This compares to an increase nationwide of just under 1%
In Donegal, 44 permissions were granted for homes in the first three months of this year compared to 48 in the 1st Quarter of last year.
Figures from the CSO show people are planning to build smaller properties with permission granted for homes of 246 square metres in Q1 off 2016 compared to 258 square metres in Q1 of last year.
74 people successfully applied to extend their properties with a 7 granted permission to alter or convert their property.
A further 58 permissions were granted for farm buildings and commercial units.