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      "address_path": "al4/colney-heath-lane/7",
      "property_url": "https://openproperties.uk/al4/colney-heath-lane/7"
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      "url": "https://openproperties.uk/al4/colney-heath-lane/7/4761c244-f927-4045-b17d-f30afef47db7",
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      "town_city": "ST. ALBANS",
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      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al4/colney-heath-lane/7",
      "property_url": "https://openproperties.uk/al4/colney-heath-lane/7"
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    {
      "url": "https://openproperties.uk/al4/colney-heath-lane/7/cf1c4179-2c84-46a7-b7a5-a370f44285a9",
      "transaction_id": "CF1C4179-2C84-46A7-B7A5-A370F44285A9",
      "price": 132000,
      "date_of_transfer": "1999-04-23",
      "postcode": "AL4 0SY",
      "property_type": "S",
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      "new_build": false,
      "duration": "F",
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      "paon": "7",
      "saon": null,
      "street": "COLNEY HEATH LANE",
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      "town_city": "ST. ALBANS",
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      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al4/colney-heath-lane/7",
      "property_url": "https://openproperties.uk/al4/colney-heath-lane/7"
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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
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  ]
}