Managing Partner
Vennootschapsrecht en M&A / Handels- en Economisch Recht / Bouwrecht / Vastgoed, Huur en Mede-eigendom / Administratief Recht en Overheidsopdrachten / Ruimtelijke Ordening en Milieu / Intellectueel Eigendomsrecht & Privacy / Procedure en Arbitrage / Duurzaamheid

Koen de Puydt graduated in 1998 as a degree in Communication Sciences (VUB), while he worked for the independent music magazine RifRaf as a journalist. After his studies, he continued his career as a music journalist with De Standaard and Studio Brussel. At the same time he obtained his Licentiate Degree in Law, specializing in Public Law at the VUB (2002). In 2009 he obtained a Master of Business Law at the University of Antwerp.
In 2002, Koen joined a Brussels niche firm specializing in administrative law (urban planning and environmental law, expropriations, government contracts, and protection legislation). In the meantime he remained responsible at de Puydt-van Cauwelaert for the files relating to commercial and economic law and intellectual property law.
Two years later, Koen started working full-time at de Puydt-van Cauwelaert. He was responsible for matters relating to urban planning and environmental law, real estate law, government contracts, contracting law, commercial and economic law, corporate law and intellectual property law. He also publishes on these matters.
In 2010 de Puydt-van Cauwelaert and GD & A Advocaten merged. Koen de Puydt, as partner, headed the Real Estate / Construction Law and Corporate Law units.
Since 2002 he has been lecturer "Contracts, Assignments and Mandates" at Syntra Brussels in the vocational training for real estate agents. In the course for Real Estate Experts, Koen lesson on construction law. He is the initiator of the Property Codex, a collection of legal texts tailored to the real estate professional. The codex is used throughout Flanders in the vocational training of the real estate agents within Syntra.
In August 2012, Koen co-founded the law firm ORYS. In April 2019, Koen together with Leo Peeters of Peeters Law have decided to set up a new law firm under the name of "Seeds of Law".
Koen de Puydt has many publications to his name and gives on a regular base formations to real estate professionals.
Publications:
Expertises
Commercial and Economic Law
Construction Law
Real Estate, Renting and Co-ownership
Administrative Law and Public Procurement
Urban Planning and Environmental Law
IP and Data Protection Law
Litigation and Arbitration
Corporate Law and M&A
Sustainability
Qualification
Languages
Memberships
Conferences and seminars

01.10.2026
•Real Estate, Renting and Co-ownership, Andersen in Belgium
On 21 September 2026, the Royal Decree of 20 July 2026 approving the new Code of Ethics of the Professional Institute of Real Estate Agents (BIV) was published in the Belgian Official Gazette. The new Code enters into force on 1 October 2026, the date on which the 2018 regulations are repealed.

12.05.2026
•Sustainability, Andersen in Belgium
Sustainability claims have become an essential part of how companies communicate with consumers, as consumers increasingly expect transparency not only about environmental impact, but also about ethical and social aspects. At the same time, regulators are paying closer attention to vague or misleading claims related to sustainability performance and impacts. Against this backdrop, the European Union has adopted Directive (EU) No. 2024/825 on empowering consumers for the green transition (ECGT).

19.01.2026
•NEWS FROM THE FIRM
First, we are pleased to announce that the West Flanders team of Philippe & Partners has joined Andersen in Belgium. Based in Roeselare, the team is led by Partner Dirk Clarysse, together with Charlotte Romaen, Senior Counsel.

14.01.2026
•Real Estate, Renting and Co-ownership, Andersen in Belgium, LEGAL NEWS
By judgment of 18 December 2025, the Belgian Court of Cassation delivered a significant ruling in a disciplinary (disciplinary law / professional disciplinary proceedings) case against a real estate agent, with far-reaching consequences for the real estate profession.