Deputy Prime Minister Nick Clegg told ITV News the government may have to scale back its flagship 'Help to Buy' housing policy.
Nick Clegg said a warning from the Governor of the Bank of England - that booming house prices are a threat to economic recovery - must be heeded.
In comments that appear to contradict Chancellor George Osborne's defence of the programme, Mr Clegg said: "If Mark Carney - in view of his concerns about the housing market - thinks we should scale back on some of those schemes, that's exactly what we should do."
Deputy Political Editor Chris Ship reports.
More top news
Weather will be settled with with some sunshine and feeling cold
A bus carrying school children has crashed in Italy killing at least 16 people.
Tens of thousands of people are expected to join demonstrations on Saturday in cities around the world in support of women's rights.