{
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  "address_path": "w9/castellain-road/castellain-mansions/flat-100",
  "paon": "CASTELLAIN MANSIONS",
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  "street": "CASTELLAIN ROAD",
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  "district": "CITY OF WESTMINSTER",
  "county": "GREATER LONDON",
  "postcode": "W9 1HB",
  "postcodes": [
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  ],
  "latitude": 51.52670839332883,
  "longitude": -0.1892394304785335,
  "location_precision": "postcode_centroid",
  "sale_count": 3,
  "first_sale_date": "1997-06-13",
  "last_sale_date": "2013-07-15",
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  "truncated": false,
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      "duration": "L",
      "duration_display": "Leasehold",
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      "locality": null,
      "town_city": "LONDON",
      "district": "CITY OF WESTMINSTER",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "w9/castellain-road/castellain-mansions/flat-100",
      "property_url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-100"
    },
    {
      "url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-100/986c6883-2fb2-4237-93ac-3e58b1450ad9",
      "transaction_id": "986C6883-2FB2-4237-93AC-3E58B1450AD9",
      "price": 220000,
      "date_of_transfer": "1998-02-27",
      "postcode": "W9 1HB",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
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      "town_city": "LONDON",
      "district": "CITY OF WESTMINSTER",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "w9/castellain-road/castellain-mansions/flat-100",
      "property_url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-100"
    },
    {
      "url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-100/66414e29-9b4a-4483-b426-2a00d9fddae9",
      "transaction_id": "66414E29-9B4A-4483-B426-2A00D9FDDAE9",
      "price": 162000,
      "date_of_transfer": "1997-06-13",
      "postcode": "W9 1HB",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "CASTELLAIN MANSIONS",
      "saon": "FLAT 100",
      "street": "CASTELLAIN ROAD",
      "locality": "LONDON",
      "town_city": "LONDON",
      "district": "CITY OF WESTMINSTER",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "w9/castellain-road/castellain-mansions/flat-100",
      "property_url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-100"
    }
  ],
  "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
    }
  ]
}