Construction cost index for road construction, Q1 2019

National level only

Quarterly

Not relevant

Quarterly price observations for goods and services are stored on UNIX.

The construction cost index measures changes in input prices for road constructions.

The cost indices ignore gains in productivity and changes in profit margins. Statistics Norway has published construction cost indices for civil engineering works since 1985. The weights are renewed in 2004. At the same time the former construction cost index for water plant is put down. The types of construction covered are open air road, concrete bridge and rock tunnel.

The indices are used to regulate the costs of construction works. At Statistics Norway the CCI (Construction cost indices) is used as deflator in the National Accounts.

Not relevant

Not relevant

Statistics Act Sections 2-2 and 2-3

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Construction cost indices measures the price developments of material, labour, transport, plant and other types of input factors in civil engineering works, i.e. costs incurred by the contractor/producer carrying out the construction work. It is two different types of information to be collected about the input factors, the percentage of each component (weights) and the prices. The weights are compiled every fifteenth year through cost studies of civil engineering works. The prices are measured quarterly.

Price data of materials are obtained from the following price indices in Statistics Norway:

Construction cost index for residential buildings Consumer Price Index Price index of first-hand domestic sales The labour costs are based on Statistics Norway's quarterly wage statistics and a percentage of social security charges according to wages.

Machinery costs indices calculated by NTNU

Transport costs indices compiled by Statistics Norway.

In addition some material, service and machinery prices are obtained exclusively for this statistics by means of questionnaires.

Some material, service and machinery prices are collected quarterly by means of questionnaires.

The prices are put through tests, which identify observations with large price changes from the previous quarter. Prices are also checked when sorted by item and when items are aggregated into groups. Sub-indices and item-indices are checked against time-series that are published earlier and comparisons with other statistics.

The construction cost index is calculated as a Laspeyre Index with fixed weights. The fixed weights are derived from project data collected from tenders and calculations, and accounting data from highway authorities.

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Statistical releases older than 5 July 2017.

It is breach in time series in the first quarter of 2004, in connection with compilation of new weights.