Petit Jean-Marc > Adaltys Avocats > Lyon, France > Lawyer Profile

Adaltys Avocats
LYON 69006


  • Lawyer at the DS Avocats law firm (2002-2008)
  • Lawyer and legal expert at Granjon et associés (1994-2002)
  • Legal adviser to the Léga-Cité law firm (1991-1994)


french, English


Jean-Marc Petit assists public (State, local authorities) and private (developers and promoters) project leaders in regulatory urban planning (urban planning schemes (PLU- Plan local d’urbanisme) / permits), in the setting up and management of development operations (joint development zone (ZAC- Zone d’aménagement concerté), housing estates, land divisions), in expropriation and pre-emption, and in environmental law (consultations, environmental assessments and authorisations, protected species).

He advises on setting up development operations (coordination and scheduling of procedures, auditing ZAC and public utility dossiers (DUP- Déclaration d’utilité publique) etc.), interfacing with State services, auditing development or building permits, setting up urban planning tax tools (urban partnership projects (PUP- Projets urbains partenariaux) etc.), development concessions, drafting pre-emption decisions, deliberations for the establishment of future development area (ZAD- Zone d’aménagement différé), assistance and consulting on territorial coherence schemes (SCOT- Schéma de cohérence territoriale) and PLUs (procedure, drafting, legality).

He acts in litigation: defence of SCOTs, PLUs and permits, expropriations and pre-emptions, in particular urgent cases (summary proceedings – suspension).

Jean-Marc Petit teaches urban planning law at the LYON III University and regularly leads seminars and training courses in his areas of expertise, in particular for the EFE.


  • Post-graduate degrees (DESS/DESU) in Urban Planning (Lyon II)
  • Master’s degree in public law (Lyon III)