Carphone Warehouse founder Sir Charles Dunstone has invested £5m into an online estate agent.

The investment, made with Dunstone’s business partner Roger Taylor, has benefited HouseSimple.

Dunstone, who is chairman of TalkTalk and Dixons Carphone, said: “We believe estate agency is going to change considerably, with the future increasingly belonging to online estate agents.

“We like HouseSimple, we like its management and we like the idea of saving Britain’s home sellers billions of pounds, with a better experience.

“HouseSimple has the potential to be one of the industry’s real online winners, and we intend to be a core investor to help it achieve its full potential. That is what our investment today signals.”

HouseSimple, which says it provides a full estate and letting agency service priced at between £290 and £475, operates online and through a network of 160 HouseSimple local agents.

The firm says it has quadrupled its revenues in the past two years, and believes that online estate agency’s market share will grow from around 2% currently to over 20% over the next five years.

Alex Gosling, CEO of HouseSimple, said: “Online estate agency is a market whose time has come. People are fed-up with the expense and poor customer service of the high street agents.

“We sell more of our properties than high street agents, we achieve a higher asking price, less of our sales fall through, and we have much higher customer satisfaction ratings. To top it all, we only charge one tenth of the price they do.

“With Charles’and Roger’s backing, we can now turn on the growth tap and save our customers an enormous amount of money and hassle.”

The £5m investment into HouseSimple follows a new £1.5m cash injection into eMoov by venture capital firm Episode 1.