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      "street": "HAMMONDSWICK",
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      "town_city": "HARPENDEN",
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      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al5/hammondswick/10",
      "property_url": "https://openproperties.uk/al5/hammondswick/10"
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    {
      "url": "https://openproperties.uk/al5/hammondswick/10/8ae3c133-ded4-47ce-91ec-21b1a588d06b",
      "transaction_id": "8AE3C133-DED4-47CE-91EC-21B1A588D06B",
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      "date_of_transfer": "1999-04-12",
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      "duration": "F",
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      "paon": "10",
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      "street": "HAMMONDSWICK",
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      "town_city": "HARPENDEN",
      "district": "ST ALBANS",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al5/hammondswick/10",
      "property_url": "https://openproperties.uk/al5/hammondswick/10"
    },
    {
      "url": "https://openproperties.uk/al5/hammondswick/10/1cb5b27b-dbab-48af-9d1a-9c9a21c5244d",
      "transaction_id": "1CB5B27B-DBAB-48AF-9D1A-9C9A21C5244D",
      "price": 295000,
      "date_of_transfer": "1997-05-16",
      "postcode": "AL5 2NR",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "10",
      "saon": null,
      "street": "HAMMONDSWICK",
      "locality": "HARPENDEN",
      "town_city": "HARPENDEN",
      "district": "ST ALBANS",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al5/hammondswick/10",
      "property_url": "https://openproperties.uk/al5/hammondswick/10"
    }
  ],
  "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
    }
  ]
}