However, maintenance and repair works declined 1.3% on the month in May, while capital repairs nudged down 0.8%.
The data are adjusted for number of working days and seasonality factors.
By destination, residential constructions were up 9% on the month in May, but civil engineering and non-residential constructions decreased by 0.8% and 0.4%, respectively.
On an annual basis, adjusted construction works rose 9% in May, fueled by two-digit growth in the capital repairs and maintenance sectors, the data showed.
Capital repair works were up 25.7% on the year, while maintenance works increased by 18.7%. New construction works, on the other hand, fell 5.9% in May from the year-earlier month.
In the January-May period, construction works decreased by 3.3% on the year, due to declines in the new constructions and maintenance works sectors.
In unadjusted data, construction works rose 16% on the month in May, and were up 3.4% compared with the same month of 2010.