{
  "url": "https://openproperties.uk/hp4/chiltern-park-avenue/1",
  "address_path": "hp4/chiltern-park-avenue/1",
  "paon": "1",
  "saon": null,
  "street": "CHILTERN PARK AVENUE",
  "locality": null,
  "town_city": "BERKHAMSTED",
  "district": "DACORUM",
  "county": "HERTFORDSHIRE",
  "postcode": "HP4 1EU",
  "postcodes": [
    "HP4 1EU"
  ],
  "latitude": 51.768558973703904,
  "longitude": -0.5771881213654488,
  "location_precision": "postcode_centroid",
  "sale_count": 3,
  "first_sale_date": "2003-09-11",
  "last_sale_date": "2010-07-26",
  "last_price": 330000,
  "truncated": false,
  "sales": [
    {
      "url": "https://openproperties.uk/hp4/chiltern-park-avenue/1/fd5b4c9e-9705-4d8b-911d-df03940240b8",
      "transaction_id": "FD5B4C9E-9705-4D8B-911D-DF03940240B8",
      "price": 330000,
      "date_of_transfer": "2010-07-26",
      "postcode": "HP4 1EU",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "1",
      "saon": null,
      "street": "CHILTERN PARK AVENUE",
      "locality": null,
      "town_city": "BERKHAMSTED",
      "district": "DACORUM",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "hp4/chiltern-park-avenue/1",
      "property_url": "https://openproperties.uk/hp4/chiltern-park-avenue/1"
    },
    {
      "url": "https://openproperties.uk/hp4/chiltern-park-avenue/1/5fa321e9-a8ef-486a-bfaa-ddb1cc60485c",
      "transaction_id": "5FA321E9-A8EF-486A-BFAA-DDB1CC60485C",
      "price": 300000,
      "date_of_transfer": "2006-07-20",
      "postcode": "HP4 1EU",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "1",
      "saon": null,
      "street": "CHILTERN PARK AVENUE",
      "locality": "BERKHAMSTED",
      "town_city": "BERKHAMSTED",
      "district": "DACORUM",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "hp4/chiltern-park-avenue/1",
      "property_url": "https://openproperties.uk/hp4/chiltern-park-avenue/1"
    },
    {
      "url": "https://openproperties.uk/hp4/chiltern-park-avenue/1/670459c1-21d4-4daa-8a89-4a9cc14c9a1a",
      "transaction_id": "670459C1-21D4-4DAA-8A89-4A9CC14C9A1A",
      "price": 239950,
      "date_of_transfer": "2003-09-11",
      "postcode": "HP4 1EU",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "1",
      "saon": null,
      "street": "CHILTERN PARK AVENUE",
      "locality": "BERKHAMSTED",
      "town_city": "BERKHAMSTED",
      "district": "DACORUM",
      "county": "HERTFORDSHIRE",
      "ppd_category_type": "A",
      "last_seen_at": "2026-07-09T18:56:26.350736+00:00",
      "address_path": "hp4/chiltern-park-avenue/1",
      "property_url": "https://openproperties.uk/hp4/chiltern-park-avenue/1"
    }
  ],
  "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
    }
  ]
}