Free AVM
The UK's only free automated valuation model
Instant residential valuations from market analysis, postcode-level trends and every known attribute of the property. Free when queried by UPRN, updated monthly, no licence or royalty fees.
Free by UPRN · Address lookups from £0.05
GET /residential/uprn/999000000002?fields=property.value.sale.property_value,property.value.sale.property_value_range,property.value.sale.property_value_confidence,property.value.sale.last_transaction_price,property.value.sale.last_transaction_date { "property_value": 285000,"property_value_range": [230000, 360000],"property_value_confidence": "high","last_transaction_price": 222000,"last_transaction_date": "2021-05-13T00:00:00.000Z"}
What you get
Revolutionise property valuation
Access the UK's only free Automated Valuation Model. Our solution provides instant, accurate property valuations for residential properties across the UK using UPRN, with no hidden costs or royalty fees.
Leverage our comprehensive property data, market and historical trends analysis to obtain real-time estimated property values, all through an easy-to-use interface or API that's ideal for businesses looking to minimise costs while maximising value.
Instant Property Valuations
Get real-time access to estimated property values across the UK. Our AVM is based on comprehensive market analysis, historical trends down to the postcode level, and all the known characteristics of a property from our extensive property data to provide accurate valuations instantly.
Free Solution
Eliminate licensing fees associated with other valuation providers. Our AVM is completely free when using UPRN, allowing companies of all sizes to access professional-grade property valuations without the high costs typically associated with such services.
Easily add more data when needed
Enhance your property insights by seamlessly integrating our comprehensive property data. Our flexible system allows you to enrich valuations with many additional features such as rebuild cost estimates, property characteristics, flood risk, crime rates and nearby amenities to deliver a complete, in-depth overview of a property.
Complements what you already use
Built to sit alongside your existing valuation process
Lenders, insurers and agencies already have valuation systems. The free AVM isn't meant to replace them, but to add a fast, consistent first opinion for conveyancers, surveyors and agents.
Quick reference point
Use the AVM as a rapid initial valuation, saving time in the early stages of client interactions.
Data-driven insights
Add last sale date and price alongside the real-time valuation for extra context.
Completely free
Provide instant valuations without any additional expense when querying by UPRN.
Same API, more answers
Combine it with the rest of the record
Address Autocomplete
Precise and reliable address autocomplete for the best property search experience.
Rebuild Costs
Obtain accurate rebuild cost estimates for every kind of residential property.
Cladding
Screen every UK block of flats for cladding presence, likely materials and indicative external-wall fire risk.
Global Perils
Retrieve worldwide flood, wildfire, earthquake and other natural hazard data for any coordinate.
Planning Permissions
Explore standardised UK planning applications, decisions, constraints and documents linked by UPRN.
Commercial properties
Leverage our extensive data on commercial properties, from warehouses to offices and retail.
AI
Access the largest property image dataset, with over 1bn property images for Generative AI training.
FAQ
Free AVM: questions answered
What is an Automated Valuation Model (AVM)?
An Automated Valuation Model (AVM) is a system that uses statistical modelling to estimate the value of a property from data points such as location, property characteristics and market trends.
How accurate is the free AVM?
Our AVM combines market analysis, historical trends down to postcode level and every known characteristic of the property from our data. That gives an accurate valuation instantly. Like all AVMs it is an estimate, so use it alongside other methods for critical decisions.
Is there really no cost to use the AVM?
Yes. The AVM is completely free when you query by UPRN (Unique Property Reference Number). By optimising our data processing costs we can offer professional-grade valuations via API at zero cost to companies of any size.
What is a UPRN?
UPRN stands for Unique Property Reference Number: a 12-digit identifier for every addressable location in Great Britain, assigned by local authorities and managed centrally by GeoPlace. UPRNs give a consistent way to link property information across datasets.
Can I search by address instead of UPRN?
Yes. Address searches cost £0.05 from your balance per lookup to cover address matching, while UPRN searches remain free. UPRN is more accurate and efficient, but the address option is there when you only have one. See pricing
How often is the AVM data updated?
We refresh AVM data every month so valuations reflect current market conditions across the UK.
Can I obtain additional data with the AVM results?
Absolutely. The same API can enrich a valuation with rebuild cost estimates, property features, flood risk, crime rates and nearby amenities for a complete overview of a property.
Are there any rate limits or restrictions?
Free UPRN requests are limited to 1 query per second to ensure fair usage. Paid API plans have no rate limit. For higher volumes email hello@chimnie.com.
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