Reference metadata describe statistical concepts and methodologies used for the collection and generation of data. They provide information on data quality and, since they are strongly content-oriented, assist users in interpreting the data. Reference metadata, unlike structural metadata, can be decoupled from the data.
Directorate-General for Economic Planning and Budgets.
Subdirectorate-General for Economic and Statistical Studies
1.3. Contact name
Confidential because of GDPR
1.4. Contact person function
Confidential because of GDPR
1.5. Contact mail address
LUIS GONZALEZ TURNER
MINISTERIO DE TRANSPORTES y MOVILIDAD SOSTENIBLE
Paseo de la Castellana 67, C-408
28071 MADRID - SPAIN
CAROLINA GALA MARIÑO
MINISTERIO DE TRANSPORTES Y MOVILIDAD SOSTENIBLE
Paseo de la Castellana 67, C-418
28071 MADRID - SPAIN
1.6. Contact email address
Confidential because of GDPR
1.7. Contact phone number
Confidential because of GDPR
1.8. Contact fax number
Confidential because of GDPR
2.1. Metadata last certified
9 May 2025
2.2. Metadata last posted
9 May 2025
2.3. Metadata last update
9 May 2025
3.1. Data description
The Construction Production Index.
The index was obtained via the Encuesta de Índices de Producción de la Industria de la Construcción (EIPIC, Survey of Construction Industry Production Indices), which is a statistical investigation conducted at regular intervals to evaluate and analyse trends in the main economic variables of companies primarily engaged in construction activity. The aim of the survey is to obtain a complete, consistent and homogeneous set of quantitative data on the behaviour of the “Construction” sector in the business cycle, and show the monthly evolution of the added value generated by the construction activity.
Main characteristics measured by the survey:
Construction undertakings provide information on a monthly basis on a series of economic variables related to their activity: contracting, works carried out, operating revenue, subcontracts, etc., and variables relating to employment: wages and salaries, staff numbers and hours worked.
3.2. Classification system
The Statistical Classification of Economic Activities in the European Union, NACE 93 Rev. 2. For the products, the Classification of Community Production (PRODCOM) is used.
3.3. Coverage - sector
All undertakings listed in Section F of NACE 93 REV 2.0 (CNAE-2009 in Spain) are covered.
3.4. Statistical concepts and definitions
Production values (sales and income) (Amounts not including VAT)
Sales: Collects the total amount of sales made in the reference month including:
Revenues from sales of finished, executed, certified or pending work, as well as by-products and waste. Sales must be net, that is, discounting rappels, sales returns and similar operations and include product subsidies.
Provision of services corresponds to the services of the construction activity; Income from subcontracts taken.
Sales revenue from commercial stocks includes the sale of goods (including land and lots) in the same state in which they were acquired (resales); Should be recorded at net value, ie discounting the value of rappels and returns and similar.
Other production values
Change in inventories of works in progress and of completed works.
Work performed by the company for its fixed assets.
Subsidies for exploitation
Other management income
Consumer values (purchases and other production expenses) (Amounts not including VAT)
Net purchases of raw materials and other supplies.Costs for Purchases of raw materials and other supplies, include expenses for the acquisition of construction materials and the storable items used for the execution of the works, as well as land and lots Intended for the construction of buildings. They must be net, that is to say, discounted in their case "rappels" and returns of purchases.
Works carried out by other companies (subcontractors). Expenditure on work carried out by other companies (subcontractors assigned), are the payments made for the work entrusted to other companies, whether or not they have strict consideration of subcontractors.
Net purchases of commercial stocks (goods, for resale in the same state in which they were acquired.
Other consumption values
Change in stocks of raw materials and other supplies.
Variation in commercial stocks (goods, including land and lots for resale)
External services
Taxes linked to production and products
Other management expenditure
These statistics use the definitions and procedures established for the REGULATION (CE) Nº 1503/2006 OF THE COMMISSION, of September 28, 2006, which applies and modifies the Regulation (CE) nº 1165/98 of the Council relative to the short-term statistics regarding the definition of variables, the list of variables and the frequency of data collection.
