Brownfields and Bouygues Immobilier will transform 14 Engie sites into mixed-use urban projects.

Fourteen sites belonging to Engie's real estate portfolio are to be transformed by Brownfields and Bouygues Immobilier. The two operators plan to develop mixed-use urban projects there, combining housing, offices, shops, businesses and services according to local needs.

This transaction is part of a larger acquisition of 236 real estate assets from Engie by a consortium comprising Brownfields, Bouygues Immobilier and DMD Invest. The portfolio represents approximately 194 hectares of land and 355.000 m² of built space.

Approximately 3.400 homes are expected starting in 2029.

The 14 sites designated for urban redevelopment are spread across as many cities: Bagneux, Clermont-Ferrand, Caen, Crépy-en-Valois, La Baule, Landerneau, Laval, Le Havre, Narbonne, Poitiers, Saint-Étienne, Saint-Raphaël, Toulon and Toulouse.

Developed jointly by Brownfields and Bouygues Immobilier, the projects are expected to comprise approximately 3.400 housing units and 215.000 m² of floor space. The first phases are slated to begin in 2029, with the first building permits expected to be filed by the end of 2026.

The detailed programming for each site will be defined in conjunction with local authorities, based on the characteristics of the land and local needs.

Decontaminate and reuse already developed land

The transformation of these assets will require expertise in remediation, demolition, development, environmental engineering, and real estate development. Brownfields indicates that it will handle the various stages of redevelopment, including the transfer of environmental responsibility where permitted by applicable regulations.

The redevelopment must also include restoration work. By reusing existing industrial or economic sites, the partners intend to limit the consumption of new natural, agricultural or forest areas.

“This acquisition is part of a larger transaction with ENGIE that perfectly illustrates the strength of the Brownfields model: offering owners of real estate assets undergoing transformation an integrated solution that includes the acquisition and transfer of environmental responsibility. Thanks to its dual expertise in environmental and real estate development, Brownfields manages all stages of these asset transformations: demolition and remediation, development, and promotion, within the framework of urban projects co-created with local authorities. This allows us to produce affordable housing or commercial premises that meet local needs. We thank ENGIE for its continued confidence, as this is the third portfolio we have acquired. And we are delighted with this partnership with Bouygues Immobilier,” says Patrick Viterbo, Chairman of Brownfields.

Programs combining housing, activities and services

The future districts will not be exclusively residential. The plans may include offices, shops, business premises and various services, with the stated objective of meeting the needs identified in each area.

The partners also emphasize urban regeneration and cooling as components of these transformations. However, the precise content of these developments, their environmental performance, and the allocation of different uses remain to be defined for each site.

“Bouygues Immobilier confirms its role as a leading player in the environmental transition and the transformation of cities from within, an approach that has become essential in the face of land scarcity and the fight against soil sealing. The redevelopment of these sites into new neighborhoods will help meet the needs of the regions, particularly in terms of housing, businesses, shops, and land conservation. Through this urban regeneration approach, we are contributing to building more resilient cities, where rewilding and urban cooling become concrete solutions to the challenges of mitigating and adapting to the effects of climate change,” says Emmanuel Desmaizières, CEO of Bouygues Immobilier.