Matias Osorio Olivera
Counsel
Administrative Law and Public Procurement / Urban Planning and Environmental Law / Litigation and Arbitration / Real Estate, Renting and Co-ownership
Your trusted partner with a focus on results. Driven by knowledge, creative in approach.
Matias graduated with distinction in 2019 with a Master of Laws from the Vrije Universiteit Brussel.
After completing his studies, he began his career as a property manager for the municipality of Zemst, where he developed a strong interest in Administrative- and Property Law.
In 2020, he joined the law firm LM&DS in Mechelen, where he further specialized in Administrative Law, with a particular focus on Environmental Law (spatial planning and environmental regulations).
Since 2025, he has continued his legal career at Andersen in Belgium, as part of the Real Estate and Public Law team, which also focuses on Environmental Law.
Over the years, he has built up extensive experience in these fields, as well as in the closely related areas of Real Estate- and Property Law. He advises companies, public authorities, and private clients on complex legal issues related to spatial planning, environmental matters, and real estate.
He was registered at the Antwerp Bar in 2020. He is also a member of the Brussels Bar since 2025.
He is also a member of the Municipal Commission for Spatial Planning (GECORO) of the city of Mechelen for the 2025-2030 legislative period.
Since 2025, he has also been an author with Wolters Kluwer and has already published several academic articles. In May 2026, he was appointed Editorial Secretary of the legal journal Tijdschrift voor Milieurecht en Ruimtelijke Ordening.
Publications:
- OSORIO OLIVERA M., “Commentaar bij art. 78 OVD – Het zakelijk karakter van de omgevingsvergunning” in X., Omgevingsvergunning. Artikelsgewijze commentaar met overzicht van rechtspraak en rechtsleer, Afl. 2, Wolters Kluwer, 2025, 97-113.
- OSORIO OLIVERA M., “Commentaar bij art. 79 OVD – De overdracht van de omgevingsvergunning” in X., Omgevingsvergunning. Artikelsgewijze commentaar met overzicht van rechtspraak en rechtsleer, Afl. 2, Wolters Kluwer, 2025, 115-124.
- OSORIO OLIVERA M., “Commentaar bij 4.3.5 VCRO – De voldoende uitgeruste weg” in X., Omgevingsvergunning. Artikelsgewijze commentaar met overzicht van rechtspraak en rechtsleer, Afl. 1, Wolters Kluwer, 2025, 15-34.
- OSORIO OLIVERA M., “Commentaar bij art. 4.2.1, 1° VCRO – De vergunningsplichtige bouwwerken” in X., Omgevingsvergunning. Artikelsgewijze commentaar met overzicht van rechtspraak en rechtsleer, Afl. 2, Wolters Kluwer, 2025, 1-16.
- OSORIO OLIVERA M., “Commentaar bij art. 4.2.1, 6° VCRO – De vergunningsplichtige functiewijzigingen” in X., Omgevingsvergunning. Artikelsgewijze commentaar met overzicht van rechtspraak en rechtsleer, Afl. 2, Wolters Kluwer, 2025, 29-42.
- OSORIO OLIVERA M., “Commentaar bij art. 4.4.23 VCRO – De zonevreemde functiewijzigingen” in X., Omgevingsvergunning. Artikelsgewijze commentaar met overzicht van rechtspraak en rechtsleer, Wolters Kluwer, 2025, in redactie.
Expertises
Litigation and Arbitration
Urban Planning and Environmental Law
Administrative Law and Public Procurement
Real Estate, Renting and Co-ownership
Qualification
- Bachelor of Laws - UA (Universiteit Antwerpen) - 2017
- Master of Laws - VUB (Vrije Universiteit Brussel) - 2019 (cum laude)
Languages
- Dutch
- English
- German
- French
- Spanish
Memberships
Legal News
29.09.2026
•Urban Planning and Environmental Law, Andersen in Belgium
Financially contributing to a spatial implementation plan (RUP) poses a risk to your permit
A developer who contributes financially to the drafting of a spatial implementation plan may thereby jeopardize their integrated environmental permit. This follows a ruling by the Council for Permit Disputes dated September 17, 2026. The ruling addresses a practice that is widespread throughout Flanders.
17.09.2026
•Urban Planning and Environmental Law, Andersen in Belgium
Health organisations to become part of the public concerned in urban and environmental permitting procedures
Non-governmental organisations dedicated to protecting human health will soon be able, like environmental protection organisations, to qualify as part of the “public concerned” in urban and/or environmental permitting procedures. This will broaden the range of organisations that may challenge a permitting decision, adding a new dimension to future permitting procedures.
08.09.2026
•Real Estate, Renting and Co-ownership, Andersen in Belgium
Flanders Cracks Down on Substandard Housing with Significantly Higher Fines
Are you renting out a home with serious quality defects? If so, you risk criminal prosecution. Starting today, penalties for renting substandard housing in Flanders will be significantly increased. A fine can reach up to 800,000 euros under aggravating circumstances. At the same time, judges will have greater discretion to tailor the penalty to the severity of the offense.
04.09.2026
•Urban Planning and Environmental Law, Andersen in Belgium
Faster Permitting Process in Brussels?
The Brussels-Capital Region aims to process urban planning permits and certificates more quickly going forward. A new circular sets ambitious deadlines for Urban, the regional administration for urban planning and heritage. However, these are internal targets, not new legal deadlines. If they are not met, this will not, in itself, affect your permit or certificate application.