3.5. Statistical unit
The Survey of Construction Industry Production Indices is subject to:
Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics, repealing 10 legal acts in the field of business statistics (EBS-Regulation)
Commission Implementing Regulation 2020/1197 laying down technical specifications and arrangements pursuant to Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics repealing 10 legal acts in the field of business statistic (General Implementing Act)
Commission Implementing Decision 2021/1003 granting derogations to certain Member States with respect to the transmission of statistics pursuant to Regulation (EU) 2019/2152 (Derogations)
3.6. Statistical population
The statistical population consists of undertakings with paid employees whose main activity is construction, both on their own behalf and for other parties. The number of undertakings studied each month is 4 000, distributed as follows: all undertakings with 100 or more employees are taken into account and a sample is taken of the rest. The population framework referred to in the study changes each year: the most recent figures available are for 2020 (SBS 2020), when there were 172.258 undertakings.
The main activity of an undertaking is considered to be the one that provides the highest gross value added at factor cost.
According to the National Classification of Economic Activities for 2009 (CNAE-2009), activities relating to construction are those listed in Section F, “Construction”, as follows:
41.1 Development of building projects: development of projects for the construction of residential and non-residential buildings.
41.2 Construction of buildings: residential and non-residential.
42.1 Construction of roads and railways, bridges and tunnels: roads and motorways, railways and underground railways, bridges and tunnels.
42.2 Construction of utility projects: utility projects for fluids, electricity and telecommunications.
42.9 Construction of other civil engineering projects: specialised construction activities.
43.1 Demolition and site preparation: demolition, site preparation, test drilling and boring.
43.2 Electrical, plumbing and other construction installation activities: electrical installation, plumbing, heating and air-conditioning installation and other construction installation.
43.3 Building completion and finishing: plastering, joinery installation, floor and wall covering, painting and glazing.
43.9 Other specialised construction activities: roofing activities and other specialised construction activities.
3.7. Reference area
It covers all legal units registered in Section F of NACE 93 Rev. 2 Central Directory of Companies of the National Statistics Institute of Spain.
Data for the study> Comprehensive framework> all companies with more than 99 employees. Sampled frame> companies with fewer than 100 employees.
3.8. Coverage - Time
Seasonal Survey of the Construction Industry (Encuesta Coyuntural de la Industría de la Construcción - ECIC). Quarterly series 1988-2005.
Construction Industry Production Indices (Índices de Producción de la Industria de la construcción - EIPIC - CNAE 1993). Monthly series 2005-2008.
Construction Industry Production Indices (Índices de Producción de la Industria de la construcción - EIPIC - CNAE 2009). Monthly series from January 2009 onwards.
3.9. Base period
The base period is the year 2021.
As an index for the value of construction production.
Reference period for the publication of the results of the Survey: Monthly.
Reference period for gathering information: Monthly.
6.1. Institutional Mandate - legal acts and other agreements
The gathering, processing and dissemination of data from statistical operations for State purposes is governed by the provisions of Law 12/1989 of 9 May 1989, on the Public Statistical Function (LFEP) and the Fourth Additional Provision of Law 4/1990 of 29 June 1990. Under the LFEP, the National Statistical Plan is the primary instrument for organising the Government's statistical activity and contains the statistics to be produced over the four-year period by the Government departments or any other bodies responsible to the Government and those to be prepared with the total or partial participation of the Autonomous Communities and Local Corporations under cooperation agreements with the State statistical services or, as appropriate, in compliance with the provisions of the legislation. All statistics included in the National Statistical Plan operative are for State purposes and are mandatory.
The Survey of Construction Industry Production Indices is subject to:
Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics, repealing 10 legal acts in the field of business statistics (EBS-Regulation)
Commission Implementing Regulation 2020/1197 laying down technical specifications and arrangements pursuant to Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics repealing 10 legal acts in the field of business statistic (General Implementing Act)
Commission Implementing Decision 2021/1003 granting derogations to certain Member States with respect to the transmission of statistics pursuant to Regulation (EU) 2019/2152 (Derogations)
6.2. Institutional Mandate - data sharing
The Survey of Construction Industry Production Indices (EIPIC) obtains all of its information via the specific survey carried out by the Subdirectorate-General for Economic and Statistical Studies of the Ministry of Transport and Sustainable Mobility for these statistics; no other institution is involved. Ministry of Transport and Sustainable Mobility makes all non-confidential data available on its dissemination website: https: Portada | Ministerio de Transportes y Movilidad Sostenible.
