{
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  "street": "COWPER ROAD",
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  "town_city": "HARPENDEN",
  "district": "ST ALBANS",
  "county": "HERTFORDSHIRE",
  "postcode": "AL5 5NF",
  "postcodes": [
    "AL5 5NF"
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  "location_precision": "postcode_centroid",
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      "price": 615000,
      "date_of_transfer": "2012-07-06",
      "postcode": "AL5 5NF",
      "property_type": "S",
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      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "37",
      "saon": null,
      "street": "COWPER ROAD",
      "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/cowper-road/37",
      "property_url": "https://openproperties.uk/al5/cowper-road/37"
    },
    {
      "url": "https://openproperties.uk/al5/cowper-road/37/4a5f317e-fb9d-4c1d-bdc6-2336b91ab344",
      "transaction_id": "4A5F317E-FB9D-4C1D-BDC6-2336B91AB344",
      "price": 270000,
      "date_of_transfer": "2001-10-16",
      "postcode": "AL5 5NF",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "37",
      "saon": null,
      "street": "COWPER ROAD",
      "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/cowper-road/37",
      "property_url": "https://openproperties.uk/al5/cowper-road/37"
    },
    {
      "url": "https://openproperties.uk/al5/cowper-road/37/c538c00a-9dcc-45a3-a564-a4d41ac298f3",
      "transaction_id": "C538C00A-9DCC-45A3-A564-A4D41AC298F3",
      "price": 117000,
      "date_of_transfer": "1996-04-09",
      "postcode": "AL5 5NF",
      "property_type": "S",
      "property_type_display": "Semi-detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "37",
      "saon": null,
      "street": "COWPER ROAD",
      "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/cowper-road/37",
      "property_url": "https://openproperties.uk/al5/cowper-road/37"
    }
  ],
  "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
    }
  ]
}