The BT01 Index for May 2023 was published in the official journal on 07/16/2023.
The value of the BT01 Index for May 2023 is 126.4 to 126.4 in May 2022, with no change over 12 rolling months. The May index decreased by 3,14% from the previous month (130.5 in April 2023).
BT01 index variation table for May 2023
|Value of BT01 index||126.4||130.5||126.4|
|Variation in % compared to the base||Down 3.14%||No change|
Official source: Insee.
Our index evolution table for 2022 has been updated here: BT01 Index 2023.
The BT01 Index (base 100 in 2010) measures changes in the cost of factors of production in the Building Industry (salaries and expenses, cost of materials, energy, etc.). It is the official reference for updating and revising construction contract prices.
The Index is published each month by INSEE with a 3-month delay. It thus succeeded the Index of the Building and public works (1974 and 1975), which was stopped. Most companies in various construction trades (electricity, painting, masonry, etc.) are concerned with the BT01 Index.
Download the values of all BT indexes for May 2023:
Frequently asked questions about the BT01 index for May 2023
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