{
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      "date_of_transfer": "2009-02-13",
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      "property_type": "D",
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      "duration": "F",
      "duration_display": "Freehold",
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      "street": "MARDLEYWOOD",
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      "town_city": "WELWYN",
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      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al6/mardleywood/27",
      "property_url": "https://openproperties.uk/al6/mardleywood/27"
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      "date_of_transfer": "2004-09-02",
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      "street": "MARDLEYWOOD",
      "locality": "WELWYN",
      "town_city": "WELWYN",
      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al6/mardleywood/27",
      "property_url": "https://openproperties.uk/al6/mardleywood/27"
    },
    {
      "url": "https://openproperties.uk/al6/mardleywood/27/05adf304-3e39-4b65-9a21-2d2aee8c8281",
      "transaction_id": "05ADF304-3E39-4B65-9A21-2D2AEE8C8281",
      "price": 327000,
      "date_of_transfer": "2001-07-26",
      "postcode": "AL6 0UY",
      "property_type": "D",
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      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "27",
      "saon": null,
      "street": "MARDLEYWOOD",
      "locality": "WELWYN",
      "town_city": "WELWYN",
      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al6/mardleywood/27",
      "property_url": "https://openproperties.uk/al6/mardleywood/27"
    },
    {
      "url": "https://openproperties.uk/al6/mardleywood/27/dee15e9a-068f-4212-b6a9-004206bf0e4f",
      "transaction_id": "DEE15E9A-068F-4212-B6A9-004206BF0E4F",
      "price": 165000,
      "date_of_transfer": "1996-08-20",
      "postcode": "AL6 0UY",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "27",
      "saon": null,
      "street": "MARDLEYWOOD",
      "locality": "WELWYN",
      "town_city": "WELWYN",
      "district": "WELWYN HATFIELD",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al6/mardleywood/27",
      "property_url": "https://openproperties.uk/al6/mardleywood/27"
    }
  ],
  "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
    }
  ]
}