Average property values in Southwold have risen by 94 per cent since 2016, climbing from £231,236 to £448,106.
The data comes from Alto, a property management software provider connected to more than 35 per cent of estate agents across the UK.
Riccardo Iannucci-Dawson, CEO of Alto, said: “Seaside holiday homes can still be a great investment if you pick the right place.
“The best reason to buy a seaside home is to have a wonderful place where you can relax with your loved ones and earn good rental returns when you are not there.
“They can be a fantastic investment if you look at the data carefully and pinpoint where prices and rental yields have grown most over the last decade.”
Southwold narrowly edged out the more widely known Sandbanks in Dorset, which came second on the list with a 93 per cent rise in property values.
Mr Iannucci-Dawson said: “Southwold narrowly beat the more famous Sandbanks because its percentage rise was greater but all the locations in the top ten would make good investments and will provide a good return in the long term.
“Prices shot up for seaside homes during Covid as people looked to escape cities for a simpler life.
“There was a correction after that and holiday home taxes in the form of punitive second home council tax charges in some popular areas have also affected the market.
“But global warming is making many parts of Europe too hot in the summer and British coastal resorts are an increasingly attractive option for many holidaymakers.”
Other top-performing seaside locations included Saltburn-by-the-Sea, Croyde, West Wittering and Padstow.
