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Siep Jan de Haan

Lawyer · Six Advocaten

NetherlandsAdministrative Law, Environmental LawDutch, English

About

Lawyer at SIX Advocaten (since 2025) specializing in administrative and environmental law. He advises and litigates on matters including general administrative law, zoning and permit procedures, environmental law, and supervision and enforcement, primarily for governments and project developers.

Practice areas

Administrative LawEnvironmental LawLitigationPlanning & ZoningRegulatory & Compliance

Office

Expertise

Zoning and permit proceduresSupervision and enforcementGovernment / public sector clientsProject developersSustainable energy projects

Education

  • Bachelor's degree in Law (with honours), University of Groningen
  • Double Master's degree in Private Law and Criminal Law, University of Groningen, 2017
  • Post-academic Environmental Law specialization program, Grotius Academy, 2024

Languages

DutchEnglish