Online agent HouseSimple, backed by the co-founder of Carphone Warehouse,  is said to be raising millions of pounds to fund its expansion amid a race for cash among the sector’s biggest players.

According to Sky News, HouseSimple, which includes Sir Charles Dunstone’s vehicle Freston among its shareholders, agreed a cash injection of £13m last week.

In January 2015, it was announced that Dunstone had invested £5m in HouseSimple.

Sky News says the latest raft of money will be used to finance its growth plans as competitors such as Purplebricks, easyProperty and eMoov also seek to build their share of the online agency market. Sky News did not mention today’s Countrywide’s plans in its report.

HouseSimple claims it saves customers an average of more than £5,500. According to the Sky News report, its latest fundraising is understood to have valued the business at around £40m, a fraction of the £312m market capitalisation of listed rival Purplebricks.

Last week, Savills led a £16m fundraising round by YOPA, another digital start-up in the online agency market.

In a statement, Alex Gosling, HouseSimple’s founder and chief executive, said: “We are relentlessly focused on delivering the best selling results for our customers, and with this latest funding round we are confident we can increase our selling success rate and achieved selling price even further.”

The funding round was organised by Lepe Partners, a merchant banking boutique.