William Timmermans

William Timmermans

Real Estate and Regulatory

Dutch, French, English and Spanish

Admitted to the Brussels Bar: 1996

William advises clients on all types of regulatory issues (administrative law) and represents clients before the courts and before the Council of State, Belgium’s highest administrative court. William particularly focuses on public procurement law: he regularly assists tenderers, contractors and contracting authorities in tender proceedings and in the performance of public contracts. His team has also been involved in several public-private partnerships (PPPs).

Furthermore, William has developed strong expertise in the energy and pharmaceutical sectors and often advises companies on the Belgian legal framework in these fields.

William also has extensive experience in all areas of real estate law, advising clients on a broad range of real estate matters in both public and private law. He focuses on environmental and town planning issues.

William is a member of the Lawyers Association for Public law; the forum for environmental lawyers; and the professional association of the Real Estate sector (BVS).

Clients appreciate his"fast and accurate responses and constructive thinking" in addition to his "pragmatic approach" and litigation expertise. - Chambers Europe, 2019

"Practical and operational approach," coupled with his "strong expertise in contractual and litigation matters." - Chambers Europe, 2018

William Timmermans is recommended in Chambers & Partners in 2019 and 2020.


  • LL.M. (Harvard Law School)
  • Erasmus Exchange Programme (Universidad de Salamanca)
  • Lic. Juris (Katholieke Universiteit Leuven)

Selection of publications

"European Public Procurement Law: The Public Sector Procurement Directive 2014/24/EU Explained through 30 Years of Case Law by the Court of Justice of the European Union.", Wolters Kluwer Law & Business, 2015 (with C. De Koninck and T. Ronse), second edition

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