Rightmove launches Extension Explorer experiment

July 3, 2025
Rightmove logo

Rightmove, the UK’s largest property platform, is experimenting with a new feature to give home-movers access to more information about the extension potential of a property.

The new feature follows on from the success of its Renovation Calculator, and forms part of Rightmove’s suite of valuation tools to help owners understand the value and potential of their home.

People can use these tools to make decisions around when to sell, how to add more value to a home they’ve just moved into, and to assess the potential of their next home. All of the tools are aimed at helping to drive more people to agents to get detailed expert valuations when they are ready to move.

The new Extension Explorer features cost estimates for building an extension, planning approval rates in the area, and examples of properties that have been extended nearby. The feature is available on property listings and in Rightmove’s sold prices section.

Agents can also use these data-driven insights to highlight to prospective buyers how a home could be transformed—whether it’s validating a smart investment, envisioning growth for a family, or seeing the potential in a fixer-upper.

Rightmove has partnered with Britain’s largest home extension company Resi on the feature, combining Rightmove’s leading property data with their extension data to provide extensive insights into a home’s extension potential.

Tarah Lourens, Rightmove’s Chief Technology and Operations Officer said: “This experiment is our latest step in testing various tools and features for the millions of people using Rightmove at different stages of their home-moving journey.

“We’ll be exploring how useful prospective buyers and current home-owners find this information and see if it can help our agent partners with data to help highlight fixer upper and investment opportunities to their customers.”

Alex Depledge, CEO at Resi, said: “We’re excited to partner with Rightmove to help more people unlock the full potential of their homes. With insights from over 9,000 extension projects delivered across the country over many years, Resi brings unmatched renovation data and design expertise. Together we help answer the big questions: what can I build, how much will it cost, and will it add value, right from the property listing itself.”

Rightmove

UK Property news updates shared directly from Rightmove PLC - the country's leading property portal.

You May Also Enjoy

Damaged timber from Dry Rot
Estate Agent Talk

Mould and damp – what you need to know ahead of winter

With the winter months just round the corner, problems with damp and mould can become far more prominent. Autumntime is when many people turn on central heating systems and choose to close windows, preventing fresh air ventilation needed to allow damp air to leave a property. Unfortunately, the combination of warm and damp air can…
Read More →
Breaking News

Rental price and average salary tracker – September 2025

London and South East see biggest dips in required rental salary year-on-year London and the South East saw the sharpest dips year-on-year in the average salary needed in order to rent the average home in that area. London saw a 4.2% drop, whilst the South East saw a decline of 2.9%. Yorkshire and Humberside saw…
Read More →
buying at auction uk
Breaking News

The cities where buying beats renting – with just a 5% deposit

British first-time buyer mortgage payments are typically 17% cheaper than renting, even with a low 5% deposit The average 5% deposit is £11,412 based on a typical first-time buyer property price of £228,233 Among major cities outside London, the biggest gap between owning and renting is in Glasgow, where buyers could save more than £4,750…
Read More →
Rightmove logo
Breaking News

Rightmove’s Weekly Mortgage Rates Tracker

Average rates for 2-year and 5-year fixed-rate mortgages   Term Average rate Weekly change Yearly change 2-year fixed 4.51% +0.00% -0.37% 5-year fixed 4.55% +0.01% +0.01%   Lowest rates for 2-year and 5-year fixed-rate mortgages   Term Lowest rate Weekly change Yearly change 2-year fixed 3.77% +0.05% -0.07% 5-year fixed 3.97% +0.10% +0.29%   Average…
Read More →
Rightmove logo
Breaking News

Data and commentary from Rightmove on stamp duty reforms

Colleen Babcock, Rightmove’s property expert said: “We’ve been calling for stamp duty reform for some time now, as it’s a significant barrier for many people moving home. Abolishing it completely would remove one of the biggest barriers to moving, unlocking more moves at all stages of the property ladder. “Our data shows that only 5%…
Read More →
Breaking News

Second-time buyers dominate demand for longer term fixed mortgage deals

Second-time buyers are dominating demand for longer term fixed mortgage deals, fresh data from Moneyfacts Analyser can reveal. Of those looking for fixed term deals on moneyfactscompare.co.uk: Almost two-thirds (58%) of second-time buyers who compared mortgage deals using the moneyfactscompare.co.uk website were considering terms of three years or longer in the 30 days to 1…
Read More →