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      "address_path": "hp4/william-street/3",
      "property_url": "https://openproperties.uk/hp4/william-street/3"
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    {
      "url": "https://openproperties.uk/hp4/william-street/3/a2567f0b-14e1-494a-ba16-8e35d03d16b6",
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      "date_of_transfer": "1999-11-26",
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      "paon": "3",
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      "street": "WILLIAM STREET",
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      "town_city": "BERKHAMSTED",
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      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "hp4/william-street/3",
      "property_url": "https://openproperties.uk/hp4/william-street/3"
    },
    {
      "url": "https://openproperties.uk/hp4/william-street/3/71723df7-c434-42cf-9633-986ba9f5e3ad",
      "transaction_id": "71723DF7-C434-42CF-9633-986BA9F5E3AD",
      "price": 67000,
      "date_of_transfer": "1995-08-18",
      "postcode": "HP4 2EL",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "3",
      "saon": null,
      "street": "WILLIAM STREET",
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      "town_city": "BERKHAMSTED",
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      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "hp4/william-street/3",
      "property_url": "https://openproperties.uk/hp4/william-street/3"
    }
  ],
  "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
    }
  ]
}