The only international body to which EIPIC data are sent is Eurostat.
7.1. Confidentiality - policy
Law 12/1989 on the Public Statistical Function prohibits the dissemination or making available in any other manner of individual or aggregated data that could lead to the identification of previously unknown information concerning a person or body. Moreover, European Regulation (EC) No 223/2009 on European statistics provides for the need to establish common principles and guidelines to guarantee the confidentiality of the data used to produce European statistics and the access to these confidential data, taking account of technological progress and the needs of users in a democratic society.
7.2. Confidentiality - data treatment
The Ministry of Transport and Sustainable Mobility takes all the logical, physical and administrative measures necessary to ensure effective protection of confidential data from collection to publication.
Survey questionnaires include a legal clause informing users of the protection of the data collected.
When tables of results are published, the information is analysed in detail to prevent any deduction of confidential data about the statistical units. When micro-data files are transmitted, the data are always anonymised.
8.1. Release calendar
Release of the data corresponding to the reference month t is staggered so that the data appear on the The Ministry of Transport and Sustainable Mobility website at t + 55-60 days, in accordance with a predetermined release calendar.
Data are released simultaneously to all interested parties in accordance with the release calendar. At the same time, the data are published on the The Ministry of Transport and Sustainable Mobility website Portada | Ministerio de Transportes y Movilidad Sostenible. The data is transmitted to EUROSTAT according to the schedule established for the STS statistics.
Tailor-made orders are also sent to registered users. Some users can receive embargoed information as specified in the European Statistics Code of Practice —
Historical data and other studies is the system used by the Ministry of Transport and Sustainable Mobility to store all of its statistical information and disseminate it online. It contains all of the information produced by the Ministry of Transport and Sustainable Mobility in electronic format. It is basically organised using a thematic classification. The basic unit is the statistical operation, defined as the set of activities leading to the obtaining of statistical results for a given sector or theme from individually-collected data, and can be consulted at the following address:
Users can order specially tailored micro-data files for scientific research purposes. Once the viability of the orders has been examined, users may be granted access to the information under strict conditions of confidentiality.
Micro-data are not accessible to the public.
10.5. Dissemination format - other
There is the possibility of ordering tailored information via the functional mailbox. When such orders are processed, restrictions relating to confidentiality or precision are taken into account.
EIPIC data are transmitted to Eurostat within the regulatory timeframes.
Until May 2012, based on Council Regulation (EC) No 1165/98 on short-term statistics, amended by Regulation (EC) No 1158/2005 of the European Parliament and of the Council of 6 July 2005, the European Commission (Eurostat) assessed the quality of the data transmitted and reported on the quality of European statistics to the European Parliament and the Council every three years. To that end, each country provided the information requested by the Commission. Eurostat would provide information on the main quantitative indicators, calculated on the basis of the data provided by the Member States.
From 2013, similar processes will continue to be applied for quality assessment.
A quality evaluation and an overview of the statistical situation are produced each month.
11.1. Quality assurance
The quality assurance framework for the statistics produced by the Subdirectorate-General for Economic Studies and Statistics of The Ministry of Transport and Sustainable Mobility is based on ESCoP:
produced by Eurostat. ESCoP sets out 15 principles, grouped into three areas: Institutional Environment, Processes and Products. Each principle is associated with a series of indicators enabling it to be measured. For quality assessment, various tools provided by EUROSTAT are used: the indicators referred to above, self-assessment (DESAP), peer review, quality audits and user satisfaction surveys.
The EIPIC production process is designed to guarantee the quality of the information used and of the results obtained from it.
To this end, different quality controls have been devised for all the stages of the process:
Data provided are compared and contrasted with historical information from the same reporting unit, comparative analyses are carried out and rapporteurs are asked to explain any fluctuations in production.
