Oriane Fievet


Oriane is a lawyer in the Real Estate – Construction – Urban Planning, Environment and industry and Energy and infrastructure teams of Kalliopé.

She advises and litigates with promoters, manufacturers, investors and project developers on all their real estate issues, as well as on the environmental regulations applicable in all sectors of activity.

She has extensive experience in the real estate, construction, construction insurance and environmental sectors.


Real Estate – Construction – Urban Planning

Environment and industry

Energy and infrastructure

Legal experience

Real estate – Construction

  • structuring, acquisition and management of real estate assets
  • contracts for the marketing and sale of real estate assets
  • property development and construction/restructuring operations
  • rental relationships, particularly in the context of complex buildings or shopping centres
  • restructuring of real estate complexes
  • legal audits
  • monitoring of complex real estate disputes (rental relations, acquisitions and disposals, construction, etc.)
  • “greening” of real estate assets (labels and certifications, energy performance and environmental quality of buildings, tertiary decree, etc.)


  • strategy for the rehabilitation of industrial sites, in relation with the public authorities and establishment of various consultations on the risks inherent in environmental constraints (compatibility with uses, establishment of public utility easements, third party applicant procedures, etc.)
  • carrying out legal audits and negotiating environmental contractual clauses during restructuring operations, disposals or acquisitions or leases of real estate assets or companies, as well as industrial assets or activities
  • defining pre-litigation and litigation strategies
  • representation in the context of legal expertise and civil, administrative, commercial and criminal litigation in environmental law


  • land aspects of renewable energy projects
  • audit of wind farms on real estate issues
  • drafting of lease promises and leases of various types and ancillary agreements (overhanging easement, reservation for the installation of a measuring mast, etc.) for the development of wind projects
  • advice on the development of rooftop photovoltaic parks (integration with the building and overlaying) and on the ground for real estate issues
  • drafting of various types of leases and promises to lease for the development of rooftop and ground-mounted photovoltaic parks (integrated into the building and overlaying)

Sector experience

  • Real estate investment
  • Real estate development
  • Renewable energies
  • Waste and circular economy

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French, English

Professional background

  • Since 2019 Lawyer, Kalliopé, Paris
  • 2016-2019 Lawyer, Construction Law, Karila, Paris

Academic background

  • 2016 CAPA
  • 2015 Paris I Panthéon-Sorbonne University, Master II in Construction, Urban Planning and Contracts
  • 2013 Paris I Panthéon-Sorbonne University, Master II in Advanced Heritage Law


Oriane is registered on the list of volunteers of the Paris Bar Association providing free consultations for women victims of domestic violence.

She is also concerned by the problems related to the restoration of historical monuments and has participated in several volunteer projects.

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