Farmers whose homes were damaged in the Kaikoura earthquake will be able to apply to buy temporary housing units at a discounted rate.
The 20 are at the Rawhiti Domain in Christchurch, where they were used to support families after the 2011 earthquakes.
Building and Construction Minister Dr Nick Smith said farmers in the Hurunui, Kaikoura and Marlborough districts had badly damaged homes after the November 14 earthquake.
"[They] need alternative accommodation while their homes are repaired, but practically need to stay on the land.
"The option of relocating the temporary housing now surplus from the Christchurch earthquake recovery will provide a workable solution for some."