{
  "url": "https://openproperties.uk/al5/chesterton-avenue/29",
  "address_path": "al5/chesterton-avenue/29",
  "paon": "29",
  "saon": null,
  "street": "CHESTERTON AVENUE",
  "locality": "HARPENDEN",
  "town_city": "HARPENDEN",
  "district": "ST ALBANS",
  "county": "HERTFORDSHIRE",
  "postcode": "AL5 5ST",
  "postcodes": [
    "AL5 5ST"
  ],
  "latitude": 51.8135167623644,
  "longitude": -0.34043803183163845,
  "location_precision": "postcode_centroid",
  "sale_count": 4,
  "first_sale_date": "1996-02-02",
  "last_sale_date": "2004-02-20",
  "last_price": 243500,
  "truncated": false,
  "sales": [
    {
      "url": "https://openproperties.uk/al5/chesterton-avenue/29/29e481dd-62f5-4934-a54e-f438a75c1a53",
      "transaction_id": "29E481DD-62F5-4934-A54E-F438A75C1A53",
      "price": 243500,
      "date_of_transfer": "2004-02-20",
      "postcode": "AL5 5ST",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "29",
      "saon": null,
      "street": "CHESTERTON 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/chesterton-avenue/29",
      "property_url": "https://openproperties.uk/al5/chesterton-avenue/29"
    },
    {
      "url": "https://openproperties.uk/al5/chesterton-avenue/29/0b62c7fc-3c29-45eb-8d87-44756adf7fee",
      "transaction_id": "0B62C7FC-3C29-45EB-8D87-44756ADF7FEE",
      "price": 188000,
      "date_of_transfer": "2000-08-04",
      "postcode": "AL5 5ST",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "29",
      "saon": null,
      "street": "CHESTERTON 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/chesterton-avenue/29",
      "property_url": "https://openproperties.uk/al5/chesterton-avenue/29"
    },
    {
      "url": "https://openproperties.uk/al5/chesterton-avenue/29/c9b714f9-a551-43fd-8fdf-a68c558114ac",
      "transaction_id": "C9B714F9-A551-43FD-8FDF-A68C558114AC",
      "price": 182000,
      "date_of_transfer": "2000-08-04",
      "postcode": "AL5 5ST",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "29",
      "saon": null,
      "street": "CHESTERTON 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/chesterton-avenue/29",
      "property_url": "https://openproperties.uk/al5/chesterton-avenue/29"
    },
    {
      "url": "https://openproperties.uk/al5/chesterton-avenue/29/6fdd8e56-37f2-4870-9a97-2826f41eddc9",
      "transaction_id": "6FDD8E56-37F2-4870-9A97-2826F41EDDC9",
      "price": 99950,
      "date_of_transfer": "1996-02-02",
      "postcode": "AL5 5ST",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "29",
      "saon": null,
      "street": "CHESTERTON 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/chesterton-avenue/29",
      "property_url": "https://openproperties.uk/al5/chesterton-avenue/29"
    }
  ],
  "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
    }
  ]
}