{
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  "district": "WELWYN HATFIELD",
  "county": "HERTFORDSHIRE",
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  "postcodes": [
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      "duration": "F",
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      "street": "MARDLEY AVENUE",
      "locality": null,
      "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/mardley-avenue/24",
      "property_url": "https://openproperties.uk/al6/mardley-avenue/24"
    },
    {
      "url": "https://openproperties.uk/al6/mardley-avenue/24/01014101-9d52-4bda-ac3d-8245d73dc28e",
      "transaction_id": "01014101-9D52-4BDA-AC3D-8245D73DC28E",
      "price": 165000,
      "date_of_transfer": "2000-01-14",
      "postcode": "AL6 0TZ",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "24",
      "saon": null,
      "street": "MARDLEY AVENUE",
      "locality": null,
      "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/mardley-avenue/24",
      "property_url": "https://openproperties.uk/al6/mardley-avenue/24"
    },
    {
      "url": "https://openproperties.uk/al6/mardley-avenue/24/404ee1c8-7d6f-4a01-bd18-d5d6e3920915",
      "transaction_id": "404EE1C8-7D6F-4A01-BD18-D5D6E3920915",
      "price": 99537,
      "date_of_transfer": "1999-09-03",
      "postcode": "AL6 0TZ",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "24",
      "saon": null,
      "street": "MARDLEY AVENUE",
      "locality": null,
      "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/mardley-avenue/24",
      "property_url": "https://openproperties.uk/al6/mardley-avenue/24"
    }
  ],
  "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
    }
  ]
}