#ECOO2610332VNotice Regarding National Building, Public Works Indexes and Construction Indexes (Reference 100 in 2010) and Revaluation Index for Material Assets in February 2026, Renaming of BT11 and BT55 Indexes, and Provisional Developments of Hydrocarbon Price Indices for March 2026
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This law updates the indices used to adjust and revise prices in the construction and public works sectors in France for February 2026. It affects professionals in these industries by providing them with new index values, which help in contract valuations and material asset revaluations. Key changes include the renaming of certain building index titles and provisional changes in hydrocarbon price indices. Construction companies need to review these indices for accurate pricing and contracting.
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Key Changes
- Renaming of BT11 and BT55 building index titles.
- Update of construction and public works indices for February 2026.
- Provisional changes in hydrocarbon price indices for March 2026.
Obligations
What this law requires
Construction companies must review the updated national indices for the building and public works sectors effective February 2026 for accurate pricing and contracting.
From April 15, 2026, the index BT11 title will be changed to 'Revêtements en textiles' and the index BT55 title will be changed to 'Isolation thermique par l'extérieur - Enduit sur isolant'.
Construction companies must utilize the updated index of re-evaluation of material assets (IM) for calculating charges related to the use of machinery, effective February 2026.
Construction firms must take into account the provisional changes in the prices of hydrocarbons for March 2026 when calculating project costs, despite these changes not being included in the February 2026 indices.
Companies involved in construction must access and review the updated index values published by INSEE as of April 15, 2026, to ensure compliance with indexation of contracts.