Jacques Johner
Jacques Johner

Jacques Johner

Senior Associate, Geneva/Lausanne

65 rue du Rhône | Case Postale 3199 | CH-1211 Geneva 3 | Switzerland
65 rue du Rhône | Case Postale 3199 | CH-1211 Geneva 3 | Switzerland
T +41 58 552 05 56


Jacques Johner is a senior associate lawyer in both MLL’s Real Estate and Dispute Resolution teams in Geneva and Lausanne. His practice includes real estate, construction law, land and use planning law, as well as public procurement law and other aspects of public law. He is also a member of the competition and distribution practice group

Jacques Johner holds a Certificate of Advanced Studies in Legal Professions (ECAV) delivered by the University of Geneva. He previously obtained a bachelor’s degree and a master’s degree in law from the University of Lausanne, with specializations in business law and in litigation, magna cum laude.

Prior to joining MLL, in 2015 as a junior associate, Jacques Johner worked for five years as an in-house lawyer for the City of Lausanne, in the energy and telecommunications department.

He is a native French speaker and his working languages are French, English, Italian and German.

Industry Groups

Rankings & Awards

Legal 500 Comparative Guide Construction 2022Legal 500 Comparative Guide Construction 2021

Deals & Cases

  • Advised a major Swiss bank and one of its managed vehicles in the acquisition of a new commercial building housing a food production plant (sale & lease-back transaction)
  • Advised Generali in the acquisition of a real estate portfolio comprising two residential and two mixed-use buildings located in Geneva
  • Advised a major Swiss bank and several of its managed vehicles in the acquisition of a group of residential buildings under construction in the Geneva’s Lake area
  • Advised a prominent Swiss real estate fund in the acquisition of a group of newly built residential buildings part of a large construction project comprising condominium apartments and a hotel complex
  • Advised one of the major Swiss real estate fund in the acquisition of a large commercial building in Geneva from a company abroad and in the continuation of the lease agreement in force with the sole tenant, during Covid-19 crisis
  • Jacques advised several institutional investors in real estate transactions and construction projects in French-speaking Switzerland, with values ranging from CHF 30 to 300 million
  • He advised Sunrise Communications Group Ltd. with respect to real estate in the signing of a binding agreement to acquire UPC Switzerland GmbH for an enterprise value of CHF 6.3 billion
  • Jacques advised NASDAQ listed Masimo Corporation headquartered in California in its acquisition of a new business facility for its Swiss subsidiary in Neuchâtel
  • He successfully represented 3 owners against the City of Geneva in the context of a project to raise the height of 4 buildings

Education & Admission

  • Trained in collaborative law (2022)
  • Admitted to the Bar in Switzerland (2016)
  • University of Geneva, Certificate of Advanced studies in Legal Professions, ECAV (2013)
  • University of Lausanne, Master of Law (MLaw) with majore in Business Law and in litigation, magna cum laude (2010)
  • University of Lausanne, Bachelor of Law (BLaw) (2008)

Memberships and public offices

  • Geneva Bar Association
  • Swiss Bar Association


  • French
  • English
  • Italian
More by Jacques Johner


Construction & Engineering Law 2022 – Switzerland

International Comparative Legal Guide - Construction & Engineering Law 2022, Ninth Edition, Chapter 19, Switzerland, pages 162-170, Published and reproduced by Global Legal Group Ltd, London
  • EN

Droit des énergies renouvelables : la refonte du cadre légal est en cours

Tribune de Genève, FOCUS Énergie et Développement durable 2022, 22 juin 2022
  • FR

Construction 2022 – Switzerland

The Legal 500 Country Comparative Guides 2022, 2022 Legalease Ltd., 4 May 2022
  • EN

Les grands travaux dans la propriété par étages

ARPPE – Alliance Romande des Propriétés Par Etages, Newsletter 02 - Deuxième semestre 2021
  • FR