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PRESS RELEASE

PRESS RELEASE

TECHNICAL INFO:
MURAT TARHAN
INFO REQUEST:
Data Dissemination Group
+90 312 454 75 01    
+90 312 454 72 65
murat.tarhan@tuik.gov.tr
bilgi@tuik.gov.tr
  /tuikbilgi
/tuikbilgi
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Construction cost index (CCI), is the price index that measures the changes in construction costs in terms of labor and materials. The Statistical Classification of Products by Activity (CPA Version 2.1) is used.

In order to determine the material and workmanship and their weights, 77 construction projects were analyzed to represent construction types, resulting in about 2,300 products and weights. The cost index is calculated for each type of structure resulting from matching these products with the related price index in the lowest detail.
 
The construction cost index for the 2015 base year is published in labour, materials and aggregate breakdowns based on the CPA Version 2.1 classification for construction types.
 
The headlines published according to CPA Version 2.1 are as follows:
F. Construction 
    41 Buildings
41.00.1 Residential building
41.00.2 Non residential buildings 
    42 Civil Engineering 
42.1 Roads and railways 
42.2 Utility projects 
42.9 Other civil engireering projects      
Geographical coverage: Turkey. 
 

Index formula:  Fixed based year Laspeyres
 
Reference period: 2015 =100.
 
Frequency of weight updates: 5 years.  (Years ending with 0 and 5)
 
Publication period: Monthly 

Substance weights used in the calculation of the construction cost index for the 2015 base year are calculated by using the input amounts determined by analyzing the approximate cost and final account files of the construction projects obtained from various public institutions and organizations and the unit prices of the year 2015.
 
In the weighting of building types, building registration data is used for buildings and National Account data is used for civil engineering.

In the calculation of the new series with 2015 = 100 base year and current weight structure, Domestic Producer Price Index, Consumer Price Index and Social Security Institution data are used in the bottom detail.
 
In order to determine the material and workmanship and their weights, 77 construction projects were analyzed to represent construction types, resulting in about 2,300 products and weights. The cost index is calculated for each type of structure resulting from matching these products with the related price index in the lowest detail.
 
For the statistics produced in the scope of this press release, revision is not foreseen in the current year. Any future revision shall be publicly announced.

The construction cost index results of the relevant month are announced to the public by a news bulletin at 10:00 am during the last week of the following second month according to the publication schedule determined by the national data publication calendar.
 
The data is distributed simultaneously to all interests via the database and newsletter. It is not possible for other institutions to reach the authorities before the public disclosure. Information on method changes and index updates are publicly announced