The Tories today called on the Government to ditch home information packs (HIPs) as they were slowing an "already stagnant" housing market.
Shadow communities minister Stewart Jackson said a recent independent review concluded that HIPs did not make a useful contribution to the house-buying process.
He told ministers at question time: "The industry don't want HIPs, buyers and sellers don't want HIPs. Will you therefore admit that HIPs are slowing an already stagnant housing market and it's time they were dumped?"
Mr Jackson said the review by Sir Bryan Carlsberg, former head of the Office of Fair Trading, said the packs were in danger of becoming out of date too quickly.
Communities minister Iain Wright said the HIPs would deliver savings of around £100 million on energy bills if home-owners carried out the stated changes.
He told Mr Jackson: "If you want to sit on the sidelines and snide with undisguised glee, you can do as you wish. I want to get on with the job."
Labour's David Taylor (North West Leicestershire) said that as a past victim of delays when moving house, he had been a supporter of HIPs from the beginning.
But he said unqualified people were "usurping" professional domestic energy assessors, misleading home-owners and bringing the scheme into disrepute.
Mr Wright said all energy assessors must have the relevant skills and knowledge and offered to meet with Mr Taylor to discuss the issues in his constituency.
Tory Angela Watkinson (Upminster) said estate agents had told her there was "no demand whatsoever" for the information packs and prospective house-buyers preferred to employ a surveyor.
But Mr Wright argued that there was a demand and estate agents needed to be encouraged to actually show the buyers the HIPs.
"All the evidence shows that HIPs improve the home-buying process," he said. "(They) can provide suitable information to ensure that the biggest investment someone is likely to make - buying a house - proceeds in a smooth a manner as possible."
For the Liberal Democrats, Lembit Opik agreed with the Tories that HIPs were not popular and were not demanded by house-buyers. He asked ministers to meet him to discuss alternative proposals, such as "simplifying the process, make it much more relevant to the purchaser and do away with the tons of irrelevant material which most people never require."