Setting Up Your Belgian Office as an International Company: The Workspace Decisions That Matter

The first question is not "where to rent"

When international companies ask us to help them open a Belgian office, the instinct is usually to jump straight to real estate. That is the wrong place to start. The workspace decision is downstream of four other decisions, and getting them in the right order saves six months and a lot of money.

Step 1: Define what "Belgian presence" actually means

There are at least four different things companies mean by "opening a Belgian office":

• A registered office for an entity, with no operational staff yet. Mostly a legal and accounting exercise.
• A sales or representative office, with one to five people covering Benelux or a broader region.
• A full operational subsidiary, with local hiring, local management, and services delivered from Belgium.
• A European HQ, often for US or Asian companies, anchored in Brussels for institutional access or in Antwerp for logistics.

Each of these maps to a different workspace product, a different city, and a different budget.

Step 2: Pick the right city

Brussels The default choice for most international companies, and usually the right one. Brussels is the federal capital, the EU centre, trilingual, and has the deepest pool of international-ready workspace and talent. Pick Brussels if your business needs EU access, institutional proximity, or multilingual client-facing work.

Antwerp The right choice if your Belgian activity is Flemish-speaking, logistics-connected, or consumer-oriented. Antwerp's economy is concentrated in port logistics, fashion and retail, and a growing tech scene. Companies whose buyers are Flemish-speaking SMEs often belong here rather than Brussels.

Ghent The right choice if your priority is technical hiring (engineering, biotech, software) or if you are plugging into a specific research cluster. Ghent's university ecosystem is strong, talent is well-priced, and the workspace market is small but high-quality.

Most international companies start in Brussels and add a second location in Antwerp or Ghent once they hit 20 to 30 people locally.

Step 3: Understand the language layer

Belgium has three official languages. In workspace terms:

• Brussels: officially bilingual French-Dutch. In practice, business operates substantially in English at the international level, French at the local level, Dutch where relevant.
• Antwerp and Ghent: Dutch-first. English works in business contexts, but your local hires and operational life happen in Dutch.
• Wallonia (Liège, Namur, Charleroi): French-first. English coverage is thinner in workspace operations.

Pick workspace operators whose reception, community, and documentation match the language your team and clients actually use. This is not a minor issue. A French-only reception in a Dutch-heavy business or an English-weak operator for a multinational team creates daily friction.

Step 4: Match workspace to stage

Stage 1: registration only A virtual office with registered office services. €60 to €150 per month. Gives you a Belgian address for incorporation, the Crossroads Bank for Enterprises filing, and your first invoices. Works until you have local staff.

Stage 2: first 1 to 5 hires A serviced office in a good-quality building, typically 1 to 3 private rooms or a small team suite. Lets you interview candidates, meet clients, and operate without a lease commitment while the business proves out.

Stage 3: scaling to 5 to 30 people A larger serviced office or a short-term flex lease (typically 12 to 24 months). €1.750 to €16.500 per month depending on city and district. Still cheaper and faster than a traditional lease, and avoids the six-month fit-out delay that comes with Category A space.

Stage 4: 30+ people, stable business Now a traditional lease makes sense if your headcount is predictable. Budget 9 to 18 months for the full process (search, negotiation, fit-out), and factor in specialist advisors. A managed suite is also a great option here: have your own office space but outsource the actual running of the office to a coworking operator.

Step 5: Avoid the three classic mistakes

Renting too much space too early. International companies routinely overestimate how fast they will hire in Belgium. The safer bet is a smaller serviced office with the ability to expand within the same building or network, not a fit-out for 40 people when you currently have 8.

Choosing the cheapest option without factoring in credibility. In Brussels, where you are based is read as a signal. A cheap address on the periphery will cost you meetings you do not know you are losing.

Ignoring the operational layer. Reception language, IT, security, meeting room quality, parking, and access hours all matter more at 10 people than the monthly rent. Cheaper spaces often lose on these dimensions.

FlexGuide's relocation advisory service supports international companies through this full arc, in English, French, or Dutch. We handle the shortlisting, the site visits, the negotiation, and the onboarding, at no cost to you. Our fee is paid by the operator on a successful match.

Start with a 15-minute briefing call, or explore our Brussels inventory to see what is currently available for international teams. For a deeper view on costs in the capital, read what office space really costs in Brussels in 2026. Exploring other cities? See our Antwerp market guide and our Ghent market guide.