The business offers a range of flexible finance products including residential and commercial bridging, light refurbishment, VAT bridging, revolving trading facility and auction finance.
Its products are designed to address the lack of funding for buy-to-let investors.
Benson Hersch, chief executive of the ASTL, said: “We are really pleased to welcome Signature Private Finance on board.
“A newcomer to the short-term lending market, Signature Private Finance is backed by its access to significant funding resources and extensive experience of property; which can only help widen the choice of reputable lenders within the bridging industry.”
Bilal Ahmed, chief executive officer of Signature Private Finance, said: “At Signature Private Finance, we’ve set ourselves in a unique position where all lending decisions are made in-house, by property finance experts that see the same potential in property that investors see.
“With this, we aim to drive up standards in the industry and help improve the reputation of the sector.
“We look forward to being able to learn and grow with the other reputable lenders who are members of the ASTL and to help shape the market that we are a part of.”