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      "sale_count": 3,
      "first_sale_date": "1999-12-20",
      "last_sale_date": "2024-10-31",
      "last_price": 1170000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/19"
    },
    {
      "paon": "21",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 2,
      "first_sale_date": "1998-08-04",
      "last_sale_date": "1999-12-10",
      "last_price": 320000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/21"
    },
    {
      "paon": "23",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 1,
      "first_sale_date": "2025-03-28",
      "last_sale_date": "2025-03-28",
      "last_price": 1188000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/23"
    },
    {
      "paon": "24",
      "saon": null,
      "postcode": "HA1 2NU",
      "sale_count": 2,
      "first_sale_date": "2002-07-25",
      "last_sale_date": "2005-09-09",
      "last_price": 665000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/24"
    },
    {
      "paon": "25",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 2,
      "first_sale_date": "1996-11-29",
      "last_sale_date": "2004-03-03",
      "last_price": 471500,
      "url": "https://openproperties.uk/ha1/northwick-park-road/25"
    },
    {
      "paon": "27",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 2,
      "first_sale_date": "1996-07-01",
      "last_sale_date": "2016-07-21",
      "last_price": 745000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/27"
    },
    {
      "paon": "29",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 1,
      "first_sale_date": "2024-01-19",
      "last_sale_date": "2024-01-19",
      "last_price": 685000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/29"
    },
    {
      "paon": "31",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 2,
      "first_sale_date": "2006-04-11",
      "last_sale_date": "2013-03-22",
      "last_price": 422000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/31"
    },
    {
      "paon": "35",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 2,
      "first_sale_date": "2004-09-08",
      "last_sale_date": "2005-06-13",
      "last_price": 315000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/35"
    },
    {
      "paon": "37",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 1,
      "first_sale_date": "2003-03-05",
      "last_sale_date": "2003-03-05",
      "last_price": 295000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/37"
    },
    {
      "paon": "43",
      "saon": null,
      "postcode": "HA1 2NY",
      "sale_count": 2,
      "first_sale_date": "2002-07-02",
      "last_sale_date": "2003-05-27",
      "last_price": 328000,
      "url": "https://openproperties.uk/ha1/northwick-park-road/43"
    }
  ],
  "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
  }
}