Former Savills chief executive Jeremy Helsby is among backers who have helped deposit replacement scheme flatfair raise $11m (£9.07m), chiefly from Americans.

The funding round was led by US venture capital firm Index Ventures and included Helsby, Revolt Ventures, Adevinta, Greg Marsh, founder of Onefinestay, and Taavet Hinrikus, founder of TransferWise.

The deal is in dollars as Index Ventures and some other investors are US-based, but flatfair will need to transfer the funds into sterling.

Franz Doerr, chief executive of flatfair, said: “Like much of Britain’s housing stock, its rental sector is stuck in the Victorian era.

“Thankfully, cutting edge payment technology can boost transparency, build trust and make instant move-ins a possibility. This is a great competitive advantage for landlords. Renters and policymakers have been trying desperately to improve standards across the market.

“Now, with institutions like Legal & General and LaSalle funding build-to-rent homes alongside thousands of highly professional private landlords, we’re seeing higher standards of service filter through the entire market.”

Martin Mignot, a partner at Index Ventures,  will join flatfair’s board.

Mignot said: “Around $300bn is tied up in deposits globally, so freeing up just a fraction of this money would make a huge difference to millions of renters who deserve a fairer and more transparent service.

“But flatfair has the potential to become the ‘Paypal of property rental’ by offering a range of solutions beyond referencing and deposit management.

“There is huge potential for technology to help real estate companies streamline operations and revenue management, while offering tenants a better, fairer service. flatfair is already working with global companies like CBRE and Greystar to do this and I am very much looking forward to supporting the company on an exciting journey ahead.”