Ukranian refugees will be housed in four-person units.
200 Ukranian refugees will be housed at a midlands barracks.
The Department of Integration has confirmed that 50 four-person modular units are being installed at Columb Barracks in Mullingar.
The State says that the Westmeath facility was chosen as the first place in which to test their current temporary modular accommodation plan.
The use of the former military barracks has been the subject of a long running community debate.