown-road/36",
      "property_url": "https://openproperties.uk/al10/northdown-road/36"
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    {
      "url": "https://openproperties.uk/al10/northdown-road/36/ee906a28-1057-4a76-a959-2bf17b4e2c61",
      "transaction_id": "EE906A28-1057-4A76-A959-2BF17B4E2C61",
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      "date_of_transfer": "1999-12-21",
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      "duration": "L",
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      "paon": "36",
      "saon": null,
      "street": "NORTHDOWN ROAD",
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      "town_city": "HATFIELD",
      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al10/northdown-road/36",
      "property_url": "https://openproperties.uk/al10/northdown-road/36"
    },
    {
      "url": "https://openproperties.uk/al10/northdown-road/36/eff13fe3-212b-4dbd-b204-1734f44d15b0",
      "transaction_id": "EFF13FE3-212B-4DBD-B204-1734F44D15B0",
      "price": 40000,
      "date_of_transfer": "1996-08-23",
      "postcode": "AL10 8SL",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "36",
      "saon": null,
      "street": "NORTHDOWN ROAD",
      "locality": null,
      "town_city": "HATFIELD",
      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al10/northdown-road/36",
      "property_url": "https://openproperties.uk/al10/northdown-road/36"
    }
  ],
  "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
    }
  ]
}