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.
„Dame Gruev“ 4 - Skopje, Republic of North Macedonia
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
11 June 2025
2.2. Metadata last posted
11 June 2025
2.3. Metadata last update
11 June 2025
3.1. Data description
Construction cost index for new residential buildings; Material cost index; Labour cost index.
3.2. Classification system
National Classification of Activities - NKD Rev.2;
National Nomenclature of Industrial Products (NNIP);
Nomenclature of type of constructions and construction works.
3.3. Coverage - sector
Section F - Construction, Division 41 - Construction of new residential buildings
3.4. Statistical concepts and definitions
The Construction cost index for new residential buildings is calculated as a weighted average of the construction material costs index and the labour cost index. The Material cost index covers 96 different products grouped according to the National Nomenclature of Industrial Products (NNIP), in sections B – Mining and quarrying and C – Manufacturing. The Labour cost index is calculated on the basis of data on the average gross wages paid per employee in Section F - Construction, Division 41 - Construction of new residential buildings.
3.5. Statistical unit
Secondary survey. Statistical units are defined with primary surveys.
3.6. Statistical population
Secondary survey. Statistical population is defined with primary surveys.
3.7. Reference area
Republic of North Macedonia
3.8. Coverage - Time
Since January 2005.
3.9. Base period
2021= 100
Indices.
Secondary survey, the reference period depends on the reference periods of the primary surveys (both are monthly surveys).
6.1. Institutional Mandate - legal acts and other agreements
Law on State Statistics (Official Gazette of the Republic of Macedonia 54/97, 21/07, 51/11, 104/13, 42/14, 192/15, 27/16, 83/18, 220/18 and 31/20) and the Programme of Statistical Surveys 2023-2027 (“Official Gazette of the Republic of Macedonia” No.29/23). International standards and regulations: Eurostat Methodology of short-term business statistics, The Regulation (EU) 2019/2135 of the European parliament and the council on Europian business statistics and Commission Implementing Regulation 1197/2020.
6.2. Institutional Mandate - data sharing
Through eDAMIS to Eurostat, with time series since 2005. Data are not transmitted to other international institutions.
7.1. Confidentiality - policy
The data are treated as individual data, protected by the Law on State Statistics, and are used only for statistical purposes.
7.2. Confidentiality - data treatment
This is secondary survey. Individual or personal data are part of primary surveys. Any individual or personal data, regardless of the phase of statistical observation, are treated as confidential data and can be used only for statistical purposes.
8.1. Release calendar
The data release is in accordance with the Advance release calendar, which is published on the State Statistical Office website.
Secondary survey. Quality assurance is provided in the primary surveys.
11.2. Quality management - assessment
The quality report prepared. Quality assessment is provided in the primary surveys too.
12.1. Relevance - User Needs
The Construction cost indices for new residential buildings is intended for reviewing or monitoring the costs incurred by construction companies during the execution of the process of building new residential buildings. The indices are also used as an input for calculations in national accounts and in construction statistics. Construction companies also use Construction cost indices when they refer to the movements of costs in drafting construction contracts. The data are transmitted to Eurostat to enable the international comparability.
12.2. Relevance - User Satisfaction
Not available
12.3. Completeness
All user needs are fulfilled, included Eurostat.
13.1. Accuracy - overall
Determined by overall accuracy in primary surveys.
13.2. Sampling error
Determined by sampling errors in primary surveys.
13.3. Non-sampling error
Determined by non-sampling errors in primary surveys.
14.1. Timeliness
65 days after the end of the reference period (Т+65).
14.2. Punctuality
All deadlines are met.
15.1. Comparability - geographical
The data are produced at the national level. Comparability is ensured at the international level.
15.2. Comparability - over time
Time series since 2005 (2021=100). No breaks in the series.
15.3. Coherence - cross domain
Cross-domain coherence assured.
15.4. Coherence - internal
Internal coherence assured.
The Cost and Burden module is not developed yet.
17.1. Data revision - policy
In accordance with the State Statistical Office revision policy.
The data are published as final and are not subject to any revision.
