BUY-TO-LET landlords are planning to increase their property portfolios, according to research.

The survey, by Bradford & Bingley, of 2,700 landlords revealed 83 per cent are intending to increase or maintain their portfolios in the next six months as they are optimistic about the prospects for investment, helped by a fall in rental arrears and the potential for capital growth.

Tenant demand is still healthy, with the number of landlords suffering rental arrears falling from 26 to 19 per cent and more than half have had no void periods in the past six months.

For nearly half of landlords capital growth is their main reason for investing, with 28 per cent looking to purchase in an up-and-coming area to benefit from rising prices.

Bradford & Bingley's Andrew Moss said: "Buy-to-let ranks high in the popularity stakes for investors.

"Landlords are benefiting from a rise in prices and rents mostly staying the same or increasing."