{
  "url": "https://openproperties.uk/tw7/northumberland-avenue/4",
  "address_path": "tw7/northumberland-avenue/4",
  "paon": "4",
  "saon": null,
  "street": "NORTHUMBERLAND AVENUE",
  "locality": null,
  "town_city": "ISLEWORTH",
  "district": "HOUNSLOW",
  "county": "GREATER LONDON",
  "postcode": "TW7 5HU",
  "postcodes": [
    "TW7 5HU"
  ],
  "latitude": 51.48047438163855,
  "longitude": -0.33206174506111397,
  "location_precision": "postcode_centroid",
  "sale_count": 3,
  "first_sale_date": "1999-09-27",
  "last_sale_date": "2017-12-08",
  "last_price": 890000,
  "truncated": false,
  "sales": [
    {
      "url": "https://openproperties.uk/tw7/northumberland-avenue/4/64342bfd-b30b-422c-e053-6c04a8c0fb8a",
      "transaction_id": "64342BFD-B30B-422C-E053-6C04A8C0FB8A",
      "price": 890000,
      "date_of_transfer": "2017-12-08",
      "postcode": "TW7 5HU",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "4",
      "saon": null,
      "street": "NORTHUMBERLAND AVENUE",
      "locality": null,
      "town_city": "ISLEWORTH",
      "district": "HOUNSLOW",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "tw7/northumberland-avenue/4",
      "property_url": "https://openproperties.uk/tw7/northumberland-avenue/4"
    },
    {
      "url": "https://openproperties.uk/tw7/northumberland-avenue/4/a32e631a-08a3-4b55-9e4c-10f37a85a39e",
      "transaction_id": "A32E631A-08A3-4B55-9E4C-10F37A85A39E",
      "price": 226500,
      "date_of_transfer": "2000-01-31",
      "postcode": "TW7 5HU",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "4",
      "saon": null,
      "street": "NORTHUMBERLAND AVENUE",
      "locality": null,
      "town_city": "ISLEWORTH",
      "district": "HOUNSLOW",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "tw7/northumberland-avenue/4",
      "property_url": "https://openproperties.uk/tw7/northumberland-avenue/4"
    },
    {
      "url": "https://openproperties.uk/tw7/northumberland-avenue/4/49459962-41c6-4fcf-8bdb-d3d48ed0812d",
      "transaction_id": "49459962-41C6-4FCF-8BDB-D3D48ED0812D",
      "price": 200000,
      "date_of_transfer": "1999-09-27",
      "postcode": "TW7 5HU",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "4",
      "saon": null,
      "street": "NORTHUMBERLAND AVENUE",
      "locality": null,
      "town_city": "ISLEWORTH",
      "district": "HOUNSLOW",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "tw7/northumberland-avenue/4",
      "property_url": "https://openproperties.uk/tw7/northumberland-avenue/4"
    }
  ],
  "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
    }
  ]
}