Former housing minister Mark Prisk has said that buy-to-let is “distorting” the housing market and that the “direction of travel” must be changed.

He also sharply criticised some letting agents for showing the industry “in the worst possible light”.

Prisk, a qualified surveyor, was speaking at the RICS residential conference.

He said: “There also remains a problem with some letting agents. Again, the majority do the right thing and I applaud the work of the RICS and others in helping set and maintain good practice.

“Yet (as recent high-profile cases show) there are still agents whose actions show the sector in the worst possible light.

“The result is the public all too often have a negative view of the whole sector, and landlords and letting agents come pretty low in public esteem.

“So I believe the sector needs to change and be seen to change. Strong leadership will be needed to drive it through.

“Indeed, if nearly 20% of households rent their home, we all have a duty – professionals and politicians alike – to make sure the sector offers what people want and need.”

Prisk said that landlords and agents need to start talking about “customers” and not “tenants”.

He called for clear and transparent pricing, and clarity about future rents.

On property investors, he said: “I have nothing against individual buy-to-let landlords. With record low interest rates, prudent savers have naturally switched to property to get a better return.

“However the scale of buy-to-let is distorting housing markets, for example, for first time buyer.

“I believe now is the time for government to review the regulatory and fiscal treatment of buy-to-let to tip the balance in favour of those seeking long-term returns, not short-term capital gains.

“Clearly any changes would have to be undertaken with the greatest of care and over a phased period, but I think that the direction of travel needs changing, and towards long-term investment, for those seeking revenue.”

He went on: “I believe that the private rented sector has a great future, with strong demand and a clear, long-term policy framework to attract investment.

“However, the sector’s poor reputation amongst the public means that increasing supply alone won’t be enough.

“Professionals and policy makers need to redefine the sector, in terms of the service offered; in terms of having transparent pricing; and in the language and standards set.

“Some of the changes won’t be popular amongst existing landlords. Some letting agents will regard this as political froth and needless red tape.

“But if this sector is to fulfil its true potential, landlords and their professionals will need to accept that business as usual simply isn’t an option.”