Homebuyers routinely check a property's energy efficiency before making an offer, yet its vulnerability to climate change is rarely presented as clearly. Moving Compared, the UK home-moving comparison platform, is examining whether climate ratings could become a standard part of conveyancing, helping buyers understand the long-term risks associated with their purchase.
Climate ratings are beginning to feature in conveyancing reports, with October 2026 guidance from Lexsure introducing optional wording covering flooding, ground instability and coastal erosion. The guidance also cautions that a favourable rating does not guarantee a property will remain unaffected.
According to the Environment Agency, approximately 6.3 million properties in England are already in areas at risk of flooding, potentially rising to eight million by 2050. With the Government's June 2026 homebuying reform roadmap proposing earlier access to property searches, environmental risks could become a more visible part of purchasing decisions. Specialist providers already offer climate ratings assessing how exposure to flooding and coastal erosion could change over time. Unlike Energy Performance Certificates (EPCs), which measure energy efficiency, these assessments could help buyers understand potential implications for insurance affordability, mortgage availability and future resale prospects, although climate ratings are not currently mandatory.
Moving Compared recommends buyers check exactly what their conveyancing searches cover, as standard environmental reports may not include future climate projections. The Government's long-term flood risk checker offers a useful starting point in England, although significant concerns may warrant a more detailed property assessment. A property survey can also help identify existing signs of structural damage linked to flooding or ground movement, while specialist assessments may be needed to investigate longer-term environmental risks.
Buyers should also confirm buildings insurance availability before exchanging contracts, particularly where a property has previously flooded. Understanding how environmental risks could affect future ownership costs and marketability is increasingly important when assessing a home's long-term affordability.
While universal climate ratings are not currently required, making environmental risks easier to understand earlier in the buying process could strengthen property due diligence. Greater transparency would help buyers make informed decisions and reduce the likelihood of costly surprises after completion.
