From December 2014 to September 2015 net loans to customers rose by 20% to £5.8bn, as the bank's SME lending also rose by 19% to £2.7bn.
The lender said it is on track to deliver net loan growth of circa £1.4bn in 2015.
Phillip Monks, Aldermore’s chief executive, said: “It has been another excellent quarter for Aldermore as net lending continues to increase in line with our expectations.
“We refreshed our buy-to-let customer offering in July and I’m very pleased that, across both SME Commercial and Residential Mortgages, buy-to-let origination during the third quarter was around 19% higher than for the same period last year.
“As expected, we have not seen any impact from the recently announced changes to tax relief for some individual buy-to-let landlords.”
He added: “Macro-economic conditions and the credit environment remain relatively benign in the UK, with base rates unchanged and continued growth in our target markets.
“We are on track to deliver net loan growth of around £1.4bn in 2015 while maintaining our margins, robust capital position and prudent risk appetite.
“We remain excited about the opportunity we face and confident of our ability to build on our proven track record of delivery for both customers and shareholders during the rest of this year and beyond.”