Detection of invalid values.
Estimates in the absence of responses.
Supervision and inspection of fieldwork.
Other permanent monitoring of information flows.
11.2. Quality management - assessment
The framework Regulation:
Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics, repealing 10 legal acts in the field of business statistics (EBS-Regulation)
Commission Implementing Regulation 2020/1197 laying down technical specifications and arrangements pursuant to Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics repealing 10 legal acts in the field of business statistic (General Implementing Act)
Commission Implementing Decision 2021/1003 granting derogations to certain Member States with respect to the transmission of statistics pursuant to Regulation (EU) 2019/2152 (Derogations)
stipulates that the quality of the data produced by each Member State and sent to Eurostat must be constantly assessed.
The data delivered to EUROSTAT in t + 45 days of the variables B110, B115 and B116 are very reliable in comparison with the definitive data provided later (the last definitive data is sent in t + 150, as a consequence of the final obtaining of the deflator ). The EIPIC indicators are of high statistical quality that meet all the criteria of consistency, comparability, precision, and punctuality. The methodology follows the recommendations of the United Nations (UN), EUROSTAT and the International Monetary Fund (IMF).
12.1. Relevance - User Needs
The survey responds to the information needs of the main users of which the following are of particular note:
EUROSTAT, UN, OCDE, IFM
ministries and other public bodies
Autonomous Communities
businesses
researchers and universities
press and specialist media
private individuals.
Each of these users has different needs according to the destination and use of the information required. For this reason, tailored information is frequently provided.
12.2. Relevance - User Satisfaction
The parties responsible for the survey are in constant contact with the main users when they express a specific need for information.
There is no specific user satisfaction survey for the EIPIC.
12.3. Completeness
The survey meets all information requirements laid down in both national and international standards.
The EIPIC is governed by Regulation (EC) No 1165/1998 of 19 May 1998 on short-term statistics and successive Regulations amending and complementing that Regulation.
Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics, repealing 10 legal acts in the field of business statistics (EBS-Regulation)
Commission Implementing Regulation 2020/1197 laying down technical specifications and arrangements pursuant to Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics repealing 10 legal acts in the field of business statistic (General Implementing Act)
Commission Implementing Decision 2021/1003 granting derogations to certain Member States with respect to the transmission of statistics pursuant to Regulation (EU) 2019/2152 (Derogations)
This survey satisfies the requirements laid down in all of the above.
Definitively speaking, the survey provides all of the information required under the regulations: the “level of mandatory results available” is therefore 100 %.
13.1. Accuracy - overall
The statistics used in the production of the EIPIC are designed in such a way as to guarantee the reliability and accuracy of the indices and data calculated.
Validity checks and analyses of the information take place at all stages of the process of obtaining the indices and data. Errors and missing responses are addressed, resulting in high levels of statistical reliability with low error rates and bias.
The accuracy of the statistics is determined by the accuracy of the sources of information used from the Structural Survey of the Construction Industry and the Central Directory of Companies of the National Institute of Statistics, used in the preparation of the same. The sample design tries to minimize the sampling errors and the different processes of the survey are aimed at eliminating or reducing as much as possible the errors of the same, both in the collection phase (response rate and debugging control) and in the later phases.
Stratified random sampling with optimal allocation: a sample is taken of companies with less than 100 workers, in the strata without automatic representation, while all large companies with 100 or more workers are included.
Companies with less than 100 workers included in the survey sample represent 80-83% of the 4,000 units studied monthly. Companies with 100 workers or more represent 17-20% of the survey sample. The percentages are proportional to the population.
13.3. Non-sampling error
Checks on non-sampling errors are carried out throughout the statistical process. EIPIC is a specific and unique survey to obtain production data for construction:;the sample used is based on the Central Register of Undertakings and Section F of NACE 93 Rev.2.0.
Specific information on non-response rates is also available. At the time of publication the non-response rate was below 5 %.
14.1. Timeliness
The EIPIC is published 55-60 days following the reference month. Advance data are made available to Eurostat within the regulatory timeframes.
