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Homes in South Yorkshire have seen some of the biggest falls in value in Britain, according to the website Zoopla.co.uk.
That's despite national levels rising by £57 billion over 2012, fuelled mainly by the strength of the property market in London.
The biggest year-on-year falls were seen in Sheffield, where values were down by £286 million and in Doncaster, which suffered a fall of £160 million.
Values went up in two-thirds of Britain's 250 biggest town and cities though, with Bristol and Edinburgh among the biggest gainers of 2012.
The value of homes across the country has now reached £5.96 trillion, according to Zoopla.co.uk, which worked out the figure by combining the estimated current market worth of every home in Britain.