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      "first_sale_date": "1997-12-12",
      "last_sale_date": "2015-03-11",
      "last_price": 3680900,
      "url": "https://openproperties.uk/w1k/grosvenor-square/48/flat-12"
    },
    {
      "paon": "48",
      "saon": "FLAT 12A",
      "postcode": "W1K 2HT",
      "sale_count": 1,
      "first_sale_date": "2011-01-27",
      "last_sale_date": "2011-01-27",
      "last_price": 1350000,
      "url": "https://openproperties.uk/w1k/grosvenor-square/48/flat-12a"
    },
    {
      "paon": "49",
      "saon": "FLAT 1",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 996986,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-1"
    },
    {
      "paon": "49",
      "saon": "FLAT 2",
      "postcode": "W1K 3EP",
      "sale_count": 2,
      "first_sale_date": "1999-12-18",
      "last_sale_date": "2023-07-20",
      "last_price": 13500000,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-2"
    },
    {
      "paon": "49",
      "saon": "FLAT 3",
      "postcode": "W1K 3EP",
      "sale_count": 3,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "2022-12-02",
      "last_price": 14600000,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-3"
    },
    {
      "paon": "49",
      "saon": "FLAT 4",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 684067,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-4"
    },
    {
      "paon": "49",
      "saon": "FLAT 5",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 955000,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-5"
    },
    {
      "paon": "49",
      "saon": "FLAT 6",
      "postcode": "W1K 3EP",
      "sale_count": 2,
      "first_sale_date": "2019-03-14",
      "last_sale_date": "2021-03-31",
      "last_price": 13530000,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-6"
    },
    {
      "paon": "49",
      "saon": "FLAT 7",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "2021-06-15",
      "last_sale_date": "2021-06-15",
      "last_price": 22700,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-7"
    },
    {
      "paon": "49",
      "saon": "FLAT 8",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 775211,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-8"
    },
    {
      "paon": "49",
      "saon": "FLAT 9",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 924212,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-9"
    },
    {
      "paon": "49",
      "saon": "FLAT 10",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 648601,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-10"
    },
    {
      "paon": "49",
      "saon": "FLAT 11",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 572689,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-11"
    },
    {
      "paon": "49",
      "saon": "FLAT 12",
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 131628,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49/flat-12"
    },
    {
      "paon": "49/49A & 50",
      "saon": "AIRSPACE AT",
      "postcode": "W1K 3ER",
      "sale_count": 1,
      "first_sale_date": "2020-11-25",
      "last_sale_date": "2020-11-25",
      "last_price": 200000,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49-49a-50/airspace-at"
    },
    {
      "paon": "49A",
      "saon": null,
      "postcode": "W1K 3EP",
      "sale_count": 1,
      "first_sale_date": "1999-12-18",
      "last_sale_date": "1999-12-18",
      "last_price": 335202,
      "url": "https://openproperties.uk/w1k/grosvenor-square/49a"
    },
    {
      "paon": "50",
      "saon": null,
      "postcode": "W1K 3ER",
      "sale_count": 1,
      "first_sale_date": "1999-12-13",
      "last_sale_date": "1999-12-13",
      "last_price": 625614,
      "url": "https://openproperties.uk/w1k/grosvenor-square/50"
    }
  ],
  "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.",
  "provenance": {
    "source": "HM Land Registry Price Paid Data",
    "source_url": "https://www.gov.uk/government/statistical-data-sets/price-paid-data-downloads",
    "retrieved_at": null
  }
}