17.2. Data revision - practice
The revision of data is done with changing of base year (every five years) and with changes in the classifications.
18.1. Source data
Data sources are the “Monthly report on industrial producer prices on the domestic market” (C.doma) and "Monthly survey on employees and wages" (TRUD.1).
The Material cost index is calculated on the basis of data on Industrial producer prices on the domestic market, for 96 products belonging to these classes:
08.11;
08.12;
16.10;
16.23;
20.16;
20.30;
20.52;
20.59;
22.21;
23.12;
23.20;
23.32;
23.51;
23.61;
23.62;
23.63;
23.64;
23.69;
23.70;
23.99;
24.10;
24.20;
24.34;
25.11;
25.93;
27.32.
The Labour cost indexis calculated on the basis of the average gross wages paid per employee in the Construction section, Division 41 - Construction of buildings, from the National classification of activities (NKD Rev.2).
18.2. Frequency of data collection
Monthly.
18.3. Data collection
Secondary survey, input data are extracted from primary surveys. The extractions are already processed individual data within the primary surveys.
18.4. Data validation
The input data are checked within the primary surveys. Output data (indices) are also checked before dissemination.
18.5. Data compilation
Editing, imputation are phases that are implemented in the primary surveys. Weights: Weighting is performed with data on costs from "Annual accounts of enterprises, 2021", the purchase value of spent building materials from "Annual report on spent building materials and energy, 2021" and the turnover of building materials on the domestic market from "Annual report on industry, 2021". These values are distributed according to the structure of the values of construction activities (turnover) carried out in accordance with the "Nomenclature of constructions and construction works" from the "Annual report on constructions on which works have been carried out, 2021" at the micro level (enterprise).
The output of this survey is fixed base year indices.
18.6. Adjustment
No data adjustment is made.
Not applicable.
Construction cost index for new residential buildings; Material cost index; Labour cost index.
11 June 2025
The Construction cost index for new residential buildings is calculated as a weighted average of the construction material costs index and the labour cost index. The Material cost index covers 96 different products grouped according to the National Nomenclature of Industrial Products (NNIP), in sections B – Mining and quarrying and C – Manufacturing. The Labour cost index is calculated on the basis of data on the average gross wages paid per employee in Section F - Construction, Division 41 - Construction of new residential buildings.
Secondary survey. Statistical units are defined with primary surveys.
Secondary survey. Statistical population is defined with primary surveys.
Republic of North Macedonia
Secondary survey, the reference period depends on the reference periods of the primary surveys (both are monthly surveys).
Determined by overall accuracy in primary surveys.
Indices.
Editing, imputation are phases that are implemented in the primary surveys. Weights: Weighting is performed with data on costs from "Annual accounts of enterprises, 2021", the purchase value of spent building materials from "Annual report on spent building materials and energy, 2021" and the turnover of building materials on the domestic market from "Annual report on industry, 2021". These values are distributed according to the structure of the values of construction activities (turnover) carried out in accordance with the "Nomenclature of constructions and construction works" from the "Annual report on constructions on which works have been carried out, 2021" at the micro level (enterprise).
The output of this survey is fixed base year indices.
Data sources are the “Monthly report on industrial producer prices on the domestic market” (C.doma) and "Monthly survey on employees and wages" (TRUD.1).
The Material cost index is calculated on the basis of data on Industrial producer prices on the domestic market, for 96 products belonging to these classes:
08.11;
08.12;
16.10;
16.23;
20.16;
20.30;
20.52;
20.59;
22.21;
23.12;
23.20;
23.32;
23.51;
23.61;
23.62;
23.63;
23.64;
23.69;
23.70;
23.99;
24.10;
24.20;
24.34;
25.11;
25.93;
27.32.
The Labour cost indexis calculated on the basis of the average gross wages paid per employee in the Construction section, Division 41 - Construction of buildings, from the National classification of activities (NKD Rev.2).
Monthly and quarterly.
65 days after the end of the reference period (Т+65).
The data are produced at the national level. Comparability is ensured at the international level.
Time series since 2005 (2021=100). No breaks in the series.
