> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/~/changes/AJZwzCsyrD9hiTbOxIbO/addressing-and-location/addressbase-core.md). # AddressBase Core {% embed url="" %} Local Authority data is at the heart of AddressBase Core. This data provides you with a complete address product; access to over 33 million addresses each unique referenced with the Unique Property Reference Number (UPRN) and property level coordinates. {% hint style="info" %} **This product is updated weekly.** {% endhint %}
Representation of AddressBase Core data showing several types of address classifications clustered in a single area

Representation of AddressBase Core data showing several types of address classifications.

AddressBase Core takes many of the important elements from the other AddressBase products, such as coordinates, classification and cross-references to connect address information to other products via key identifiers. AddressBase Core's primary source of addressing information is Local Authority data from the National Land and Property Gazetteer (NLPG) and One Scotland Gazetteer (OSG). They have the legal responsibility to capture and maintain address data for Great Britain, so you are assured of its authenticity and legal nature. Address information is provided in an easy-to-use format alongside a single line attribute which concatenates all the address elements into what you would expect to see on an envelope. It is updated weekly and is offered in an easier to digest format to make the product as easy to access and use as possible. Customers have asked for easy file formats, so CSV and GeoPackage are available for this product, with headers included – removing the need for any post-processing. Simply load, or drag and drop into a GIS package to start analysing. {% tabs %} {% tab title="Features" %} #### **Approved addressing records** AddressBase Core provides approved addressing records for England, Wales and Scotland based on Local Authority holdings of the National Land and Property Gazetteer (NLPG) and One Scotland Address Gazetteer (OSG). Other attribution includes property-level coordinates and secondary level classifications (detailing the use and type of an address). #### **Property classification** Through property classification attributes, you can quickly understand, locate and perform analysis on the type of addresses you want to interact with. #### **Authoritative data** AddressBase Core's primary source of addressing information is local authority data. They have the legal responsibility to capture and maintain address data for Great Britain, so you can be sure of its authenticity and legal nature. #### **Weekly updates** AddressBase Core is released weekly, keeping you more up to date with changes. {% endtab %} {% tab title="Use Cases" %} #### **Property classification** Making the most of the property classification attributes, you can quickly understand, locate and perform analysis on the type of addresses you want to interact with. #### **Easy cross-referencing** AddressBase Core makes it easier to locate, match and gain insights from other location data with the benefit of having  key identifiers referenced throughout. The Unique Property Reference Number (UPRN), Unique Street Reference Number (USRN) and Topographic Identifier (TOID) allow users to reference to other OS products. {% endtab %} {% tab title="Summary" %} * **Access:** Download * **Data theme:** Address * **Data structure:** Vector – Points * **Coverage:** Great Britain * **Scale:** 1:1 250 to 1:10 000 * **Format:** CSV, GML 3.2.1 * **Ordering area:** All of Great Britain or customisable area (5km² tiles or user-defined polygon) * **OS Data Hub plan**: Public Sector Plan, Premium Plan, Energy & Infrastructure Plan {% endtab %} {% tab title="Additional Information" %} #### **Advantage of AddressBase Core over other AddressBase products** AddressBase Core takes many of the high importance items from the other AddressBase products, such as coordinates, classifications (type of address) and links to other important identifiers; but it also includes a single attribute for an address line, is updated weekly, and is offered in an easier to digest format to make the product as easy to access and use as possible. #### **Properties yet to be built or have been demolished** Properties yet to be built, or those which have been demolished, do not appear in AddressBase Core. In order to keep AddressBase Core as simple as possible, these records are not present. If these are critical to you, please look at AddressBase Premium. #### **AddressBase Core Epoch correspondence** AddressBase Core is released weekly and has a different data extraction date compared to the 6-weekly release schedule of the other AddressBase products. Due to these differences, AddressBase Core will not correspond to any of the Epochs. #### **Coverage of AddressBase Core** AddressBase Core covers Great Britain only, i.e. England, Wales and Scotland. It does not include Northern Ireland and the Channel Islands. #### **Data from Royal Mail’s PAF** The database is a vital component of the single address gazetteer database and is in each of the AddressBase products where there has been a match confirming the address to the LLPG address. {% endtab %} {% endtabs %} ## How to get this product Access to this product is free for Public Sector Geospatial Agreement (PSGA) Members. Find out if you are a PSGA Member or download a sample of AddressBase Core data by accessing the [AddressBase Core product page on the OS website](https://www.ordnancesurvey.co.uk/products/addressbase-core#get), which has with links to all of the relevant resources. Alternatively, you can try out the full product by applying for [a Data Exploration license](https://www.ordnancesurvey.co.uk/licensing/data-exploration-licence). --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. 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