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      "ppd_category_type": "A",
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      "address_path": "al7/mill-green-road/79",
      "property_url": "https://openproperties.uk/al7/mill-green-road/79"
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    {
      "url": "https://openproperties.uk/al7/mill-green-road/79/e8d9fca5-792e-4ba6-a68e-05de310c2842",
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      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al7/mill-green-road/79",
      "property_url": "https://openproperties.uk/al7/mill-green-road/79"
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    {
      "url": "https://openproperties.uk/al7/mill-green-road/79/055f5f46-cbe3-40e7-ba16-5ff83964b262",
      "transaction_id": "055F5F46-CBE3-40E7-BA16-5FF83964B262",
      "price": 75000,
      "date_of_transfer": "1997-10-24",
      "postcode": "AL7 3UX",
      "property_type": "T",
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      "new_build": false,
      "duration": "F",
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      "paon": "79",
      "saon": null,
      "street": "MILL GREEN ROAD",
      "locality": "WELWYN GARDEN CITY",
      "town_city": "WELWYN GARDEN CITY",
      "district": "WELWYN HATFIELD",
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      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al7/mill-green-road/79",
      "property_url": "https://openproperties.uk/al7/mill-green-road/79"
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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
    }
  ]
}