14.2. Punctuality
The results of the survey are published in accordance with The Ministry of Transport and Sustainable Mobility release calendar for statistics, which can be consulted at the following address:
Each publication was issued on the date announced in the release calendar.
15.1. Comparability - geographical
The survey is designed to be homogeneous across the geographical area taken into account in terms of methodology, design, method of collection of information, analysis and verification and screening of data.
In addition, at European level the comparability between countries is guaranteed by the Regulation (CE) 1168/98 on short-term statistics, which confers homogeneity in statistics across all European Union countries that disseminate the same information for their respective geographical spheres and industrial sectors.
15.2. Comparability - over time
The EIPIC was published for the first time in 1988, when it was known as the ECIC (Encuesta Coyuntural de la Industria de la Construcción, Seasonal Survey of the Construction Industry). The changes made since then (changes in periodicity, changes to the sampling framework, change to CNAE, changes to the basis, etc.) have gradually modified certain methodological aspects of the survey, resulting in a degree of interruption to the series, which has been addressed to ensure linked series whenever possible.
Seasonal Survey of the Construction Industry (Encuesta Coyuntural de la Industría de la Construcción - ECIC). Quarterly series 1988-2005.
Construction Industry Production Indices (Índices de Producción de la Industria de la construcción - EIPIC - NACE 1993 Rev.1). Monthly series 2005-2008.
Construction Industry Production Indices (Índices de Producción de la Industria de la construcción - EIPIC - NACE 1993 Rev.2). Monthly series from January 2009 onwards.
15.3. Coherence - cross domain
An examination of trends in annual data reveals that there is coherence between the structural surveys of the sector (Structural Survey of the Construction Industry) and the annual results of the EIPIC.
Data are contrasted with other studies directly related to the sector:
Evolution of registered unemployment in the construction sector
Permits for building works
Tenders for construction
15.4. Coherence - internal
The data used to calculate the production indices are obtained via a specific survey (EIPIC). The data undergo various processes — analysis, validation and attribution — that render them completely coherent, resulting in advance or initial values that do not vary or vary very little relative to the final or definitive values.
The various subsectors of the construction sector - i.e. building and civil engineering - are obtained directly from the data provided by the reporting units.
The workload of the industrial establishments from which we request information has been decreasing in recent years since the implementation of a system that offers respondents the possibility of answering online: this, combined with the possibility of using other methods such as the web , email, fax or telephone, has greatly reduced the time and effort spent by respondents answering questions on the questionnaire. According to the latest available data, the time spent in the survey carried out by the respondent companies reaches 0.32 hours per month. Since the number of reporting units is 4,000, the monthly upload is done at 1,280 hours. Once again, according to the most recent data, the cost in hours of carrying out the EIPIC survey to obtain the production rates is the equivalent of 42,592 hours of work per year, or 3,549 hours per month.
17.1. Data revision - policy
The data is obtained directly from the ad hoc survey and the data collection takes place from the months after the end of the reference period. In the 45 days following the end of the reference period, provisional data is obtained with more than 90% of the reports validated. For the final data, 100% of the questionnaires received are included.
The data remains provisional for three months from the first publication national. National data is not deflated and is not adjusted. Possible revisions only apply to data sent to Eurostat (deflators may be revised) within t + 150 days from the end of the reporting period. reference.
Average variations between the data offered as arrest data and the final data:
Pearson's coefficient> 0.987
Historical Pearson coefficient: 0.980
17.2. Data revision - practice
National data become final three months after their first publication, regardless of any interim revisions that may occur.
The data on production in construction is compared with other indicators of the construction sector, such as employment. Users are promptly informed on the website of potential data revisions and methodological changes that may have occurred. Users can download the data from the official website.
