The Glenigan Index for the three months to January fell by 18 percent compared with January 2012, as activity across most of the construction sector dropped off.
Social housing starts were up by one percent compared to last year - the only area of the sector to see an increase.
The fall in activity was led by the infrastructure and utilities sectors. Their decline was exaggerated by the particularly strong start to 2012, when projects were scheduled to ensure preparations were ready in time fo...
