Documentation of statistics: Construction Cost Indices for Civil Engineering Projects
The statistics are published quarterly approximately 70 days after the end of the quarter, i.e. at the beginning of March (4th quarter), June (1st quarter), September (2nd quarter) and December (3rd quarter).
https://www.dst.dk/en/Statistik/dokumentation/documentationofstatistics/construction-cost-indices-for-civil-engineering-projects
Documentation of statistics