Brighton is the UK city most at risk from increased premiums due to climate change, scoring 6.2 on Emoov’s rating system.
This was followed by Belfast and Cardiff, both scoring 5.1.
Over 4 in 5 (85)% Brits say they are concerned about climate change, with more than half (52%) admitting to being ‘very concerned’.
Overheating and humidity, storm damage and an expected temperature rise were noted as the top negative impacts on properties.
Looking to the Energy Performance Certificates (EPC’s) of homes, Bungalows prove to be the most efficient type of housing.
Just under two-thirds (59.8%) of bungalows in the UK have an EPC rating between A-C. That’s the highest of any type of housing.
Houses come in second, with two fifths (41.3%) of structures having a good or very good EPC rating (EPC A-C) followed by just over a third (31.42%) of flats.
Maisonettes are the least energy-efficient, with just a fifth (21.68%) having a combined A-C rating.
However, Maisonettes also have the highest proportion of middle ratings, EPC D, with 49.34%, followed by flats at 42.77%.
Looking at the lower end of the energy-efficient scale, just 2% of homes score the lowest rating on the EPC chart.
London is the most energy-efficient region in England and Wales, with two-fifths (41.8%) of residents scoring A-C on the EPC scale.
The South East came in a close second, with 41% of homes scoring a rating of A-C.
In contrast, Yorkshire proved to be one of the least energy-efficient regions, with just a third (33.67%) scoring an energy rating between A-C.
The data was collected by the National Trust, BBC and Climate Central.
Factors such as high winds and flooding are contributing to insurance companies upping their premiums.
As a result, cautious mortgage lenders are revising their loan to value amounts, with high-risk areas seeing rates climb the quickest.
Naveen Jaspal, chief operating office of Emoov said: “Climate change largely affects home insurance and mortgage lending.
“With the increased likelihood of flooding or high winds, insurance companies have to increase their premiums on properties within high risk flood areas.
“In turn, these higher premiums will decrease the likelihood of getting a mortgage on these properties.
“Properties that are likely to become damaged will cause major uncertainty for mortgage lenders.
“The knock on effect will be much higher deposits and lower loan-to-value ratios in these areas, this is a problem, as due to climate change, we are seeing these high-risk areas expanding.”