13 May 2026

Construction Production Index (COPI)

March 2026. Provisional data

Main results

The annual rate of the Construction Production Index stands at -5.8% in the seasonal and calendar-adjusted series and -4.3% in the original.
The monthly variation of the COPI stood at 1.9%, after seasonal and calendar adjustment.

More information

Tables annex (includes information on original and seasonally adjusted series)
Detailed results (monthly)

The Total Construction Production Index, once adjusted for seasonal and calendar effects, showed a variation of -5.8% in March, as compared with the same month of the previous year. On the other hand, the COPI original series registered an annual variation of -4.3%.

Construction Production Index, Total. Seasonally and calendar adjusted

Annual rates. Percentage

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            "26.3",
            "22.3",
            "26.2",
            "32.2",
            "37.9",
            "32.7",
            "16.2",
            "16.3",
            "34.7",
            "19.2",
            "9.4",
            "-20.7",
            "-14.9",
            "-4.3"
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            "29.0",
            "24.2",
            "27.3",
            "29.6",
            "29.8",
            "26.7",
            "19.5",
            "17.7",
            "25.7",
            "18.2",
            "12.8",
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The seasonally and calendar-adjusted indices showed positive annual growth rates in two of the three divisions analyzed. Civil engineering recorded the highest increase (19.3%), while the only decline occurred in Construction of buildings (-32.1%).

Construction Production Index, Total and by Divisions. March 2026

Annual rates. Percentage

Monthly trend of COPI

The monthly variation of the seasonally and calendar-adjusted Construction Production Index between the months of February and March 2026 stood at 1.9%. This rate was 1.1 points higher than the previous month.

Construction Production Index, Total. Seasonally and calendar adjusted

Monthly rates. Percentage

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            "-0.6",
            "3.0",
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Of the three divisions analyzed, only Construction of buildings showed a negative monthly rate (-1.3%). Civil engineering recorded the largest increase (33.6%).

Data revisions and updates

On the press release day, INE has updated COPI data series corresponding to the last 13 months. In the case of calendar adjusted and seasonally and calendar adjusted series, according to INE standard, the series are revised since its beginning. The results are available at INEBase.

According to the Commission Delegated Regulation (EU) 2023/137 INE has started the works to incorporate the new National Classification of Economic Activities CNAE-2025 in all the statistical operations.

In the case of the COPI, the release of the first results with CNAE-2025 will take place in March 2028.

Methodological note

The Construction Production Index (COPI) is a short-term synthesis statistical operation aiming at obtaining an indicator to measure the short-term evolution of added value in the construction sector.

Survey type:: ongoing monthly.
Base year:: 2021.
Population scope:: units of economic activity that carry out any activity included in Section F: Construction CNAE-2009.
Geographical scope:: the whole country.
Results reference period:: calendar month.
Sample size:: Approx. 3,600 units.
Collection method:: fill in a questionnaire by the respondent using the following methods: internet (IRIA system), email, fax, telephone or post.

Further information is available in the methodology and in the standardized methodological report.

INE statistics are produced in accordance with the Code of Good Practice for European Statistics. More information on Quality at INE and Code of Best Practices.

For further information see

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