After the publication of the indices during a given month, new information corresponding to the lack of response produced is added, and data analysis and verification tasks continue to be carried out, which may cause modifications and corrections of the initial information, as well as the revision of deflators. These processes result in changes to the published indices. They normally affect the two months prior to the calculated one. The MAR indicator, defined as the average of the absolute value of the differences between the first published data for each month and the last published data for that month, calculated for the last 30 definitive months, has the value of 0.628738. The RMAR indicator, defined as the quotient between the sum of the absolute value of the differences between the first published data for each month and the last published data for that month, and the sum of the last published data for each month, calculated for the last 30 defined months has the value of 0.000213
18.1. Source data
Directory: The survey framework is the Central Business Registry (DIRCE), which includes information on companies with their identification data, location and territorial distribution, and their classification by size and economic activity. Sample size and design: The selection of the sampling units (companies) was carried out by strata defined by the size of the companies and the activities in which they are engaged in accordance with the National Classification of Economic Activities for 2009: at the level nationwide, an exhaustive selection was made of all companies with 100 or more workers and a random sample was taken from those with less than 100 workers, with an optimal allocation within each stratum. The sample size is approximately 4,000 units. Rotation system: Approximately 20% of the sampled units change each year.
18.2. Frequency of data collection
Data is collected monthly
18.3. Data collection
Data collection: In order to collect the information that construction companies must provide for the preparation of these statistics, a questionnaire is used to meet the requirements:
Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics, repealing 10 legal acts in the field of business statistics (EBS-Regulation)
Commission Implementing Regulation 2020/1197 laying down technical specifications and arrangements pursuant to Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics repealing 10 legal acts in the field of business statistic (General Implementing Act)
Commission Implementing Decision 2021/1003 granting derogations to certain Member States with respect to the transmission of statistics pursuant to Regulation (EU) 2019/2152 (Derogations)
Every effort is made to ensure that the requested financial data conforms to the General Chart of Accounts of construction companies and, to facilitate responses, a reference is included to the account, accounts, or groups of accounts corresponding to the information with the requested variable.
The questionnaires corresponding to the following three months are sent to the reporting units with the pertinent instructions for completing them. Responding companies can respond by post, fax, email, or on the website.
The most recent data indicate that the response methods are as follows:
SUB2024-09-10MISSION METHOD
%
Ordinary mail
0,01
Email
0,15
Fax
0,03
Web
99,91
Total
100,00
18.4. Data validation
During the finalization phase, a system to detect inconsistencies is used to alert respondents and ask them to confirm or modify the information provided.
When information is entered, a verification system alerts users to any inconsistencies that may arise. During this process, if any data contains discrepancies, the staff member responsible for collecting the information contacts the respondent to ask him or her to confirm or amend the information provided.
Once the information is compiled, the coverage of the information is checked to ensure that the data entered is complete and to detect duplications and gaps in coverage, lack of responses, etc.
Specific software is used for all these processes.
18.5. Data compilation
Once the information is received, the data screening process can begin. This process consists of two phases: during the first, the micro-screening or micro-data screening is carried out, while the second consists of an analysis for various levels of aggregation or macro-screening.
The micro-screening consists of verifying the validity of the data of each company, taking into account the historical series provided by the same. The analysis establishes month-to-month and year-on-year comparisons.
The second part of the screening takes place after the combined data has been processed. The aggregated information goes through a centralized screening process, where errors detected in the main variables are manually corrected and other variables are automatically examined. When information is available from other sources, consistency between these and the survey results is checked.
Estimators: The estimators or extrapolation coefficients are the factors that, from the data obtained in the sample, allow obtaining results for the population as a whole. The transition of the data from sample to population is carried out using a matrix of extrapolation factors for each activity group and occupational stratum. The variable used to obtain the extrapolation factors was the number of companies in the DIRCE (population group).
The coefficients applied are an attempt to solve the problem presented by the Board of Directors in relation to incidents at the site: stoppages, periods of inactivity, activities other than construction works, etc. Respondents have the same structure when it comes to incidents.
18.6. Adjustment
The production indices under construction are sent in indices:
deflated original series
adjusted calendar series (Easter and national calendar)
seasonally adjusted series
No additional comments
The Construction Production Index.
The index was obtained via the Encuesta de Índices de Producción de la Industria de la Construcción (EIPIC, Survey of Construction Industry Production Indices), which is a statistical investigation conducted at regular intervals to evaluate and analyse trends in the main economic variables of companies primarily engaged in construction activity. The aim of the survey is to obtain a complete, consistent and homogeneous set of quantitative data on the behaviour of the “Construction” sector in the business cycle, and show the monthly evolution of the added value generated by the construction activity.
