Oyat avocats - Laurent de la Brosse

Laurent de la Brosse

Founding Partner · Public business law – Complex structures

Oyat avocats - Laurent de la Brosse

Member of the Paris Bar since 1999, Laurent de La Brosse co-founded Oyat in 2022.

Laurent has previously been a partner at Latournerie Wolfrom Avocats within the public business law department since 2007.

Laurent’s practice focuses on public economic law, public contracts (complex arrangements), particularly in the mobility and energy sectors, public real estate (development operations), environmental law and classified facilities.

He advises both public and private clients, in both advisory and litigation matters (including judicial mediation, conciliation and settlement).

His oyat is in the Payré estuary.


  • University of Versailles – Saint Quentin, Master’s degree in public law
  • University of Panthéon-Assas Paris II – Post graduate degree (DEA) in internal public law


French, English


  • Lecturer in Master in environmental law, safety and quality of companies at the University of Versailles – Saint Quentin where he teaches environmental law (feedback)
  • Training modules and seminars for the agents of the Court of Auditors and the Regional Chambers of Auditors on the terms and conditions for concluding partnership agreements (feedback and points of vigilance)
  • Speaker on seminars organized by the Ecole des Ponts on the theme, Conducting a property development: complex projects
  • Speaker on seminars organized by the Ecole des Ponts on the theme, Managing railway tenders in the context of the opening to competition
  • Member of the Cercle Vendéen (association of entrepreneurs)




Trophées du Droit 2024

  • Environmental litigation / Rising team
  • Renewable energy law / Rising team



Best Lawyers 2024

  • Public Law
  • Real Estate Law



Legal 500 EMEA 2024

  • Laurent de la Brosse / Leading individual – Tier 1
  • Administrative and public law – Tier 3

‘Availability, responsiveness, tight team. OYAT always provides measured, precise and well-argued opinions and analyses.’

‘Laurent de la Brosse stands out for his perspective and objectivity on each file. He has very specific expertise in public business law. He never has any preconceptions or certainties on the subjects submitted to him. Laurent de la Brosse demonstrates great perspective and great objectivity of analysis.’

‘The team is attentive and available. Offers suitable solutions.’

‘Very present and responsive team. Clear and operational answers.’

‘Laurent de la Brosse knows our requirements particularly well’

‘Multidisciplinary team, available and flexible.’

‘Responsive and competent team.’



Palmarès of “les meilleurs cabinet d’avocats en France 2024” by le Point

  • Public Law / 5 stars
  • Environmental law / 4 stars
  • Real estate law / 4 stars



Décideurs Juridiques / Leaders League 2023

/ Energy & Environment

  • Environmental litigation / Highly recommended
  • Waste management law / Excellent
  • Renewable energy law / Highly recommended
  • Classified installations for environmental protection, polluted sites and soil, industrial wastelands / Recommended

/ Public Law

  • Administrative contracts and related litigation / Excellent
  • Land management / Excellent
  • Local authority & mixed economy / Excellent
  • PPP contracts: large-cap structuring / Excellent
  • PPP contracts: mid-cap structuring / Excellent
  • Public domain / Excellent
  • Market regulation / Recommended
  • Urban planning / Highly recommended

/ Promotion & Construction

  • Advising and contracts (markets and construction) / Highly recommended
  • Real estate development / Highly recommended
  • Construction litigation (including insurance) / Highly recommended



IFLR 1000 2022

  • Project development, Real estate acquisitions / Notable Practitioner



Who’s Who Legal 2022-2023

  • Transport – Space & Satellites 2023 / Global Leader