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      "first_sale_date": "1996-03-29",
      "last_sale_date": "2025-01-31",
      "last_price": 560000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/37/flat-4"
    },
    {
      "paon": "37",
      "saon": "FLAT 6",
      "postcode": "W1H 1SD",
      "sale_count": 1,
      "first_sale_date": "2026-03-18",
      "last_sale_date": "2026-03-18",
      "last_price": 539000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/37/flat-6"
    },
    {
      "paon": "38",
      "saon": "FLAT A",
      "postcode": "W1H 1RP",
      "sale_count": 1,
      "first_sale_date": "2019-03-07",
      "last_sale_date": "2019-03-07",
      "last_price": 1050000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/38/flat-a"
    },
    {
      "paon": "38",
      "saon": "FLAT B",
      "postcode": "W1H 1RP",
      "sale_count": 4,
      "first_sale_date": "2005-09-30",
      "last_sale_date": "2015-09-04",
      "last_price": 1495000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/38/flat-b"
    },
    {
      "paon": "38",
      "saon": "FLAT C",
      "postcode": "W1H 1RP",
      "sale_count": 1,
      "first_sale_date": "1997-03-04",
      "last_sale_date": "1997-03-04",
      "last_price": 147500,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/38/flat-c"
    },
    {
      "paon": "38",
      "saon": "FLAT E",
      "postcode": "W1H 1RP",
      "sale_count": 5,
      "first_sale_date": "1999-07-12",
      "last_sale_date": "2016-03-11",
      "last_price": 1200000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/38/flat-e"
    },
    {
      "paon": "41",
      "saon": null,
      "postcode": "W1H 1FQ",
      "sale_count": 1,
      "first_sale_date": "2014-10-31",
      "last_sale_date": "2014-10-31",
      "last_price": 3210000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/41"
    },
    {
      "paon": "41",
      "saon": "FLAT 1",
      "postcode": "W1H 1FQ",
      "sale_count": 1,
      "first_sale_date": "2024-01-25",
      "last_sale_date": "2024-01-25",
      "last_price": 1125000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/41/flat-1"
    },
    {
      "paon": "41",
      "saon": "FLAT 2",
      "postcode": "W1H 1FQ",
      "sale_count": 1,
      "first_sale_date": "2024-03-01",
      "last_sale_date": "2024-03-01",
      "last_price": 1825000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/41/flat-2"
    },
    {
      "paon": "42",
      "saon": "FLAT 1",
      "postcode": "W1H 1SJ",
      "sale_count": 1,
      "first_sale_date": "2004-06-04",
      "last_sale_date": "2004-06-04",
      "last_price": 400000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/42/flat-1"
    },
    {
      "paon": "43",
      "saon": null,
      "postcode": "W1H 1FQ",
      "sale_count": 5,
      "first_sale_date": "1995-07-21",
      "last_sale_date": "2021-04-13",
      "last_price": 3600000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/43"
    },
    {
      "paon": "44",
      "saon": null,
      "postcode": "W1H 1SJ",
      "sale_count": 2,
      "first_sale_date": "2018-09-26",
      "last_sale_date": "2026-01-15",
      "last_price": 4750000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/44"
    },
    {
      "paon": "46",
      "saon": null,
      "postcode": "W1H 1SJ",
      "sale_count": 3,
      "first_sale_date": "2010-09-13",
      "last_sale_date": "2014-04-11",
      "last_price": 3700000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/46"
    },
    {
      "paon": "49",
      "saon": "PART OF",
      "postcode": "W1H 1FQ",
      "sale_count": 1,
      "first_sale_date": "1996-07-26",
      "last_sale_date": "1996-07-26",
      "last_price": 230000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/49/part-of"
    },
    {
      "paon": "50",
      "saon": null,
      "postcode": "W1H 1SJ",
      "sale_count": 2,
      "first_sale_date": "2006-02-22",
      "last_sale_date": "2017-12-08",
      "last_price": 4200000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/50"
    },
    {
      "paon": "51",
      "saon": null,
      "postcode": "W1H 1FQ",
      "sale_count": 2,
      "first_sale_date": "2016-02-19",
      "last_sale_date": "2023-09-05",
      "last_price": 3000000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/51"
    },
    {
      "paon": "52",
      "saon": null,
      "postcode": "W1H 1SJ",
      "sale_count": 3,
      "first_sale_date": "1999-09-30",
      "last_sale_date": "2021-12-16",
      "last_price": 3200000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/52"
    },
    {
      "paon": "53",
      "saon": null,
      "postcode": "W1H 1SE",
      "sale_count": 1,
      "first_sale_date": "2022-11-29",
      "last_sale_date": "2022-11-29",
      "last_price": 3375000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/53"
    },
    {
      "paon": "54",
      "saon": "GROUND FLOOR FLAT AND UPPER PARTS",
      "postcode": "W1H 1SL",
      "sale_count": 1,
      "first_sale_date": "2015-11-19",
      "last_sale_date": "2015-11-19",
      "last_price": 3198000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/54/ground-floor-flat-and-upper-parts"
    },
    {
      "paon": "55",
      "saon": null,
      "postcode": "W1H 1SF",
      "sale_count": 1,
      "first_sale_date": "2023-11-10",
      "last_sale_date": "2023-11-10",
      "last_price": 1495000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/55"
    },
    {
      "paon": "55",
      "saon": "FLAT 1",
      "postcode": "W1H 1FQ",
      "sale_count": 1,
      "first_sale_date": "1997-02-14",
      "last_sale_date": "1997-02-14",
      "last_price": 96000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/55/flat-1"
    },
    {
      "paon": "55",
      "saon": "FLAT 2",
      "postcode": "W1H 1FQ",
      "sale_count": 1,
      "first_sale_date": "1997-02-14",
      "last_sale_date": "1997-02-14",
      "last_price": 97000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/55/flat-2"
    },
    {
      "paon": "55",
      "saon": "FLAT 3",
      "postcode": "W1H 1FQ",
      "sale_count": 1,
      "first_sale_date": "1997-02-14",
      "last_sale_date": "1997-02-14",
      "last_price": 97000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/55/flat-3"
    },
    {
      "paon": "58 - 62",
      "saon": "FLAT 5",
      "postcode": "W1H 1SN",
      "sale_count": 3,
      "first_sale_date": "2010-06-18",
      "last_sale_date": "2018-06-27",
      "last_price": 1200000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/58-62/flat-5"
    },
    {
      "paon": "58",
      "saon": "FLAT 3",
      "postcode": "W1H 1SN",
      "sale_count": 1,
      "first_sale_date": "2000-03-13",
      "last_sale_date": "2000-03-13",
      "last_price": 205000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/58/flat-3"
    },
    {
      "paon": "58",
      "saon": "FLAT 4",
      "postcode": "W1H 1SN",
      "sale_count": 3,
      "first_sale_date": "1995-05-26",
      "last_sale_date": "2018-07-18",
      "last_price": 365000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/58/flat-4"
    },
    {
      "paon": "58",
      "saon": "FLAT 6",
      "postcode": "W1H 1SN",
      "sale_count": 2,
      "first_sale_date": "1999-11-15",
      "last_sale_date": "2024-05-23",
      "last_price": 528000,
      "url": "https://openproperties.uk/w1h/upper-montagu-street/58/flat-6"
    }
  ],
  "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
  }
}