1. Contact | ||||||||
1.1 Contact organisation | ||||||||
National Institute for Statistics (Istat) | ||||||||
1.2 Contact organisation unit | ||||||||
Directorate for Business Statistics (DCSE) Division for Statistics on Production and Foreign Trade | ||||||||
1.3 Contact name | ||||||||
1.4 Contact person function | ||||||||
1.5 Contact mail address | ||||||||
Via Tuscolana, 1788; 00173 Rome, Italy | ||||||||
1.6 Contact email address | ||||||||
1.7 Contact phone number | ||||||||
1.8 Contact fax number | ||||||||
2. Metadata update | ||||||||
2.1 Metadata last certified | ||||||||
12/15/2016 | ||||||||
2.2 Metadata last posted | ||||||||
12/15/2016 | ||||||||
2.3 Metadata last update | ||||||||
04/03/2017 | ||||||||
3. Statistical presentation | ||||||||
3.1 Data description | ||||||||
Indici dei costi di costruzione di un fabbricato residenziale - Construction cost index for residential buildings. The type of index measures the variation over time of the prices of the factors employed in the activity of construction. These factors are: materials costs, wages and salaries, plant and equipment hire, transport. | ||||||||
3.2 Classification system | ||||||||
Construction Classification: costs are grouped by four components: wages, materials, hire charges, transport charges. The indices are published according to the construction breakdowns at the group levels but not at the category nor product level. The classification is a non-standard one. | ||||||||
3.3 Coverage - sector | ||||||||
NACE Rev. 2 Division 41. | ||||||||
3.4 Statistical concepts and definitions | ||||||||
The index is broken down into four groups of costs: i) Labour costs: wages and salaries ii) Materials costs; iii) Hire charges; iv) Transport charges. The groups contain several categories that are different in name and number. 2. Materials costs 3. Hire costs 4. Transport costs | ||||||||
3.5 Statistical unit | ||||||||
Reporting unit: Industrial Enterprises (survey on output prices on the domestic market) and Regional Civil Engineering Offices. Observation unit(s): Labour, Hire and transport costs; Materials prices. | ||||||||
3.6 Statistical population | ||||||||
200 production enterprises. | ||||||||
3.7 Reference area | ||||||||
3.8 Coverage - Time | ||||||||
Indices on residential building are available since 1967. | ||||||||
3.9 Base period | ||||||||
The base period is December 2015 . Reference year is 2010. | ||||||||
4. Unit of measure | ||||||||
Indices. | ||||||||
5. Reference Period | ||||||||
Month. | ||||||||
6. Institutional Mandate | ||||||||
6.1 Institutional Mandate - legal acts and other agreements | ||||||||
Legal basis: 1) National level: this is one of the compulsory surveys fixed every year by a Decree of the President of the Republic (D.P.R.). 2) European level: Council Regulation No 1165/1998 concerning short-term statistics, amended by the Regulation No 1158/2005. Obligation on units to provide data: Surveys are mandatory. Penalties are foreseen for non-response. Planned changes in legal basis, obligation to respond and frame used: None. | ||||||||
6.2 Institutional Mandate - data sharing | ||||||||
Eurostat and OECD. | ||||||||
7. Confidentiality | ||||||||
7.1 Confidentiality - policy | ||||||||
Confidentiality provisions are explicitly stated in the Istat President’s letter attached to data collection questionnaire along with references to different legal acts on statistics. Links to relevant legal acts on statistics are also listed on the website of Sistan - National Statistical System - (http://www.sistan.it/index.php?id=203). | ||||||||
7.2 Confidentiality - data treatment | ||||||||
Cost series are not published. Costs indexes are disseminated for groups of costs. | ||||||||
8. Release policy | ||||||||
8.1 Release calendar | ||||||||
Every year, in December Istat publishes a release calendar providing the precise release dates for the coming year. The calendar is distributed to the press and is available free of charge to interested parties. The calendar is also disseminated on Istat's website. | ||||||||
8.2 Release calendar access | ||||||||
Press release calendar: http://www.istat.it/en/information/journalists/press-calendar | ||||||||
8.3 Release policy - user access | ||||||||
Since April 2016 (January 2016 data) Construction cost indices for residential buildings and for road sections press release has been merged with production in construction (IPC). Data are released simultaneously to all interested parties by issuing the press release “Produzione nelle costruzioni e costi di costruzione”. The release (both in Italian and English version “Production in the construction sector and construction costs”) is subsequently posted on the Istat website (http://www.istat.it/en/). No pre-release access. | ||||||||
9. Frequency of dissemination | ||||||||
Monthly. | ||||||||
10. Accessibility and clarity | ||||||||
10.1 Dissemination format - News release | ||||||||
Data are disseminated since April 2006 through a new monthly press release “Produzione nelle costruzioni e costi di costruzione”. The release (both in Italian and English version “Production in the construction sector and construction costs”) is posted on the Istat website. Archive of press release is accessible at http://www.istat.it/en/archive/construction+costs | ||||||||
10.2 Dissemination format - Publications | ||||||||
Indices are also published in the Statistical Yearbook (http://www.istat.it/it/archivio/171864) | ||||||||
10.3 Dissemination format - online database | ||||||||
Data are disseminated in I.Stat http://dati.istat.it/?lang=en, theme Prices, sub-theme Production prices, dataset Construction costs index - monthly data The on-line database I.Stat is open and free, statistics are organised by theme in a two-level hierarchical tree. Data are presented in aggregate form in multidimensional tables; acting on variables, reference periods and the arrangement of heads and sides users can create custom tables and graphs. The system can be searched by keyword, theme and region. More information available in the User Guide: http://dati.istat.it/ModalHelp/Istat/WBOS%20User%20Guide%20%28EN%29.PDF | ||||||||
10.4 Dissemination format - microdata access | ||||||||
Not available. | ||||||||
