Senior Counsel
Administrative Law and Public Procurement / Urban Planning and Environmental Law / Litigation and Arbitration

Yves Sacreas practices in the field of public law.
He advises and represents clients before various courts, the Council of State, the Council for Permit Disputes and the Constitutional Court on constitutional and administrative law, urban planning, environmental law, expropriation law and also criminal law.
Yves was a teaching assistant in constitutional law at KULeuven for six years and is also the author of numerous scientic contributions. He worked for 16 years at a Brussels law rm and joined Andersen in Belgium in 2022.
Publications:
Magazines and book contributions
Short annotations:
Book reviews:
Contributions to scientific support expenditure:
Research reports commissioned by policy bodies:
Miscellaneous:
Expertises
Litigation and Arbitration
Urban Planning and Environmental Law
Administrative Law and Public Procurement
Qualification
Languages
Conferences and seminars

20.03.2026
•Urban Planning and Environmental Law, Andersen in Belgium, LEGAL NEWS
On 23 March 2026, several amendments to the Soil Decree enter into force. Although these adjustments may at first glance appear largely technical, they clearly address an existing tension within Flemish soil policy: the gap between theoretical standards and their practical applicability. With this reform, the legislator explicitly opts for a more flexible and enforceable framework.

08.12.2025
•Urban Planning and Environmental Law, Andersen in Belgium, LEGAL NEWS
Permit applications must be handled fairly: applicants for urban and environmental permits may not submit new technical studies or other important documents when the parties concerned are no longer able to review or comment on them in a timely manner. Yet this practice is commonplace, much to the frustration of many applicants and their legal counsels. In a judgment of 23 October 2025, the Council for Permit Disputes (CPD) now puts an end to this.

07.11.2025
•Urban Planning and Environmental Law, Andersen in Belgium, LEGAL NEWS
The Council for Permit Disputes (RvVb) annulled, on 9 October 2025, a financial charge imposed in a decision granting an environmental permit. Such a charge may, since 2024, only be imposed on the basis of an urban planning regulation within the meaning of Articles 2.3.1 and 2.3.2 of the Flemish Code for Spatial Planning (VCRO). Prior to the amendment of the Decree, the Environmental Permit Decree did provide that such a financial charge could be imposed by the permitting authority and under what conditions, but it was not required that a regulation be included in an urban planning ordinance.

09.10.2025
•Urban Planning and Environmental Law, Andersen in Belgium, LEGAL NEWS
The Constitutional Court has ruled that construction projects initiated by local authorities, that could have a significant impact on the environment, may no longer be assessed by those authorities themselves. This not only puts current and future construction projects at risk, but also jeopardizes permits that have already been granted.