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mr. L. (Leon) Mathey

mr. L. (Leon) Mathey



Leon specialises in administrative law, with an especial focus being on environmental and planning law. Government authorities in particular turn to Leon for legal assistance, but so do businesses and individuals. Spatial planning, environmental law and enforcement prevail and large energy transition projects such as wind parks and solar parks as well as housing estates and sports parks have all come about thanks, in part, to Leon’s efforts.

As he works for authorities as well as for businesses and individuals, Leon knows how to create the necessary connections in order to prevent or remedy a dispute. By quickly getting to the root of the dispute (or possible dispute), Leon makes the issue more manageable and this helps the parties come together more quickly. Communication is just as important here as the legal side of the matter, both in and outside the court. Leon’s extensive experience in administrative relationships is advantageous for all his administrative law clients. He likes to share his knowledge by giving workshops and courses.

Year of swearing-in



Administrative Law

Energy Law




Dutch Law University of Groningen


Board member of Stichting Bestuursrecht Noord Nederland

Member of Vereniging voor Milieurecht


Dutch & English

What Leon can help you with:


Energy Law

Lawyers in energy Law Virtually CO2-neutral by 2050: it’s a tough ambition. Market players and governments are working on it and there is a quick succession of initiatives in the energy sector. Of course, all these plans need to be carefully implemented and comply with all laws and regulations. Moreover,…