Troonstraat 4
Activity behind the registrations
2 of the 10 active companies here show no staff, no fixed assets and no other address.
Main activities
8 different activities across 10 of the 10 companies registered now.
- Market research and public opinion polling (73200) 2
- Activities of membership organisations (94920) 2
- Other financial services (64999) 1
- Property management for co-owned buildings (syndics) (68321) 1
- Public relations and communication consultancy (73300) 1
- Activities of business and employers' organisations (94110) 1
- Activities of membership organisations (94994) 1
- Other membership organisations (94999) 1
Companies at this address
10 in total| Company | At this address | Outcome |
|---|---|---|
| Association des copropriétaires de l'immeuble à Bruxelles , rue du Trone 4
BE 0550.522.114 Founded in 1962 |
Registered office · VME
since 01-2008 |
Active here |
| COMMUNAUTE EUROPEENE DES COOPERATIVES DE CONSOMMATEURS
BE 0889.195.436 Founded in 2007 |
Establishment
since 09-2006 |
Active here |
| Confédération des Associations nationales de Tanneurs et de Mégissiers de la Communauté européenne(Cotance
BE 0445.496.848 Founded in 1991 |
Establishment
since 01-2008 |
Active here |
| EDFI Management Company
BE 0652.957.874 Founded in 2016 · 47 FTE (2025) |
Registered office
since 04-2016 |
Active here |
| European Conservatives and Reformists Party
BE 0820.208.739 Founded in 2009 · 8.1 FTE (2025) · negative equity |
Registered office
since 08-2010 shared director |
Active here |
| EUROPEAN DEVELOPMENT FINANCE INSTITUTIONS
BE 0862.014.254 Founded in 2003 · 8.4 FTE (2025) |
Registered office
since 12-2003 unit elsewhere |
Active here |
| Exeltis Belgium
BE 0628.846.248 Founded in 2015 · 8.7 FTE (2025) |
Registered office
since 04-2017 |
Active here |
| ISC intelligence in science
BE 0887.103.107 Founded in 2007 · total assets €150,468 (2025) |
Establishment
since 01-2007 |
Active here |
| Joint Programming Initiative on Healthy and Productive Seas and Oceans
BE 0691.970.779 Founded in 2018 · total assets €727,467 (2025) |
Registered office
since 05-2018 |
Active here |
| New Direction - the Foundation for European Conservatism
BE 0820.210.719 Founded in 2009 |
Registered office
since 01-2011 shared director |
Active here |
The building
cadastre and 3D survey- Footprint
- 896 m²
- measured, the ground under the building
- Floor area (estimate)
- ~4,800 m²
- 7 storeys, estimated from the building volume
- Per current company
- ~482 m²
- Height
- 27.6 metres
- Volume
- 14,455 m³
- Plot
- 670 m²
An association of co-owners (VME) is registered. The building is therefore divided into apartments or units that each have an owner.
The buildings come from the cadastre and the 3D survey (LiDAR), the box numbers from the BEST address register and the heritage from the regional registers. A registration says who is based here, not who owns it.
Registrations and outcomes per year
Building with many business tenants
10 companies are registered here now. They are based in a building of about 4,800 m² of floor space. That is about 482 m² per company, room enough for an office each. Most are not tied to one another and rent independently in the same building. They are tied as follows: 2 with a shared director.
- This address has more companies than 95% of Belgian addresses, which have at most five.
- 7 have their registered office here, 3 only an establishment or branch.
- 2 of the 10 companies share a current director with another company here. The largest group has 2.
- Half of the current companies have been registered here for less than 18 years.
Recommendations
- Open the dossier of the company you are interested in. The list shows whether it has its registered office here or only an establishment.
Method and limits of this check
A shared address is not suspicious in itself. Office buildings, accountants and business centres host many companies. The verdict is about the kind of address, not about any individual company.
The comparison rests on all 1,408,687 active Belgian addresses. Half of them have one company, 95% at most five, 99% at most ten and 99.9% at most 35.
The list of an address holds the companies in the KBO register and those that left it since April 2026. A company that stopped before then is not in it. So the bankruptcies at this address are shown as counts. The comparison with Belgium runs over the postcode, for the same founding years and after the same number of years. It comes from the survival tables, which start from the founding deeds in the Belgian Official Gazette and count the companies that stopped too.
A shared director holds a current board mandate at two companies at this address. Statutory auditors and liquidators do not count.
Floor area and storeys are not measured anywhere. So the building shows them as estimates, next to the measured footprint. No register of building use (office, housing) is available.
Sources: KBO (companies, addresses, activities and legal situation), Belgian Official Gazette (judgments), BOSA BEST (addresses and box numbers), cadastre and 3D survey (parcels and buildings).
Source: KBO (Kruispuntbank van Ondernemingen) · Belgian Official Gazette · BOSA BEST · Cadastre/LiDAR. Last updated: 13-11-2026.