The City of London and Peterborough are home to the most energy efficient properties in Great Britain based on average EPC rating, Searchland analysis shows.
Both of which have an average EPC score of 76/100 to give an average rating of C.
There are only three British Local Planning Authorities (LPAs) in which homes have an average EPC rating higher than C, and all three are either centres of major regeneration or new town development projects.
In Ebbsfleet Garden City, a major development aiming to complete the delivery of a brand new garden city by 2035, homes have an average EPC score of 84/100, creating an overall rating of B.
In the West London regeneration project of Old Oak and Park Royal, homes have an average score of 81/100, again creating an overall average EPC rating of B.
And in East London’s Queen Elizabeth Olympic Park, an average score of 80/100 also gives an average rating of B.
Hugh Gibbs, co-founder of Searchland, said: “It’s clear from this data that energy efficiency is being driven by the new-build market.
“We’ve got major regeneration projects leading the way and setting the standard with an impressive average EPC of B, but outside of this, we’re also seeing the strongest C ratings in areas where a large number of new-build homes are being delivered, which is why London dominates the list.
“But ensuring new-builds are energy efficient is an easy task compared to improving the standard of old and existing stock, as demonstrated by the fact that the worst average EPC scores are found in our National Parks where new-build construction is widely forbidden.
“And while ensuring good new-build efficiency is the job of developers, it falls to homeowners to fund and complete the work required to improve EPC rating across existing homes.
“So while developers certainly have a big part to play, we are still largely dependent on the willingness of homeowners to truly reduce the carbon footprint of Britain’s residential property.”
The least energy efficient markets, which have an EPC rating of E, are: Yorkshire Dales National Park (46); Snowdonia National Park (48); North York Moors National Park (49); Exmoor National Park (52); Na h-Eileanan Siar (53), and Northumberland National Park (53).
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