Which? Mortgage Advisers research found the proportion of homeowners with failed applications dropped to 15% for 35 to 44-year-olds and 8% for those aged 45 to 50.
Young people are much more likely to be rejected for a mortgage, with four in 10 (41%) 18 to 24-year-old homeowners being turned down for a mortgage before buying their current home.
Which? Mortgage Advisers research found the proportion of homeowners with failed applications dropped to 15% for 35 to 44-year-olds and 8% for those aged 45 to 50.
This data may reflect that young people have had less time to build up a strong credit profile.
David Blake, principal mortgage adviser, Which? Mortgage Advisers, said:“While a mortgage rejection isn’t the end of the road when buying a home, it can clearly have a detrimental impact on the rest of your home-buying experience.
“Ensure you have all the documents and relevant information you need before submitting your mortgage application and don’t over-stretch your finances by applying for a loan that you won’t be able to afford.”
Overall one in six (16%) mortgage holders has been rejected for a mortgage in the past.
The most likely areas for mortgage rejections were London (29%) and the West Midlands (22%).
Of those rejected for a mortgage, over half (54%) took more than three months to be accepted for another mortgage, highlighting that it can significantly delay the process of buying a house.
It can also affect a borrower's credit score, highlighting the importance of getting advice before applying for a mortgage.