According to the National Landlords Association (NLA), demand for such property continues to be high because finance is restricted.
It comes following a study by the Royal Institution of Chartered Surveyors, which revealed that house price falls in the three months to October had combined with a tightening of
Many would-be sellers were found to have opted to fill the gap in the rental market rather than attempt to sell at a low price.
And NLA spokesman Steven Hilton noted that this had also led to a significant number of "accidental landlords".
"This can lead to problems as inexperienced landlords, who take a short-term view to letting their properties, could find themselves out of their depth," he said, advising anyone who chooses to rent out their property rather than buy a new home to be aware of regulations.