Some landlords are no longer willing to let properties to people on housing benefits as the government's new lower rates take effect.
The new measures would cut out £2.4bn from the housing bill and save the taxpayer an estimated £1bn by 2013/4.
The government says they do not expect many landlords to leave the housing benefit market.
But landlords say they could suffer if interest rates and mortgage payments go up as income from rent falls.
Click here to read the full story Housing benefit cuts deter landlords from letting