Address autocomplete

Free UK address autocomplete API

Instant, verified address suggestions as your users type. Free when used to retrieve property data, and every suggestion resolves to a property you can query straight away.

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GET /search/autocomplete/10%20downing%20street%20london

{
"addresses": [
    "Flat 10, Downing Court, Grenville Street, London, WC1N 1LX",
    "Prime Minister & First Lord Of The Treasury, 10, Downing Street, London, SW1A 2AA",
    "Flat 10, Key House, Bowling Green Street, London, SE11 5TT",
    "Flat 10, 1, Bowling Green Street, London, SE11 5AF",
    "Flat 10, Dorking House, Pardoner Street, London, SE1 4DP"
  ],"highlights": [
    "Flat <em>10</em>, <em>Downing</em> Court, Grenville <em>Street</em>, <em>London</em>, WC1N 1LX",
    …
  ],"session": "ac-65172b00ae9831b0e96bf222"}

What you get

Simplify Address Search

Enhance your user experience with our free address autocomplete service. Get instant access to accurate UK addresses as your users type, ensuring valid data collection for your property-related services.

Our address autocomplete is completely free when used with our property data services. Access it through our API and create a seamless address search experience for your users while maintaining data accuracy.

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Accurate Address Search

Enable your users to quickly find and select valid UK addresses with our intelligent autocomplete system. As users type, they receive instant suggestions from our comprehensive database of verified addresses, ensuring accuracy and eliminating manual entry errors.

Free Solution

Access our address autocomplete service completely free of charge when used to retrieve property data. Unlike other providers who charge per lookup, our solution allows address searches without any hidden costs.

Seamless Integration

Easily implement our address autocomplete into your existing systems through our developer-friendly API. Present address suggestions in your preferred format - whether as a dropdown, autocomplete field, or custom UI component - while maintaining full control over the user experience.

Same API, more answers

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FAQ

Address Autocomplete: questions answered

Is the address autocomplete API really free?

Yes. It is free when used to retrieve property data through Chimnie. Unlike providers who charge per lookup, there are no hidden per-search costs.

How accurate are the suggestions?

Suggestions come from our database of verified UK addresses, so users pick a valid address instead of typing one, eliminating manual entry errors.

How do I integrate it?

Call the autocomplete endpoint as the user types and render suggestions however you like: a dropdown, an autocomplete field or a custom component. You keep full control of the UX. Read the docs

What happens after an address is selected?

Each suggestion resolves to a property, so you can immediately request its record, valuation or risk data with the same API key.

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