Main characteristics measured by the survey:
Construction undertakings provide information on a monthly basis on a series of economic variables related to their activity: contracting, works carried out, operating revenue, subcontracts, etc., and variables relating to employment: wages and salaries, staff numbers and hours worked.
9 May 2025
Production values (sales and income) (Amounts not including VAT)
Sales: Collects the total amount of sales made in the reference month including:
Revenues from sales of finished, executed, certified or pending work, as well as by-products and waste. Sales must be net, that is, discounting rappels, sales returns and similar operations and include product subsidies.
Provision of services corresponds to the services of the construction activity; Income from subcontracts taken.
Sales revenue from commercial stocks includes the sale of goods (including land and lots) in the same state in which they were acquired (resales); Should be recorded at net value, ie discounting the value of rappels and returns and similar.
Other production values
Change in inventories of works in progress and of completed works.
Work performed by the company for its fixed assets.
Subsidies for exploitation
Other management income
Consumer values (purchases and other production expenses) (Amounts not including VAT)
Net purchases of raw materials and other supplies.Costs for Purchases of raw materials and other supplies, include expenses for the acquisition of construction materials and the storable items used for the execution of the works, as well as land and lots Intended for the construction of buildings. They must be net, that is to say, discounted in their case "rappels" and returns of purchases.
Works carried out by other companies (subcontractors). Expenditure on work carried out by other companies (subcontractors assigned), are the payments made for the work entrusted to other companies, whether or not they have strict consideration of subcontractors.
Net purchases of commercial stocks (goods, for resale in the same state in which they were acquired.
Other consumption values
Change in stocks of raw materials and other supplies.
Variation in commercial stocks (goods, including land and lots for resale)
External services
Taxes linked to production and products
Other management expenditure
These statistics use the definitions and procedures established for the REGULATION (CE) Nº 1503/2006 OF THE COMMISSION, of September 28, 2006, which applies and modifies the Regulation (CE) nº 1165/98 of the Council relative to the short-term statistics regarding the definition of variables, the list of variables and the frequency of data collection.
The Survey of Construction Industry Production Indices is subject to:
Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics, repealing 10 legal acts in the field of business statistics (EBS-Regulation)
Commission Implementing Regulation 2020/1197 laying down technical specifications and arrangements pursuant to Regulation (EU) 2019/2152 of the European Parliament and of the Council on European business statistics repealing 10 legal acts in the field of business statistic (General Implementing Act)
Commission Implementing Decision 2021/1003 granting derogations to certain Member States with respect to the transmission of statistics pursuant to Regulation (EU) 2019/2152 (Derogations)
The statistical population consists of undertakings with paid employees whose main activity is construction, both on their own behalf and for other parties. The number of undertakings studied each month is 4 000, distributed as follows: all undertakings with 100 or more employees are taken into account and a sample is taken of the rest. The population framework referred to in the study changes each year: the most recent figures available are for 2020 (SBS 2020), when there were 172.258 undertakings.
The main activity of an undertaking is considered to be the one that provides the highest gross value added at factor cost.
According to the National Classification of Economic Activities for 2009 (CNAE-2009), activities relating to construction are those listed in Section F, “Construction”, as follows:
41.1 Development of building projects: development of projects for the construction of residential and non-residential buildings.
41.2 Construction of buildings: residential and non-residential.
42.1 Construction of roads and railways, bridges and tunnels: roads and motorways, railways and underground railways, bridges and tunnels.
42.2 Construction of utility projects: utility projects for fluids, electricity and telecommunications.
42.9 Construction of other civil engineering projects: specialised construction activities.
43.1 Demolition and site preparation: demolition, site preparation, test drilling and boring.
43.2 Electrical, plumbing and other construction installation activities: electrical installation, plumbing, heating and air-conditioning installation and other construction installation.
43.3 Building completion and finishing: plastering, joinery installation, floor and wall covering, painting and glazing.
43.9 Other specialised construction activities: roofing activities and other specialised construction activities.
It covers all legal units registered in Section F of NACE 93 Rev. 2 Central Directory of Companies of the National Statistics Institute of Spain.
