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      "ppd_category_type": "B",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "ne38/helvellyn-avenue/83",
      "property_url": "https://openproperties.uk/ne38/helvellyn-avenue/83"
    },
    {
      "url": "https://openproperties.uk/ne38/helvellyn-avenue/83/81a791b9-dd5c-4f0f-bf14-0a0e07380907",
      "transaction_id": "81A791B9-DD5C-4F0F-BF14-0A0E07380907",
      "price": 40500,
      "date_of_transfer": "1999-04-01",
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      "duration": "F",
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      "paon": "83",
      "saon": null,
      "street": "HELVELLYN AVENUE",
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      "town_city": "WASHINGTON",
      "district": "SUNDERLAND",
      "county": "TYNE AND WEAR",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "ne38/helvellyn-avenue/83",
      "property_url": "https://openproperties.uk/ne38/helvellyn-avenue/83"
    },
    {
      "url": "https://openproperties.uk/ne38/helvellyn-avenue/83/56f4cdb6-bebb-42af-b01c-ea05bc1cd6bc",
      "transaction_id": "56F4CDB6-BEBB-42AF-B01C-EA05BC1CD6BC",
      "price": 36000,
      "date_of_transfer": "1996-12-13",
      "postcode": "NE38 0QL",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
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      "paon": "83",
      "saon": null,
      "street": "HELVELLYN AVENUE",
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      "town_city": "WASHINGTON",
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      "county": "TYNE AND WEAR",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "ne38/helvellyn-avenue/83",
      "property_url": "https://openproperties.uk/ne38/helvellyn-avenue/83"
    }
  ],
  "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
    }
  ]
}