Jonathan Samuels, chief executive officer of Dragonfly Property Finance, said: "To pass £500m is not just a major milestone for us but reflects the spiralling demand for short-term finance, especially among people who have never used it before.
“With mainstream lenders still deeply cautious about anything slightly out-of-the-box, people have inevitably turned to alternative finance providers to achieve their goals.
“There’s no reason to think the sector won’t continue to grow strongly in the years ahead.”
It has also recently added a commercial loan product to its armoury.