{
  "url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-162",
  "address_path": "w9/castellain-road/castellain-mansions/flat-162",
  "paon": "CASTELLAIN MANSIONS",
  "saon": "FLAT 162",
  "street": "CASTELLAIN ROAD",
  "locality": "LONDON",
  "town_city": "LONDON",
  "district": "CITY OF WESTMINSTER",
  "county": "GREATER LONDON",
  "postcode": "W9 1HD",
  "postcodes": [
    "W9 1HD"
  ],
  "latitude": 51.52706257065614,
  "longitude": -0.19004710882638895,
  "location_precision": "postcode_centroid",
  "sale_count": 3,
  "first_sale_date": "1997-04-03",
  "last_sale_date": "2001-03-30",
  "last_price": 285000,
  "truncated": false,
  "sales": [
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      "transaction_id": "926FE702-ADD4-44CF-8C59-2D198D2F10DF",
      "price": 285000,
      "date_of_transfer": "2001-03-30",
      "postcode": "W9 1HD",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "CASTELLAIN MANSIONS",
      "saon": "FLAT 162",
      "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-162",
      "property_url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-162"
    },
    {
      "url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-162/f455d2df-f8df-4bdb-ab98-39f9aae38c12",
      "transaction_id": "F455D2DF-F8DF-4BDB-AB98-39F9AAE38C12",
      "price": 210000,
      "date_of_transfer": "1999-02-26",
      "postcode": "W9 1HD",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "CASTELLAIN MANSIONS",
      "saon": "FLAT 162",
      "street": "CASTELLAIN ROAD",
      "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-162",
      "property_url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-162"
    },
    {
      "url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-162/f8df132c-eb77-4d41-ba97-17bf12e606e6",
      "transaction_id": "F8DF132C-EB77-4D41-BA97-17BF12E606E6",
      "price": 150000,
      "date_of_transfer": "1997-04-03",
      "postcode": "W9 1HD",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "CASTELLAIN MANSIONS",
      "saon": "FLAT 162",
      "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-162",
      "property_url": "https://openproperties.uk/w9/castellain-road/castellain-mansions/flat-162"
    }
  ],
  "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
    }
  ]
}