The government has already spent more than 11m on preparation for the introduction of Home Information Packs on June 1.
The money was spent between April 2004 and the end of January 2007.
In a written answer to a question from Caroline Spelman, Tory shadow secretary of state for the Department of Communities and Local Government, housing minister Yvette Cooper revealed that the DCLG has spent a total of 11,684,725 on administration, legal fees, external advisers, the website and other costs associated with the programme.
However, the total budget for the period 2004-05 to 2006-07 was actually set at 16m.
Cooper says: Consumers spend billions of pounds each year on the transaction costs they incur when buying and selling homes.
HIPs are designed to cut waste from home buying and selling as well as providing important energy information to help cut carbon emissions.
The money has been spent on developing and testing the home condition report and other components of the pack; putting in place a quality assurance framework to protect consumers and guarantee standards; developing the necessary systems and developing the necessary systems and explaining the changes to the public and industry stakeholders.