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Scottish Social Housing Tender Price Index description

Published: 12 October 2023
Directorate: Local Government and Housing Directorate

Scottish Social Housing Tender Price Index (SSHTPI) – general description of the index

Calculation: quarterly index

The quarterly index is a smoothed trimmed geometric mean of the normalised project index.

In each quarter any extreme outliers are removed and a geometric mean is calculated for the remaining project indices.

The resulting quarterly index is smoothed by averaging the previous quarter index, two times the current quarter index and the following quarter index.

A full technical specification for the calculation of the index is available from BCIS.

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Calculation: quarterly index

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