The Construction Cost Index (CCI) is a measure used to track changes in the cost of construction over time. It reflects price movements in the labour, materials, plant and other resources required for construction projects. A CCI is calculated by comparing the current cost of a fixed basket of construction goods and services with the cost of the same basket in a base year.
The main purposes of a CCI are to:
- Monitor inflation: a CCI helps identify trends in construction cost inflation and allows construction professionals, including quantity surveyors, to assess how costs have changed over time. This information is crucial for accurate cost estimating and budgeting.
- Adjust contract values: a CCI can be used to adjust contract values to account for cost increases or decreases, so that contractors are fairly paid for the work performed.
- Benchmark performance: a CCI serves as a benchmark for comparing the costs of different projects, or for assessing the efficiency of construction practices in different regions or sectors.
- Forecast future costs: the historical data provided by a CCI can help construction professionals make informed predictions about future cost trends, allowing them to plan projects more effectively.
Construction cost indices can vary by region, by country, or by specific sector within the construction industry. They may be published by government bodies, trade associations or private organisations. In practice, a CCI is an essential tool for quantity surveyors, project managers and other construction professionals, as it helps them produce more accurate cost estimates, manage budgets and assess the financial implications of changes in construction costs.
