Principality Building Society said gross mortgage applications have risen to £2.5bn, a £917m growth, as it announced pre-tax profits of £57.6m.
The Welsh building society said it has grown its assets to £9.3bn, and that it has helped 5000 first-time buyers get on the property ladder.
Steve Hughes, chief executive of Principality Building Society, said: "We have continued to provide a safe home for our members' savings, whilst providing great customer service.
"We have built financial resilience through our strong residential mortgage growth and robust profitability."
Savings balances now stand at more than £6.5bn, up from £6.1bn.
Mr Hughes said the society had made use of loyalty retention rates to keep customers saving with the group and it is investing in digital technology.
He said: "Our members have told us they want flexibility and to have more choice in how they do business with us."
Principality has launched a video conference service throughout its branches.
He said this means the equivalent of face-to-face interviews can take place anywhere throughout our retail network.
