# AddressBase Core Overview

{% hint style="info" %}
Additional information on the AddressBase product family, including a feature comparison of the AddressBase products is available in the [AddressBase Fundamentals guide](/os-downloads/products/addresses-and-names-portfolio/addressbase-fundamentals.md) within the Addressing and Location Portfolio.
{% endhint %}

AddressBase Core is a simple and accessible addressing data product designed to remove the need for pre-processing and complexity. It provides Plug and Play access for addressing data and additional attribution in Great Britain. 

AddressBase Core includes 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 secondary level classifications (detailing the use and type of an address) and a representative point code describing the positional quality of coordinates.

<figure><img src="/files/8oTV6EwmdJSKYMa8UFII" alt="An image of a map showing the following AddressBase Core classifications: ZW: Object of Interest/Place of Worship RD: Residential/Dwelling LD: Land/Development CR: Commercial/Retail CL: Commercial/Leisure"><figcaption><p>An image of a map showing the following AddressBase Core classifications:<br>ZW: Object of Interest/Place of Worship<br>RD: Residential/Dwelling<br>LD: Land/Development<br>CR: Commercial/Retail<br>CL: Commercial/Leisure</p></figcaption></figure>

{% tabs %}
{% tab title="Key features" %}

* All approved addresses for where you can work, rest or play.
* Each address is given a Unique Property Reference Number (UPRN) which will remain with that address throughout its lifecycle.
* Property level coordinates.
* Secondary level classifications for each property, for example, residential dwelling, commercial office.
* Identifiers for other OS products and third party datasets, including the Royal Mail Postcode Address File (PAF), Unique Delivery Point Reference Number (UDPRN) and Office for National Statistics Governmental Statistical Service (GSS) codes.
* Address data sourced from local authorities, which are legally responsible for the naming and numbering of all addresses in the UK.
* Addresses complemented with Royal Mail PAF information such as Organisation name, Post Town and Postcode, where matched.
* Single Line address – A concatenation of all provided address elements into a comma separated single attribute ready to be printed onto an envelope, loaded into a CRM or provided within an address look-up service.
  {% endtab %}

{% tab title="Uses of AddressBase Core" %}
AddressBase Core can be loaded into a database or directly into a GIS software package. It has been designed to make either of these processes as easy as possible, with the GeoPackage file format offering ‘drag and drop’ functionality for some software packages.

You can:

* View addresses for approved properties across Great Britain, including the granular detail provided by the local authorities.
* Determine the use of the address, for example, determine between commercial retail and commercial office addresses.
* Link to other OS products such as [OS MasterMap Topography Layer](broken://pages/86t0HHw73LlkkeXCGJSv) and [OS MasterMap Highways Network](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals.md) or third-party products such as Royal Mail PAF using the Unique Delivery Point Reference Number (UDRPN) or Office for National Statistics using the Government Statistical Service (GSS) codes.
* Load and display the address location in a GIS software package using the GeoPackage format, with no need for any pre-processing.
* Display address information as either a single line address or split into individual elements, with no need for any pre-processing.

You can't:

* Access lifecycle information for an address.
* Determine the most granular level of information about an address, for example, distinguish detached and semi-detached residential dwellings.
  {% endtab %}
  {% endtabs %}

## Index

This overview includes the following sections:

* [Data capture and sources](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-overview/data-capture-and-sources.md)
* [GeoPlace](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-overview/geoplace.md)
* [Unique Property Reference Number (UPRN)](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-overview/unique-property-reference-number-uprn.md)
* [Coordinate reference systems](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-overview/coordinate-reference-systems.md)
* [Classification](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-overview/classification.md)
* [Currency, completeness, and precision](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-overview/currency-completeness-and-precision.md)
* [Product supply](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-overview/product-supply.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-overview.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.