Building materials' cost index rose 4.2 pct in February, compared with the same month last year, after an increase of 1.8 pct recorded in February 2010, Hellenic Statistical Authority said on Monday.

The statistics service, in a report, said the building materials' cost index rose 3.4 pct on average in the 12-month period from February 2010 to February 2011, after a decline of 0.9 pct recorded in the previous 12-month period.