{
  "url": "https://openproperties.uk/hp4/chiltern-park-avenue/142",
  "address_path": "hp4/chiltern-park-avenue/142",
  "paon": "142",
  "saon": null,
  "street": "CHILTERN PARK AVENUE",
  "locality": null,
  "town_city": "BERKHAMSTED",
  "district": "DACORUM",
  "county": "HERTFORDSHIRE",
  "postcode": "HP4 1EZ",
  "postcodes": [
    "HP4 1EZ"
  ],
  "latitude": 51.76928347767627,
  "longitude": -0.5798465021658185,
  "location_precision": "postcode_centroid",
  "sale_count": 4,
  "first_sale_date": "1996-09-27",
  "last_sale_date": "2014-11-10",
  "last_price": 190000,
  "truncated": false,
  "sales": [
    {
      "url": "https://openproperties.uk/hp4/chiltern-park-avenue/142/915e29fa-aa85-4094-84c2-a48223e15af0",
      "transaction_id": "915E29FA-AA85-4094-84C2-A48223E15AF0",
      "price": 190000,
      "date_of_transfer": "2014-11-10",
      "postcode": "HP4 1EZ",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "142",
      "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/142",
      "property_url": "https://openproperties.uk/hp4/chiltern-park-avenue/142"
    },
    {
      "url": "https://openproperties.uk/hp4/chiltern-park-avenue/142/eacd573e-107a-4956-b0db-be20d8914c63",
      "transaction_id": "EACD573E-107A-4956-B0DB-BE20D8914C63",
      "price": 160000,
      "date_of_transfer": "2008-10-10",
      "postcode": "HP4 1EZ",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "142",
      "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/142",
      "property_url": "https://openproperties.uk/hp4/chiltern-park-avenue/142"
    },
    {
      "url": "https://openproperties.uk/hp4/chiltern-park-avenue/142/98d2795e-4f5a-4ea8-861a-0e3f75c00a50",
      "transaction_id": "98D2795E-4F5A-4EA8-861A-0E3F75C00A50",
      "price": 107000,
      "date_of_transfer": "2002-03-21",
      "postcode": "HP4 1EZ",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "142",
      "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/142",
      "property_url": "https://openproperties.uk/hp4/chiltern-park-avenue/142"
    },
    {
      "url": "https://openproperties.uk/hp4/chiltern-park-avenue/142/9878130a-b12b-4c1a-aa3f-0bbe6209044b",
      "transaction_id": "9878130A-B12B-4C1A-AA3F-0BBE6209044B",
      "price": 46000,
      "date_of_transfer": "1996-09-27",
      "postcode": "HP4 1EZ",
      "property_type": "F",
      "property_type_display": "Flat/maisonette",
      "new_build": false,
      "duration": "L",
      "duration_display": "Leasehold",
      "paon": "142",
      "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/142",
      "property_url": "https://openproperties.uk/hp4/chiltern-park-avenue/142"
    }
  ],
  "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
    }
  ]
}