Negative equity afflicts 'half a million households'
1 March 2014 Last updated at 14:51 GMT
Nearly 500,000 households in the UK are still in negative equity, according to newly released figures.
The situation makes it virtually impossible for homeowners to sell up and move - especially in parts of the country where house prices are falling.
The figures are based on data from more than one million home loans.
Brian Milligan reports.