{
  "url": "https://openproperties.uk/nw4/johns-avenue/21",
  "address_path": "nw4/johns-avenue/21",
  "paon": "21",
  "saon": null,
  "street": "JOHNS AVENUE",
  "locality": null,
  "town_city": "LONDON",
  "district": "BARNET",
  "county": "GREATER LONDON",
  "postcode": "NW4 4EN",
  "postcodes": [
    "NW4 4EN"
  ],
  "latitude": 51.58907548684363,
  "longitude": -0.22368774404459776,
  "location_precision": "postcode_centroid",
  "sale_count": 4,
  "first_sale_date": "1996-12-16",
  "last_sale_date": "2005-06-09",
  "last_price": 440250,
  "truncated": false,
  "sales": [
    {
      "url": "https://openproperties.uk/nw4/johns-avenue/21/e0403ea1-9819-483d-ac48-ed9ff5d9bd4f",
      "transaction_id": "E0403EA1-9819-483D-AC48-ED9FF5D9BD4F",
      "price": 440250,
      "date_of_transfer": "2005-06-09",
      "postcode": "NW4 4EN",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "21",
      "saon": null,
      "street": "JOHNS AVENUE",
      "locality": null,
      "town_city": "LONDON",
      "district": "BARNET",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "nw4/johns-avenue/21",
      "property_url": "https://openproperties.uk/nw4/johns-avenue/21"
    },
    {
      "url": "https://openproperties.uk/nw4/johns-avenue/21/85137857-573f-4ac9-ade4-257d47e06047",
      "transaction_id": "85137857-573F-4AC9-ADE4-257D47E06047",
      "price": 221500,
      "date_of_transfer": "1999-10-01",
      "postcode": "NW4 4EN",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "21",
      "saon": null,
      "street": "JOHNS AVENUE",
      "locality": null,
      "town_city": "LONDON",
      "district": "BARNET",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "nw4/johns-avenue/21",
      "property_url": "https://openproperties.uk/nw4/johns-avenue/21"
    },
    {
      "url": "https://openproperties.uk/nw4/johns-avenue/21/55dec9f2-089f-4b44-b18a-5a2736576c2a",
      "transaction_id": "55DEC9F2-089F-4B44-B18A-5A2736576C2A",
      "price": 149950,
      "date_of_transfer": "1997-06-09",
      "postcode": "NW4 4EN",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "21",
      "saon": null,
      "street": "JOHNS AVENUE",
      "locality": "LONDON",
      "town_city": "LONDON",
      "district": "BARNET",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "nw4/johns-avenue/21",
      "property_url": "https://openproperties.uk/nw4/johns-avenue/21"
    },
    {
      "url": "https://openproperties.uk/nw4/johns-avenue/21/3285cea4-f349-4ca8-94c7-bfe1c0a7eb25",
      "transaction_id": "3285CEA4-F349-4CA8-94C7-BFE1C0A7EB25",
      "price": 127000,
      "date_of_transfer": "1996-12-16",
      "postcode": "NW4 4EN",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "21",
      "saon": null,
      "street": "JOHNS AVENUE",
      "locality": "LONDON",
      "town_city": "LONDON",
      "district": "BARNET",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "nw4/johns-avenue/21",
      "property_url": "https://openproperties.uk/nw4/johns-avenue/21"
    }
  ],
  "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
    }
  ]
}