{
  "url": "https://openproperties.uk/al5/cowper-road/41",
  "address_path": "al5/cowper-road/41",
  "paon": "41",
  "saon": null,
  "street": "COWPER ROAD",
  "locality": null,
  "town_city": "HARPENDEN",
  "district": "ST ALBANS",
  "county": "HERTFORDSHIRE",
  "postcode": "AL5 5NJ",
  "postcodes": [
    "AL5 5NJ"
  ],
  "latitude": 51.814690208380334,
  "longitude": -0.34650266541759467,
  "location_precision": "postcode_centroid",
  "sale_count": 5,
  "first_sale_date": "1998-08-28",
  "last_sale_date": "2017-09-28",
  "last_price": 1120000,
  "truncated": false,
  "sales": [
    {
      "url": "https://openproperties.uk/al5/cowper-road/41/5cf9903b-ee9d-7f13-e053-6c04a8c074b1",
      "transaction_id": "5CF9903B-EE9D-7F13-E053-6C04A8C074B1",
      "price": 1120000,
      "date_of_transfer": "2017-09-28",
      "postcode": "AL5 5NJ",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "41",
      "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/41",
      "property_url": "https://openproperties.uk/al5/cowper-road/41"
    },
    {
      "url": "https://openproperties.uk/al5/cowper-road/41/44b20735-b18d-452a-87a3-4d367dbdcdb4",
      "transaction_id": "44B20735-B18D-452A-87A3-4D367DBDCDB4",
      "price": 887088,
      "date_of_transfer": "2010-09-09",
      "postcode": "AL5 5NJ",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "41",
      "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/41",
      "property_url": "https://openproperties.uk/al5/cowper-road/41"
    },
    {
      "url": "https://openproperties.uk/al5/cowper-road/41/c9f7faa7-0926-4dd7-97f5-65e48536d3e5",
      "transaction_id": "C9F7FAA7-0926-4DD7-97F5-65E48536D3E5",
      "price": 590000,
      "date_of_transfer": "2004-04-28",
      "postcode": "AL5 5NJ",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "41",
      "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/41",
      "property_url": "https://openproperties.uk/al5/cowper-road/41"
    },
    {
      "url": "https://openproperties.uk/al5/cowper-road/41/26f7343a-d273-402c-bca4-7530a792f510",
      "transaction_id": "26F7343A-D273-402C-BCA4-7530A792F510",
      "price": 416000,
      "date_of_transfer": "2000-03-24",
      "postcode": "AL5 5NJ",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "41",
      "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/41",
      "property_url": "https://openproperties.uk/al5/cowper-road/41"
    },
    {
      "url": "https://openproperties.uk/al5/cowper-road/41/699daf70-b403-4940-9210-d2d88135c29a",
      "transaction_id": "699DAF70-B403-4940-9210-D2D88135C29A",
      "price": 190000,
      "date_of_transfer": "1998-08-28",
      "postcode": "AL5 5NJ",
      "property_type": "D",
      "property_type_display": "Detached",
      "new_build": false,
      "duration": "F",
      "duration_display": "Freehold",
      "paon": "41",
      "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/41",
      "property_url": "https://openproperties.uk/al5/cowper-road/41"
    }
  ],
  "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
    }
  ]
}