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      "address_path": "al5/park-mount/2a",
      "property_url": "https://openproperties.uk/al5/park-mount/2a"
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      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al5/park-mount/2a",
      "property_url": "https://openproperties.uk/al5/park-mount/2a"
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    {
      "url": "https://openproperties.uk/al5/park-mount/2a/f99031bc-81b3-43f4-8787-04f28adfed5f",
      "transaction_id": "F99031BC-81B3-43F4-8787-04F28ADFED5F",
      "price": 249950,
      "date_of_transfer": "2001-08-24",
      "postcode": "AL5 3AR",
      "property_type": "S",
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      "duration": "F",
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      "paon": "2A",
      "saon": null,
      "street": "PARK MOUNT",
      "locality": "HARPENDEN",
      "town_city": "HARPENDEN",
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      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al5/park-mount/2a",
      "property_url": "https://openproperties.uk/al5/park-mount/2a"
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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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  ]
}