Persimmon Homes

Good news for home buyers as new build houses save £2,600 in annual energy bills

13 October 2022

1 in 4 buyers now put efficiency as a key consideration when purchasing a house.

New research based on Government Energy Performance Certificate data has found that buyers of a new build house will save on average around £2,600 a year in energy bills.

The ‘Watt a Save’ report, published today by the Home Builders Federation (HBF), shows that in total people who purchased a new build last year are saving more than £500m on annual energy bills, with new build homes emitting a third of the carbon of an older property, reducing carbon emissions by over 500,000 tonnes.

An analysis of Government data on the energy efficiency of new build and existing homes highlighted the following:

  • New build properties significantly reduce household energy usage, with the average new home using approximately 100 kWh per m2 per year compared with older properties, which require an average of 259kWh per m2.
  • New build properties save an average of just over £2,000 per property each year, with the average annual running costs for a new build totaling £1,500 as compared to an average of £3,570 for older properties. These savings rise to £2,600 a year when looking at new and old houses alone, rather than flats or bungalows.
  • 84% of new build homes were rated with an EPC of B or above, while less than 4% of older homes reached the same standard. 

Bills are now significantly higher than just a few months ago. While there is some comfort in the recent intervention to cap typical energy bills at £2,500, households in poorly insulated and inefficient older properties will continue to pay more than those living in a new build.

Buyers of new homes are also contributing to the progression towards net zero, with each new build producing just a third of the carbon emitted by older homes. This means a saving of 2.2 tonnes of CO2 every year by using on average 100 kWh of energy per m2 of house space, compared to 259 kWh per m2 for an older property.

Click here to learn more about how Persimmon is building homes with sustainability in mind.

Start the search for your new home today. 

Finishing Touches

Create a look that's as individual as you are. Add the finishing touches to your Persimmon home.

Supporting your communities

At Persimmon we're proud to support our local communities. Our Community Champions programme was established in 2015 and has already donated more than £3 million to over 3,500 good causes across Great Britain. We also have a programme of community events taking place as part of our partnership with Team GB for the 2024 Paris Olympics, along with other great initiatives. 


Our hugely successful Community Champions programme has already donated more than £1 million to good causes in England, Wales and Scotland. Whilst the programme is running, each of our regional offices makes a donation of up to £6,000 every quarter to local organisations.

We're proud to be one of Team GB's official partners for Paris 2024. In the lead up to the Olympics we'll be posting lots of exciting content in partnership with Team GB, from athlete appearances to competitions and challenges.

Showcase your style

Why not share your own photos on Instagram using #lovemypersimmonhome for a chance to win a £100 Next voucher. Visit our Facebook page for terms and conditions.