The BT01 Index for January 2023 was published in the official journal on 03/16/2023.
The value of the BT01 Index for January 2023 is 128.4 to 121.4 in January 2022, an annual increase of 5.77% over 12 rolling months. The January index increased by 1,26% from the previous month (126.8 in December 2022).
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BT01 index variation table for January 2023
| Index BT01 January 2023 | Index BT01 December 2022 | Index BT01 January 2022 | |
| Value of BT01 index | 128.4 | 126.8 | 121,4 |
| Variation in % compared to the base | Up 1.26% | Up 5.77% |
Official source: Insee.
Our index evolution table for 2023 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.