10.5 Dissemination format - other | ||||||||
Data are also transmitted to Eurostat via Edamis. | ||||||||
10.6 Documentation on methodology | ||||||||
A short description of the methodology and characteristics of the survey is contained in the technical explanatory note included in the release and updated regularly. | ||||||||
10.7 Quality management - documentation | ||||||||
A description of methodology and sources used in preparing statistics is also contained in the Information System for Survey Documentation and Quality Control (Siqual); it is available on Istat’s website http://siqual.istat.it/SIQual/welcome.do. This system manages qualitative information related to each single phase of a survey’s production process (http://siqual.istat.it/SIQual/visualizza.do?id=7777813&refresh=true&language=EN). | ||||||||
11. Quality management | ||||||||
11.1 Quality assurance | ||||||||
CCI benefits data already after quality checks performed in the labour cost and producer price surveys. This is the reason why “quality” assessments refer the data sources only in their own context. | ||||||||
11.2 Quality management - assessment | ||||||||
Timeliness, coverage and relevance are in line with the other STS indicators compiled by Istat but this survey has not been submitted to a specific audit on quality yet. | ||||||||
12. Relevance | ||||||||
12.1 Relevance - User Needs | ||||||||
CCI are relevant both for Italian and Eurostat users. | ||||||||
12.2 Relevance - User Satisfaction | ||||||||
Not available. | ||||||||
12.3 Completeness | ||||||||
Eurostat’s requirements in term of time series are fulfilled. Furthermore, CCI actually meets the Italian users needs of information. | ||||||||
13. Accuracy | ||||||||
13.1 Accuracy - overall | ||||||||
Accuracy is measured in terms of distance between provisional and final data. | ||||||||
13.2 Sampling error | ||||||||
Construction cost indices are derived from Labour and Producer prices surveys data. Hire and Transport costs are administrative data. No sampling error are compiled. | ||||||||
13.3 Non-sampling error | ||||||||
Producer price and Labour surveys provide quality checked data for Construction cost indices. | ||||||||
14. Timeliness and punctuality | ||||||||
14.1 Timeliness | ||||||||
Publication is released 45-50 days after the end of the reference period, exceptionally January 2016 data were released after 80 days due to a renewed press released. | ||||||||
14.2 Punctuality | ||||||||
All releases delivered according to the timetable. | ||||||||
15. Coherence and comparability | ||||||||
15.1 Comparability - geographical | ||||||||
The CCIs are compiled at national level using European definitions. | ||||||||
15.2 Comparability - over time | ||||||||
Istat calculates CCI since 1967. Time series breaks are the following: [1967-1970; base 1966]; [1971-1976; base 1970]; [1977-1980; base 1976]; [1981-1990; base 1980]; [1991-1995; base 1990]; [1996-2001; base 1995]; [2002-2008; base 2000]; [2009-2012; base 2005];[2013- ; base 2010] | ||||||||
15.3 Coherence - cross domain | ||||||||
Coherence is insured for Labour costs since data are derived by the Istat survey on Labour cost index; Material costs are derived by the Istat survey on PPI on domestic market; while Hire and Transport costs are mainly collected by price lists received by the Regional Civil Engineering and C Offices and Chambers of Commerce, Industries, Crafts and Agriculture. | ||||||||
15.4 Coherence - internal | ||||||||
The total CCI is a weighted mean (Laspeyres type index) of groups of costs indexes: labour, materials, hires and transports. Internal coherence is straightforward. | ||||||||
16. Cost and Burden | ||||||||
The cost estimate is compiled in terms of total number of hours worked (THW). It is equal to the product of three terms: (total) Annual Working Days (AWD), (total) Hours Worked per Day (HWD), Number of Persons involved in the Survey (NPS).
No burden for respondents (reporting units) because Construction Costs Indices are compiled without external data collection. | ||||||||
17. Data revision | ||||||||
17.1 Data revision - policy | ||||||||
On a monthly basis, provisional and final indexes are disseminated. Data concerning the current month are provisional while those applied to the previous months are final. No other revision is calculated. Generally, major changes in methodology, sources and statistical techniques are announced through ad hoc publications. | ||||||||
17.2 Data revision - practice | ||||||||
Differences between provisional and final data are due to coverage achieved in data sources (Labour and Producer price surveys). | ||||||||
18. Statistical processing | ||||||||
18.1 Source data | ||||||||
Type of source: Different types of a sources are used. Labour and Material costs are respectively recorded by Istat surveys on Wages and Producer prices. Hire and Transport charges derive from administrative source : Regional Civil Engineering Offices and Chambers of Commerce, Industries, Crafts and Agriculture. Frame on which the source is based: None. Sample or census: None Criteria for stratification: Not applicable. Threshold values and percentages: Not available. Frequency of updating the sample: The sample is updated every year. | ||||||||
18.2 Frequency of data collection | ||||||||
Construction costs indices for residential buildings and Construction cost indices for roads are compiled monthly. | ||||||||
18.3 Data collection | ||||||||
Questionnaires used in the survey: None Planned changes in national questionnaires: None Data collection media: None. Planned changes in data collection methodology: None. | ||||||||
18.4 Data validation | ||||||||
Before computing the index, data are quality-checked by observing both levels and rates of change. | ||||||||
18.5 Data compilation | ||||||||
The elementary national indices of each cost item are obtained by relating the cost observed during the month in question to the average monthly cost recorded in the base year 2015 and then these elementary indices are aggregated in groups of costs indices using the Laspeyres formula. Indices are then transformed in base 2010=100 by data chaining. | ||||||||
18.6 Adjustment | ||||||||
Seasonally adjusted indices are not calculated. | ||||||||
19. Comment | ||||||||
None. |