Nationwide Building Society has launched a cashback offer for those purchasing a property with a high-energy efficiency rating.

Nationwide’s ‘Green Reward’ is available on any property with a Standard Assessment Procedure (SAP) rating of at least 86+, which is equivalent to an Energy Performance Certificate (EPC) rating of A or a high B.

The majority of homes sold in the UK must have an EPC to inform prospective buyers how energy efficient the home is.

The Green Reward is aimed at encouraging people to consider buying greener homes, with more cashback available to those purchasing the most energy-efficient properties.

Those purchasing a home with an SAP rating of 92 or above (EPC-A rated) will benefit from £500, while those buying somewhere rated at SAP 86 to 91 (high EPC-B rating) will receive £250.

Green Reward is available to anyone purchasing any property, whether it is an existing house, flat or new-build, taking out any of the lender’s mortgages either direct through the society or via mortgage brokers.

After completion of the mortgage the society will review the EPC register to check the rating of the property.

Once the rating of the property has been confirmed, the Green Reward cashback will be paid to the buyer within four weeks of completion.

Henry Jordan, director of mortgages at Nationwide Building Society, said: “Our homes are where we have one of the biggest individual impacts on climate change, but more needs to be done to deliver a long-term plan to improve energy efficiency of new and existing homes.

“We remain committed to helping make the homes we lend on greener and more sustainable, which is why we have launched our new cashback offer for property purchases.

“By launching Green Reward, we hope it will encourage people to consider the energy efficiency of the property they are buying.

“We also recognise that there are people who will attempt to make their home greener and more sustainable, which is why we recently cut the rate on our Green Additional Borrowing product and are pleased to now offer this through mortgage brokers as we continue to play our part in helping to reduce the carbon emissions of the UK’s housing stock.”