Ecological surveys
Saint-Denis, Île-de-France

Ecological and biodiversity surveys in Saint-Denis: four-season fauna and flora surveys, VNEI, CNPN application, Natura 2000 impact assessment and the mitigation hierarchy (Avoid-Reduce-Offset, "ERC").

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Updated 16 July 2026

Saint-Denis · Île-de-France

Ecological surveys in Saint-Denis.

In Saint-Denis, the area's industrial heritage creates a twofold constraint that projects often discover late: on the one hand soil contamination, which falls under a separate discipline but conditions the timetable, and on the other a sometimes remarkable brownfield biodiversity, developed on those same abandoned sites. The banks of the Seine and the canals also form corridors identified in the regional green and blue infrastructure. Our ecologists carry out the fauna and flora surveys, the survey of protected species in buildings, the ecological chapter of the impact assessment and the derogation application.

In Saint-Denis, the wealth of natural habitats (Natura 2000 sites, ZNIEFF, protected species) makes ecological survey work a structuring prerequisite for development. Four-season surveys, VNEI, CNPN application and the mitigation hierarchy secure environmental authorisation and planning permission.

Our services

Ecological surveys in Saint-Denis: what we do.

Four-season fauna and flora surveys

Ecological chapter of the impact assessment (VNEI)

Protected-species derogation application (CNPN)

Natura 2000 impact assessment

Mitigation hierarchy (Avoid-Reduce-Offset) and offset measures

Coverage area

Ecological surveys in Saint-Denis and the surrounding area.

Our teams travel from Aix-en-Provence to Saint-Denis and the neighbouring municipalities of the 93 department.

Saint-Denis
Aubervilliers
Saint-Ouen-sur-Seine
La Courneuve
Pierrefitte-sur-Seine
Épinay-sur-Seine
Stains

FAQ

FAQ, ecological surveys in Saint-Denis

The area around Saint-Denis concentrates high biodiversity stakes (Natura 2000 sites, ZNIEFF, protected species and habitats). As soon as a project is likely to affect natural habitats, an ecological survey conditions the environmental authorisation, the impact assessment and the planning permission: fauna and flora surveys over a full biological cycle, impact assessment and the Avoid-Reduce-Offset mitigation hierarchy.
Yes: fauna and flora surveys across the four seasons, ecological chapter of the impact assessment (VNEI), Natura 2000 impact assessment, and protected-species derogation application (CNPN) with the definition and monitoring of ERC measures. Our ecologists work in Saint-Denis and its area to secure the project's regulatory timetable.

Other locations

Ecological surveys across the region.

Ecological surveys in Aix-en-Provence NORMAXIS in Île-de-France Ecological surveys in Paris Ecological surveys in Nanterre Ecological surveys in Boulogne-Billancourt Ecological surveys in Versailles Ecological surveys in Cergy

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