Construction cost index for plumbing works in office and commercial buildings, January 2016

National level only.

Monthly

Not relevant

Price observations from the wholesale dealers are stored on Excel-spreadsheet.

The CCI measures the changes in the prices of input factors to the construction process of plumbing works. CCI ignores gains in productivity and changes in profit margins.

The indices are published since 1999.

The CCI is used used for contract escaltion in construction contracts between plumbing companies and building contractors

Not relevant

Some data are collected from the Consumer Price Index, Wage Statistics and Cost index for road goods transport.

Statistics Act Sections 2-2 and 2-3.

Not relevant

Construction cost indices measures the price developments of material, labour, transport, plant and other types of input factors for plumbing works in office and commercial buildings, i.e. costs incurred by the 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 tenth year through cost studies of plumbing works. The prices are measured monthly.

The material prices are collected from wholesale dealers.

The labour costs are based on Statistics Norway's quarterly wage statistics and a percentage of social security charges according to wages.

Transport costs indices compiled by Statistics Norway.

All the main suppliers of plumbing materials, provides about 325 price observations every month.

The material prices are collected by e-mail.

Reporting and record keeping burden

An outlet uses an average of 25 minutes every month to fill in the questionnaires.

The prices are put through tests, which identify observations with large price changes from the previous month. 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.

Not relevant

The construction cost index is calculated as Laspeyres Index.

Statistical releases older than 7 April 2017.

No breach in time series.