Data for the study> Comprehensive framework> all companies with more than 99 employees. Sampled frame> companies with fewer than 100 employees.
Reference period for the publication of the results of the Survey: Monthly.
Reference period for gathering information: Monthly.
The statistics used in the production of the EIPIC are designed in such a way as to guarantee the reliability and accuracy of the indices and data calculated.
Validity checks and analyses of the information take place at all stages of the process of obtaining the indices and data. Errors and missing responses are addressed, resulting in high levels of statistical reliability with low error rates and bias.
The accuracy of the statistics is determined by the accuracy of the sources of information used from the Structural Survey of the Construction Industry and the Central Directory of Companies of the National Institute of Statistics, used in the preparation of the same. The sample design tries to minimize the sampling errors and the different processes of the survey are aimed at eliminating or reducing as much as possible the errors of the same, both in the collection phase (response rate and debugging control) and in the later phases.
As an index for the value of construction production.
Once the information is received, the data screening process can begin. This process consists of two phases: during the first, the micro-screening or micro-data screening is carried out, while the second consists of an analysis for various levels of aggregation or macro-screening.
The micro-screening consists of verifying the validity of the data of each company, taking into account the historical series provided by the same. The analysis establishes month-to-month and year-on-year comparisons.
The second part of the screening takes place after the combined data has been processed. The aggregated information goes through a centralized screening process, where errors detected in the main variables are manually corrected and other variables are automatically examined. When information is available from other sources, consistency between these and the survey results is checked.
Estimators: The estimators or extrapolation coefficients are the factors that, from the data obtained in the sample, allow obtaining results for the population as a whole. The transition of the data from sample to population is carried out using a matrix of extrapolation factors for each activity group and occupational stratum. The variable used to obtain the extrapolation factors was the number of companies in the DIRCE (population group).
The coefficients applied are an attempt to solve the problem presented by the Board of Directors in relation to incidents at the site: stoppages, periods of inactivity, activities other than construction works, etc. Respondents have the same structure when it comes to incidents.
Directory: The survey framework is the Central Business Registry (DIRCE), which includes information on companies with their identification data, location and territorial distribution, and their classification by size and economic activity. Sample size and design: The selection of the sampling units (companies) was carried out by strata defined by the size of the companies and the activities in which they are engaged in accordance with the National Classification of Economic Activities for 2009: at the level nationwide, an exhaustive selection was made of all companies with 100 or more workers and a random sample was taken from those with less than 100 workers, with an optimal allocation within each stratum. The sample size is approximately 4,000 units. Rotation system: Approximately 20% of the sampled units change each year.
The data are disseminated on a monthly basis.
The EIPIC is published 55-60 days following the reference month. Advance data are made available to Eurostat within the regulatory timeframes.
The survey is designed to be homogeneous across the geographical area taken into account in terms of methodology, design, method of collection of information, analysis and verification and screening of data.
In addition, at European level the comparability between countries is guaranteed by the Regulation (CE) 1168/98 on short-term statistics, which confers homogeneity in statistics across all European Union countries that disseminate the same information for their respective geographical spheres and industrial sectors.
The EIPIC was published for the first time in 1988, when it was known as the ECIC (Encuesta Coyuntural de la Industria de la Construcción, Seasonal Survey of the Construction Industry). The changes made since then (changes in periodicity, changes to the sampling framework, change to CNAE, changes to the basis, etc.) have gradually modified certain methodological aspects of the survey, resulting in a degree of interruption to the series, which has been addressed to ensure linked series whenever possible.
Seasonal Survey of the Construction Industry (Encuesta Coyuntural de la Industría de la Construcción - ECIC). Quarterly series 1988-2005.
Construction Industry Production Indices (Índices de Producción de la Industria de la construcción - EIPIC - NACE 1993 Rev.1). Monthly series 2005-2008.
Construction Industry Production Indices (Índices de Producción de la Industria de la construcción - EIPIC - NACE 1993 Rev.2). Monthly series from January 2009 onwards.
