getAddress.io-compatible endpoints: values now match getAddress.io's formatting
StableTowns, organisation names, sub_building_name and building_number on the getAddress.io-compatible endpoints change to match getAddress.io's own formatting.
Upcoming — takes effect 14 October 2026 (00:00 UTC). Announced 6 October 2026 to every account using these endpoints. Until then, responses are unchanged.
What's changing
Our getAddress.io-compatible endpoints (/find, /get and /autocomplete) will format values the way getAddress.io itself did, so integrations moving from getAddress.io get the formatting they were built for.
| Field | Before | From 14 October 2026 |
|---|---|---|
Town — town_or_city, the town in formatted_address, in /find address strings and in /autocomplete suggestions | LONDON | London (Royal Mail's mixed case: Stoke-on-Trent, Newcastle Upon Tyne) |
| Organisation names, wherever they appear | Prime Minister & First Lord Of The Treasury | Prime Minister & First Lord of the Treasury |
sub_building_name for an organisation with no flat or unit | "" | the organisation name |
building_number when an address has none | " " (a space) | "" |
Nothing else changes: the same addresses, in the same order, with the same fields — including the paging fields (page, limit, total, next_page) added on 6 October 2026 — and the same pricing (one lookup per /find or /get request).
Do I need to do anything?
Almost certainly not. Check your integration only if it compares town or organisation names character for character, or treats a building_number of " " as present.
Why
These endpoints exist to make moving from getAddress.io straightforward. getAddress.io returned mixed-case towns and re-cased organisation names; now we do too. We've checked our output field by field against getAddress.io's own response: the remaining differences are county and district (local authority), which come from a different source, and latitude/longitude, which we don't yet provide — see Migrating from getAddress.io.
Questions? Email snapaddress@clearpathlabs.co.uk.