UPRNs are the authoritative identifier used to uniquely identify addressable locations in Great Britain. Essential for bringing property and address information together.

  • Identifiers
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This product is updated every six weeks

Representation of data provided
Representation of data provided
© Crown copyright and database rights. Ordnance Survey 2024

What OS Open UPRN provides you with

Unique Property Reference Number

A Unique Property Reference Number (UPRN) is a unique numeric identifier for every addressable location in Great Britain, found in OS's AddressBase products.

Addressable features

UPRNs are assigned to approximately 40 million addressable locations, which may be any kind of building; residential or commercial. It may also be an object that might not have a ‘postal ’ address – such as a bus shelter or electricity sub-station.

Share and link data

OS Open UPRN will enable you to share and link data related to UPRNs, which you can spatially analyse and visualise using the accurate location.

Authoritative source

The UPRNs in OS Open UPRN are primarily allocated by Local Authorities, under their legal duty to maintain this information. This means you can have confidence you're accessing an authoritative source of these identifiers.

Identifiers you can trust

The UPRN is a persistent identifier to an addressable location that is never re-used, allowing you to confidently manage associated information to an address.


Technical information

© Crown copyright and database rights. Ordnance Survey 2024


Use cases

OS Open UPRN enables users to:

  • Share information held against a UPRN with a location
  • Link together information associated with UPRNs
  • Download
Data theme
  • Address
Data structure
Vector - Identifiers
Great Britain
1:1250 to 1:10,000
  • CSV
  • GeoPackage
Ordering area
  • All of Great Britain
OS Data Hub plan
  • OS OpenData Plan (FREE)
  • Premium Plan
  • Public Sector Plan
  • Energy & Infrastructure Plan

Documents and Support

Getting started guides

  • OS Open Identifiers - Overview
    This is the overview for the OS Open Identifier products. It provides greater insight into the products and its potential applications. For information on the contents and structure of this overview, please refer to the UPRN, USRN and TOID technical specifications.
    1,377 kb
    September 21, 2020

Technical specification

  • OS Open UPRN - Technical specification
    The technical specification provides detailed technical information about the product. It is targeted at technical users and software developers.
    278 kb
    July 1, 2020

Release notes


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What you get

Key features
  • Unique Property Reference Number
  • Addressable features
  • Share and link data
  • Authoritative source
  • Identifiers you can trust
  • Download
Data structure
Vector - Identifiers
Update frequency
Every six weeks

How to access

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