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      "property_url": "https://openproperties.uk/al9/stag-green-avenue/19"
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      "url": "https://openproperties.uk/al9/stag-green-avenue/19/80b0c3c1-a3ef-4634-b7f5-5b36a0fa047e",
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      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al9/stag-green-avenue/19",
      "property_url": "https://openproperties.uk/al9/stag-green-avenue/19"
    },
    {
      "url": "https://openproperties.uk/al9/stag-green-avenue/19/e4d05fcb-9aae-4ff0-ad0f-91e87743e82e",
      "transaction_id": "E4D05FCB-9AAE-4FF0-AD0F-91E87743E82E",
      "price": 126000,
      "date_of_transfer": "1996-08-28",
      "postcode": "AL9 5EB",
      "property_type": "T",
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      "new_build": false,
      "duration": "L",
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      "paon": "19",
      "saon": null,
      "street": "STAG GREEN AVENUE",
      "locality": "HATFIELD",
      "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": "al9/stag-green-avenue/19",
      "property_url": "https://openproperties.uk/al9/stag-green-avenue/19"
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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
    }
  ]
}