{
  "url": "https://openproperties.uk/al5/sibley-avenue/18",
  "address_path": "al5/sibley-avenue/18",
  "paon": "18",
  "saon": null,
  "street": "SIBLEY AVENUE",
  "locality": null,
  "town_city": "HARPENDEN",
  "district": "ST ALBANS",
  "county": "HERTFORDSHIRE",
  "postcode": "AL5 1HF",
  "postcodes": [
    "AL5 1HF"
  ],
  "latitude": 51.806857992321625,
  "longitude": -0.3324726545131813,
  "location_precision": "postcode_centroid",
  "sale_count": 3,
  "first_sale_date": "1996-06-20",
  "last_sale_date": "2010-10-29",
  "last_price": 452000,
  "truncated": false,
  "sales": [
    {
      "url": "https://openproperties.uk/al5/sibley-avenue/18/c0b30ef7-efa4-40d4-b6ef-2766fbcc07f7",
      "transaction_id": "C0B30EF7-EFA4-40D4-B6EF-2766FBCC07F7",
      "price": 452000,
      "date_of_transfer": "2010-10-29",
      "postcode": "AL5 1HF",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "18",
      "saon": null,
      "street": "SIBLEY AVENUE",
      "locality": null,
      "town_city": "HARPENDEN",
      "district": "ST ALBANS",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al5/sibley-avenue/18",
      "property_url": "https://openproperties.uk/al5/sibley-avenue/18"
    },
    {
      "url": "https://openproperties.uk/al5/sibley-avenue/18/743512a8-2e92-483a-a959-acb84be806a7",
      "transaction_id": "743512A8-2E92-483A-A959-ACB84BE806A7",
      "price": 385000,
      "date_of_transfer": "2005-07-28",
      "postcode": "AL5 1HF",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "18",
      "saon": null,
      "street": "SIBLEY AVENUE",
      "locality": "HARPENDEN",
      "town_city": "HARPENDEN",
      "district": "ST ALBANS",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al5/sibley-avenue/18",
      "property_url": "https://openproperties.uk/al5/sibley-avenue/18"
    },
    {
      "url": "https://openproperties.uk/al5/sibley-avenue/18/ce43d08d-56d8-432d-a461-be97c00be6a6",
      "transaction_id": "CE43D08D-56D8-432D-A461-BE97C00BE6A6",
      "price": 143500,
      "date_of_transfer": "1996-06-20",
      "postcode": "AL5 1HF",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "18",
      "saon": null,
      "street": "SIBLEY AVENUE",
      "locality": "HARPENDEN",
      "town_city": "HARPENDEN",
      "district": "ST ALBANS",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "al5/sibley-avenue/18",
      "property_url": "https://openproperties.uk/al5/sibley-avenue/18"
    }
  ],
  "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
    }
  ]
}