Updated October 2026 · Data

What is a UPRN, and why it matters for construction leads

The Unique Property Reference Number is the most useful identifier in UK property and planning data, and most suppliers have never heard of it.

The short version

A UPRN, or Unique Property Reference Number, is a number of up to 12 digits that identifies one addressable place: a house, a flat, a shop unit, a plot of land, even a bus shelter or a substation with no postal address. GeoPlace, which runs the national address hub, says there are now over 42.8 million UPRNs in use across the UK.

Think of it as a barcode for a place. A postcode might cover dozens of front doors; the UPRN points at exactly one of them and keeps pointing at it for the life of that property, from planning permission through to demolition. That is why it matters to anyone who follows planning applications for work: it is the thread that ties every application, certificate and sale at one property together.

What a UPRN is, and what it is not

• Up to 12 digits, numbers only. The digits carry no meaning: they do not encode the postcode, the council or the type of property.
• One per addressable place. Not one per street, postcode or development. A block of flats has a UPRN for each flat, and usually a parent one for the building.
• Persistent. A house can be renumbered or change postcode and its UPRN stays put; split it into flats and each flat gets its own UPRN. When a property is demolished the number is retired with its history, never reused.
• Not a title number. HM Land Registry’s title numbers identify registered ownership, which can cover several properties or part of one.
• Not a USRN. The Unique Street Reference Number is its partner for streets, and the two were opened up together.

Who issues the UPRN

Largely your local council. District and unitary councils have a statutory duty to name streets and number properties, and they keep that information in a Local Land and Property Gazetteer. When a new property or plot is created, the council’s address team allocates its UPRN from a range provided by GeoPlace, and Ordnance Survey allocates some too.

GeoPlace, a partnership owned equally by the Local Government Association and Ordnance Survey, combines the councils’ gazetteers into the National Address Gazetteer, and Ordnance Survey distributes it as its AddressBase products. In Northern Ireland, the Pointer address database carries UPRNs too, drawn from the national hub.

Because the UPRN can be allocated when a property is planned, a planning application is often one of the first places a new one appears. That timing is exactly why it is useful to a contractor watching for early-stage work.

How to find the UPRN for an address

• One address: GeoPlace’s FindMyAddress website shows the official address and UPRN for addresses in England, Scotland and Wales, for personal use.
• Many addresses: OS Open UPRN is a free download of every UPRN in Great Britain with its coordinates. It holds no address text, so you match on location, or use the licensed AddressBase products for addresses.
• On a document: many council records show it, and the domestic EPC open data has carried a UPRN column since November 2021.

Why it is open, and why that matters

For years UPRNs sat behind licensing. On 1 July 2020 Ordnance Survey released the UPRN and the USRN as open data under the Open Government Licence, free to use for any purpose with attribution, and GeoPlace launched FindMyAddress the same day. From the same date the government’s open standards required public-sector systems that store or publish property and street information to use the UPRN and USRN.

So the number on a planning record can be joined to other public data that carries it. The domestic EPC data has done so since November 2021, and since August 2026 HM Land Registry has published an openly licensed look-up table that links its Price Paid sales to UPRNs. The specification behind planning.data.gov.uk’s planning-application dataset has a UPRN field too, although, as of October 2026, that dataset is marked incomplete and holds no records yet.

Where the UPRN shows up in planning data

A council planning search shows you the address, the council’s reference number (something like 24/01234/FUL) and a description. Many council systems also store the UPRN of the site behind the scenes, but not always, and a new plot may not have one yet.

The human-readable parts are poor keys. Reference formats differ from one council to the next, and many restart their numbering each year, so 24/01234/FUL in one borough means nothing in the next. Addresses are typed by hand and arrive in many variations: Flat 2, 14 High St against 14a High Street against 14 High Road. A UPRN is the same number however the address was typed, and it is comparable across every council in the country.

You can see the raw applications for an area on a SiteLens council page, for example Birmingham, Lambeth or Amber Valley, and browse the full set from the councils directory.

Why a stable property ID matters for leads

Spotting the same property twice. One property generates many applications over its life: an extension, then a loft conversion, then a change of use. Match on address text and you may treat 14a High Street and 14A High St as two leads, or miss that they are the same site. Match on UPRN and they line up.

Following a site through its stages. A serious scheme can move from outline consent to reserved matters to the discharge of conditions over years, under different reference numbers. The UPRN ties those events to one place, so you can judge when a job is about to start. Our guides to reserved matters and discharge of conditions explain what each stage means.

Joining to other data. Because public datasets carry the same number, a planning record that holds a UPRN can be joined to the EPC register, or your own CRM, without guessing from the address.

Where SiteLens fits

SiteLens checks the planning registers of 380+ UK councils every night, classifies each new application by trade and project type, and lets you filter by estimated value.

Every plan also shows EPC ratings on residential applications, with the achievable rating for homes. On Pro, the record also shows earlier planning applications at the same address, for a flat its whole building, and recent HM Land Registry sales for the postcode. See how classification and alerts work on the features page, or, if you are weighing it against the incumbents, the side-by-side with Glenigan.

Frequently asked

Sources

• GeoPlace: The UPRN and FindMyAddress launch (1 July 2020)
• Ordnance Survey: OS Open UPRN and UPRNs and the property lifecycle (a UPRN is never changed or reused)
• GOV.UK: Open standards: identifying property and street information and the 1 July 2020 release of UPRNs and USRNs
• nidirect: Pointer, Northern Ireland’s address database
• Energy performance data: changes to the format (UPRNs added November 2021)
• HM Land Registry: Transaction unique identifier and UPRN look up table
• planning.data.gov.uk: planning application dataset and its specification (field uprn)