A detached eco home in South West London boasting a perfect EPC score of 108 out of 108 has been listed for sale as new research from Foxtons highlights just how rare top-rated energy efficient homes remain across England and Wales.
According to Foxtons’ analysis of EPC lodgement data over the last 15 years, homes with an EPC rating of A have accounted for an average of just 0.5% of all annual EPC assessments.
While the number of A-rated homes has increased in recent years, they still represent only a tiny proportion of the wider housing stock.
Between 2010 and 2014, A-rated homes accounted for just 0.1% of all EPC lodgements. That figure rose gradually to 0.3% in 2019 and 0.8% by 2023, before surpassing 1% for the first time in 2024 at 1.7%.
LOW-CARBON TECHNOLOGY
In 2025, A-rated homes accounted for 2.7% of EPC lodgements, although EPC C remains by far the most common rating, representing 48% of all properties assessed.
Against that backdrop, Foxtons said its latest listing stands out as one of the most energy efficient homes currently on the market.
Located within the Coombe House Estate in New Malden’s KT3 postcode, the individually designed detached property combines high-end architecture with extensive low-carbon technology.
MAXIMISE EFFICIENCY
The home features a solar array with battery storage capable of generating surplus energy, alongside an air-source heat pump and an MVHR ventilation system designed to minimise heat loss and maximise efficiency.
Internally, the property includes open-plan living spaces, vaulted ceilings, Swedish oak flooring and a bespoke Miele kitchen, while landscaped outdoor areas include garden rooms designed for home working, fitness or storage.
Foxtons said the property demonstrates what can be achieved when sustainability is incorporated into the design process from the outset, rather than added retrospectively through retrofit measures.
SETTING THE BENCHMARK
James Stevenson, Managing Director of Sales at Foxtons, says: “While we’ve seen a gradual increase in the number of homes achieving higher EPC ratings, properties that reach the very top tier of energy performance remain exceptionally rare, which is what makes this particular listing so notable.
“From our perspective on the ground, we are seeing energy efficiency become a more regular part of the conversation during viewings and negotiations, particularly as buyers consider the long-term cost of running a home.
“Whilst location, layout and overall finish remain the primary drivers of demand, features that can help reduce energy bills and improve the overall efficiency of a property are increasingly drawing attention.
EXCEPTIONAL DESIGN
He adds: “What makes this home especially interesting is that it combines those practical benefits with an exceptional standard of design.
“It’s very unusual to see a property that delivers this level of energy performance without compromising on the quality of the living space, from the architecture and materials through to the way the home has been configured.
“This property sets a benchmark in that respect. It demonstrates what can be achieved when design, technology and sustainability are fully aligned.”
