'In 2004, household gearing increased by over 20%,' the bank says. 'This means it was 20% more expensive to service a new mortgage in 2004 than it was in 2003. The two previous times this happened were in 1979 and 1989. Both occasions were followed by slumps in real house prices. So, unlike the Bank of England, we do not believe recent falls in house prices will prove temporary.'