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TwentyCi Automated Valuation Model (AVM)

Unmatched Accuracy: Powered by real-time data.
One of the most accurate AVMs on the market.
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Precise and climate-friendly property valuations

The mortgage lending process has evolved, with automated credit checks now standard practice. Yet, many lenders still rely on time-consuming manual property valuations involving on-site surveyors. That’s changing fast. Did you know that 50% of all UK mortgages are already underwritten using AVMs? This number is only going up.

Our AVM leverages the UK’s largest and most detailed property database, analysing homes with similar attributes to deliver trustworthy automated valuations. It’s fast, efficient, and built to handle the demands of today’s property market.
It not only saves time and money but also contributes to a greener, more sustainable future. By replacing traditional, manual property valuations with advanced automated technology, we’re helping to reduce the environmental footprint of the residential property valuation process.

Accuracy You Can Trust:

We’re proud to say our AVM predicts actual completion prices with 95% accuracy.
How do we ensure this precision? By using advanced statistical tools to fine-tune our valuations. Here’s what it means for you:

  • Half of all valuations fall within -2.6% to +1.8% of the final price.
  • 95% of valuations are within -10.6% to +8.7% of the final price, giving you the confidence to make informed decisions.

Whether you’re streamlining mortgage approvals or managing property portfolios, our AVM is the trusted tool you need to stay ahead in a fast-changing industry.

Available AVM Models

TwentyCi has been developing the AVMs since 2017, investing significant capital in the continual enhancement and evolution of our AVM family of models.

DOMUS AVM

Our first generation of models for use in situations where rough estimates are acceptable rather than exact valuations.

Decision AVM

Our second generation of models delivers top-tier accuracy while also allowing users to see and understand the reasoning behind the valuations.

AI AVM

Our third generation of models delivers an even higher level of accuracy than previous versions but operates more like a “black box,” meaning their decision-making process is harder to explain.

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TwentyCi
EcoVal360 Report

A specialised suite of Climate Change Reports tailored for the residential property market. These reports are designed to provide legal and property professionals with comprehensive insights into how climate change might impact a property’s future, aiding in due diligence and strategic decision-making.
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The Climate Benefits of AVMs

Fewer On-Site Visits

Traditional property valuations require surveyors to travel to properties, often resulting in significant vehicle emissions. By relying on our AVM, lenders and asset managers can reduce the need for physical visits, cutting down on fuel consumption and CO₂ emissions.

Efficient Resource Use:

Automated valuations improve the process, reducing the need for paper-heavy documentation and unnecessary back-and-forth communication. This leads to less waste and a more efficient use of resources.

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Data-Driven Sustainability:

Our AVM leverages one of the UK’s most comprehensive property databases, analysing comparable properties in real time. This eliminates redundant fieldwork, helping to preserve energy while maintaining valuation accuracy.

Encouraging Greener Investments:

By providing fast, reliable property valuations, our AVM empowers asset managers and lenders to make informed decisions. This can support the transition to energy-efficient homes and environmentally friendly developments.

WHAT OUR CLIENTS SAY

In rapidly changing market conditions, Twenty Ci's real-time data and analysis have provided unparalleled insight into the performance of various UK housing market sectors. This has kept us ahead of market trends, unlike other data sources which have fallen behind.

Lucian Cook

Head of UK Residential Research, Savills

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Unfortunately, most commentary on the UK housing market is full of opinions and anecdotes. The antidote is to consume TwentyCi’s data to get to grips with what’s really going on. Everyone involved in housing transactions and ancillary services will gain insight into the market dynamics without the hot air!

Alex Bannister

Independent Economist

Alex-Bannister
TwentyCi has been instrumental in improving our email strategy. Instead of generic promotions, we now send personalised messages focused on vehicle safety and maintenance. They’ve made it easy to bring together different data sources to create emails that are genuinely useful for our customers.

Matthew Froome

Head of Marketing, ATS Euromaster

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Trusted By Many

At TwentyCi, we don’t just provide data—we deliver the most accurate, actionable, and comprehensive residential property insights to key UK authoritative opinion makers and media sources.

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