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OS AddressBase API Illustration

OS AddressBase Solution Provider All the power of Ordnance Survey AddressBase in one API

Use our API to cherry-pick the OS AddressBase fields you want to return, and access the whole suite of Postcoder features.

AddressBase Premium

  • 39 million addresses

    Including PAF and Local Authority BS7666 addresses

  • Complete property lifecycle

    Alternative, pre-build and historic addresses

  • Residential and commercial properties

    Plus objects without addresses like phone boxes, ponds and pylons

  • Geocodes

    Address coordinates and grid references

  • Key identifiers

    Records include UPRN, UDPRN and a number of other key identifiers

  • Read more about AddressBase Premium

AddressBase Core

  • 33 million address records

    From Royal Mail PAF (Postcode Address File)

  • Weekly updates

    The latest address information

  • Property classifications

    Includes residential and commercial properties

  • Read more about AddressBase Core

Postcoder is the key to your Ordnance Survey data solution

  • Fraud detection

    The record of alternative addresses provided by AddressBase Premium can help financial institutions and insurance companies prevent fraud.

  • Risk assessment

    The scale and granularity of AddressBase Premium allows you to conduct detailed risk analysis at the level of individual properties, or big picture analysis of changing neighbourhoods.

  • Planning and services

    The provisional addresses included in AddressBase Premium enable accurate infrastructure planning that caters for growing towns and cities.

Use Postcoder to access AddressBase with our simple and secure API

Get up and running with address lookup in minutes using the quick start guide, sample code and API docs.

  • Get started for free
  • Retain your existing form layout
  • Customise response fields and address lines
  • Get 100% free support over live chat, email and telephone
  • 99.99% API uptime
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