Activity in the construction sector is at its lowest level in 18 months - after a year of growth in 2014.
The latest Ulster Bank Construction Purchasing Managers' Index shows housing activity stagnated last month.
New mortgage rules being imposed by the Central Bank may have effected the sector, however there was also a big drop in commercial activity suggesting the causes go beyond this.
Chief Economist at Ulster Bank Simon Barry, says there is scope, as well as a need for growth in construction activity here:
