For legal practitioners in Belgium, the desire to expand a practice beyond regional borders is a common professional ambition. However, establishing a cabinet secondaire en Flandre—or a secondary office in the Flanders region—presents a complex landscape of deontological obligations. As the legal profession becomes increasingly mobile, understanding the precise regulatory framework governing secondary establishments is essential for maintaining professional compliance and ensuring that lawyers do not inadvertently breach the ethical standards set forth by the Order of Flemish Bars (Orde van Vlaamse Balies).
The core principle governing legal practice in Belgium is centered on the concept of a “principal establishment.” According to the established Code of Deontology for lawyers, every lawyer must maintain a primary office where they conduct the majority of their professional activities. While the rules allow for the flexibility of opening secondary offices, this expansion is subject to strict conditions designed to protect the integrity of the profession and ensure the lawyer remains accessible to both clients and the courts.
Understanding the Regulatory Framework
The regulatory requirements for secondary offices are not merely administrative hurdles; they are safeguards for professional dignity and client representation. A lawyer seeking to operate a secondary office must ensure that the practice remains secondary in nature. This means that the primary office must remain the hub of the lawyer’s professional life. If the volume of work at a secondary location begins to rival or exceed that of the primary office, the lawyer is obligated to either re-designate their principal establishment or seek a formal derogation from the Bâtonnier (the head of the local Bar association).
the establishment of a secondary office requires prior authorization from the relevant Bar councils. This ensures that the lawyer’s professional activities remain transparent and that the local Bar is fully informed of where their members are practicing. The necessity for transparency extends to the lawyer’s outward-facing communications, including stationery and digital platforms.
Key Compliance Requirements for Secondary Offices
To remain in good standing, legal professionals must adhere to several non-negotiable standards when expanding their reach:
- Prior Authorization: Lawyers must obtain the necessary approval from the Council of the Order for any secondary establishment.
- Professional Accessory Rule: The practice at a secondary location must be accessory to the primary office. Any shift in this balance requires official notification or authorization.
- Stationery and Digital Branding: A lawyer is required to maintain consistency in their professional identity. This includes using the same letterhead for all locations and clearly listing the addresses of both primary and secondary offices on their official website.
- Dignity and Effectivity: The number of secondary offices must be reasonable, ensuring that the lawyer can effectively manage their caseload while upholding the dignity of the profession.
Why Professional Ethics in Expansion Matter
The ethical nuances of operating across different jurisdictions—particularly between the French-speaking and Dutch-speaking bars—require a careful balance. The Code of Deontology emphasizes that lawyers must avoid any compromise to their independence. When a practitioner opens an office in a region governed by a different linguistic or administrative branch of the Bar, the risk of confusion regarding applicable rules increases. Practitioners are encouraged to consult their local Bar authorities before finalizing any lease agreements or public announcements to ensure full compliance with regional statutes.
For those navigating these requirements, the primary point of contact should always be the Council of the Order within their home Bar. They are the authoritative body for granting the required permissions and providing guidance on how to structure a multi-office practice that meets the standards of professional conduct. As regional laws evolve, staying updated with the official communications from the Orde van Vlaamse Balies is the most effective way to avoid administrative penalties.
Looking Ahead: Compliance as a Competitive Advantage
While the administrative burden of establishing a secondary office may seem daunting, it is an essential component of professional growth in a globalized legal market. By strictly adhering to the deontological rules, lawyers not only protect their professional licenses but also build trust with clients who value transparency and organizational clarity.
As of May 2026, there have been no major changes to the fundamental requirements for secondary offices, but practitioners are advised to monitor the Council of Bars and Law Societies of Europe (CCBE) for ongoing developments in cross-border practice regulations. Ensuring that your professional footprint is documented correctly is the first step toward a successful and ethically sound expansion. We encourage readers to review their current filings and reach out to their local Bar representatives if they have questions regarding their specific practice configuration.
Have you navigated the process of opening a secondary office in Flanders? We invite you to share your experiences or questions regarding these deontological standards in the comments section below.
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