UK address infrastructure for PropTech
The address layer that the rest of your property data stands on
AddressBrain gives property platforms Royal Mail-licensed address lookup, validation and geocoding, so every EPC rating, planning record and valuation you match against an address is matched against the right one.
500 free lookups. No card required.
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Sub-50ms response times
Free tier, no card required
Why the address layer matters
Get the address wrong, and everything built on top of it is wrong too
EPC ratings, planning history, ownership records and valuations are all matched against an address. If that base layer is inconsistent or out of date, every attribute stacked on top inherits the same error.
Most property intelligence providers already build on Royal Mail address data for exactly this reason. AddressBrain gives you that same foundation with a modern, self-serve API instead of a legacy licence.
A mismatched address quietly breaks everything downstream.
EPC ratings, planning history and valuations all get keyed to an address behind the scenes. Get that address wrong, or match it to the wrong record, and the error does not announce itself. It just sits inside every attribute stacked on top of it.
New builds are exactly where legacy address data falls short.
Older datasets lag behind new developments, sometimes by months. That is precisely when your platform needs to show a property, and precisely when a legacy provider is most likely to return nothing at all.
Unlicensed address data can disappear without warning.
More than one UK address data provider has been pulled from the market over licensing issues. Build on a dataset like that and your product's foundation can vanish overnight.
Autocomplete and address search
One clean address in, every attribute lines up behind it.
Add as-you-type completion wherever an address enters your platform: listing forms, agent portals, valuation tools, buyer or tenant search.
Three or four characters and the full, correctly formatted address drops straight in, already structured the way your data model expects it.
Search on a postcode, a partial address or a business name.
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Returns clean, structured, PAF-formatted fields, not one long string.
New-build properties included, so recent developments are searchable as soon as they exist.
Latitude and longitude returned with every match, ready to plot on a map or feed into a valuation model.
Postcode lookup and validation
Clean the property dataset you already have, not just the one you are building.
Property records rarely arrive from a single clean source. Acquired portfolios, legacy listings and third-party feeds often carry addresses that were never validated at all.
Run them through the lookup API, one record at a time or as a batch, and get a full, normalised address back for any UK postcode, with coordinates included.
Validates and normalises data, one record at a time or in a batch.
Latitude, longitude and new-build data included at no extra cost.
Match existing property records against a consistent address standard before layering EPC, planning or valuation data on top.
Flag unrecognised or incomplete addresses before they distort a model or a map.
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Built for whoever builds your platform
One request and your developer can have this live this afternoon.
No sales call, no scoping session, no procurement round before anyone can test it against your data pipeline or platform.
Create an account, copy the key out of the dashboard, and make the first call. Here is the whole integration.
Authenticate with a single API key or bearer token, no OAuth handshake.
Free tier includes 500 lookups, no card required.
Live usage dashboard, so you can watch spend as it happens across products or data pipelines.
Distributed, auto-scaling architecture, so a bulk dataset import does not queue behind one database.
On every plan, including free
What you get out of the box
Sub-50ms UK response times.
Full PAF-formatted address data, including new-build coverage.
Batch and single-lookup validation on the same key.
Latitude and longitude geocoding included on every match, at no extra cost.
Start building in minutes
Create a free account and start returning validated UK addresses in minutes.500 free lockups, a test environment, full API docs, and support included.
No credit card required. Officially licensed by Royal Mail.
No credit card required. Officially licensed by Royal Mail.