{
  "url": "https://openproperties.uk/da15/blackfen-road/421",
  "address_path": "da15/blackfen-road/421",
  "paon": "421",
  "saon": null,
  "street": "BLACKFEN ROAD",
  "locality": "SIDCUP",
  "town_city": "SIDCUP",
  "district": "BEXLEY",
  "county": "GREATER LONDON",
  "postcode": "DA15 9NN",
  "postcodes": [
    "DA15 9NN"
  ],
  "latitude": 51.44951029285089,
  "longitude": 0.11261651460539654,
  "location_precision": "postcode_centroid",
  "sale_count": 2,
  "first_sale_date": "1998-10-23",
  "last_sale_date": "2006-04-04",
  "last_price": 442500,
  "truncated": false,
  "sales": [
    {
      "url": "https://openproperties.uk/da15/blackfen-road/421/995737b6-11e8-4e1e-b693-6da214cc38cb",
      "transaction_id": "995737B6-11E8-4E1E-B693-6DA214CC38CB",
      "price": 442500,
      "date_of_transfer": "2006-04-04",
      "postcode": "DA15 9NN",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "421",
      "saon": null,
      "street": "BLACKFEN ROAD",
      "locality": "SIDCUP",
      "town_city": "SIDCUP",
      "district": "BEXLEY",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "da15/blackfen-road/421",
      "property_url": "https://openproperties.uk/da15/blackfen-road/421"
    },
    {
      "url": "https://openproperties.uk/da15/blackfen-road/421/06ba1c31-4be5-44b5-9db9-9d66468c29c3",
      "transaction_id": "06BA1C31-4BE5-44B5-9DB9-9D66468C29C3",
      "price": 75000,
      "date_of_transfer": "1998-10-23",
      "postcode": "DA15 9NN",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "421",
      "saon": null,
      "street": "BLACKFEN ROAD",
      "locality": "SIDCUP",
      "town_city": "SIDCUP",
      "district": "BEXLEY",
      "county": "GREATER LONDON",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "da15/blackfen-road/421",
      "property_url": "https://openproperties.uk/da15/blackfen-road/421"
    }
  ],
  "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
    }
  ]
}