Chief executive officer of Look4aProperty.com Aaron Turner noted that there is a risk that tenants will be unable to pay rent as the UK heads toward a recession.
And in that case, problems will be created for the significant sector of the housing market that buy-to-let represents.
"If employment deteriorates further and unemployment starts to rise rapidly next year then the problem you have is with all those landlords who are paying their mortgages with the tenants' money," Mr Turner explained.
But he added that much will depend on the effect of the financial assistance provided by the government and how the market reacts to it, which is difficult to predict.
Unemployment rose to 5.7 per cent - or 1.79 million people - in the third quarter of the year, the Office for National Statistics has found.
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