The increase represents a 12.9% growth on the £2.6bn reported for February by the Council for Mortgage Lenders.
Andy Knee, chief executive of LMS, said: “Remortgage activity outpaced total gross mortgage lending with a strong 13% rise in March.
“Remortgage borrowers are also taking advantage of current competitive mortgage rates to increase the size of their mortgage borrowing, releasing an average of £20,982 in order to spend or reduce other debts.
“As a result remortgage borrowers are also taking on higher repayment commitments relative to their income.
“Remortgage repayments as a percentage of income are now at the highest for over 3 years at 21.2%. This percentage is now almost the same as for new purchase borrowers, 21.4%, who have typically borrowed more than remortgagors.
“We expect remortgage activity to continue to increase over the next few months spurred on by low mortgage rates and lenders being able to lend more as a result of the government’s Funding for Lending Scheme.”
The average remortgage loan amount has fallen for the first time since May 2012 and now stands at £139,280.
However, despite this fall, it is still £3,000 higher than the peak at the beginning of 2012 (£136,083 – January 2012).