Fianna Fáil is criticising the Government for reportedly spinning the amount of land available for its housing strategy.
The Sunday Independent is reporting that only two thirds of land which is earmarked for homes in Dublin is correctly zoned.
An email from a Department of the Environment official, seen by the paper confirms that only 30,000 units can be built on available land.
The coalition has promised 46,000 homes.
Fianna Fáil's Environment spokesman Barry Cowen said the culture of spin appeared to be seeping into the civil service.,
"The civil service has has a proud history of being apolitical up to now, and I'm very disappointed to hear them creating the same soundings as the Government."