The research figures from November 2005 showed an average flat arrangement fee at GBP441. The fee increased to GBP827, with a 9% of prime deals now charging a percentage fee.
David Knight, mortgage analyst from Moneyfacts.co.uk, said: Thousands of borrowers coming off a two year fixed rate will be bracing themselves for higher interest charges, with the best deals over 1% higher than in 2005. But they will also need to prepare themselves to pay much higher fees, with the average fee rising 100%.
