Ecological surveys
Boulogne-Billancourt, Île-de-France

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

Updated 16 July 2026

Boulogne-Billancourt · Île-de-France

Ecological surveys in Boulogne-Billancourt.

In Boulogne-Billancourt, the ecological question arises in a very dense setting, where offsetting is practically impossible for lack of available land, which makes avoidance and reduction not only preferable but economically decisive. The stakes are concentrated on the banks of the Seine, the street trees and the parks, and on the protected species present in the existing building stock, which must be taken into account before demolition or major restructuring. Our ecologists carry out the building survey, the fauna and flora surveys, the ecological chapter of the impact assessment and the protected-species derogation application.

In Boulogne-Billancourt, 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 Boulogne-Billancourt: 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 Boulogne-Billancourt and the surrounding area.

Our teams travel from Aix-en-Provence to Boulogne-Billancourt and the neighbouring municipalities of the 92 department.

Boulogne-Billancourt
Issy-les-Moulineaux
Sèvres
Meudon
Saint-Cloud
Vanves
Malakoff

FAQ

FAQ, ecological surveys in Boulogne-Billancourt

The area around Boulogne-Billancourt 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 Boulogne-Billancourt and its area to secure the project's regulatory timetable.

A project in Boulogne-Billancourt? Let's talk.

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