Mussenstraat 17

1000 Brussel • 34 registered now

exact location from the address register On OpenStreetMap

This address at a glance

Building with many business tenants

34 companies are registered here now, more than at 99% of Belgian addresses, on a plot with 2 buildings of about 3,500 m² of floor space in all: about 102 m² per company, room enough for an office each. Most are not tied to one another: independent tenants of one building. Tied by: 3 named Plus, 3 named Socialistische, 7 with a shared director.

More companies than at 99% of Belgian addresses (which have at most ten).
32 have their registered office here, 2 only an establishment or branch. A registered office is the legal address; where work happens is registered as an establishment.
Most common main activity: Public administration and defence; compulsory social security (84309), at 8 of the 26 current companies with a known activity (11 different). Then Activities of head offices (70100): 3, Nursing and midwifery (86940): 3.
7 of the 34 companies share a current director with another company here; the largest group has 5.
Half of the current companies have been registered here for less than 30 years.

What you can do with this

Open the dossier of the company you are interested in: the list shows whether it has its registered office here or only an establishment.
Look at how the former companies ended: that says something about the address, nothing about any individual company.
Filter the list below by outcome, or export all of it as CSV.

34 registered now

34 ever registered

0 bankrupt or reorganisation

0 dissolved or inactive

0 new in 12 months

The building

cadastre and 3D survey

Footprint: 783 m²; measured, the ground under the 2 buildings
Floor area (estimate): ~3,500 m²; 5 storeys, estimated from the building volume

Per current company: ~102 m²
Height: 22.8 metres
Volume: 10,435 m³
Plot: 1,335 m²

Protected heritage

ProtectedMonumentToren van de eerste stadsomwalling van Brussel

Buildings from the cadastre and the 3D survey (LiDAR), box numbers from the BEST address register, heritage from the regional registers. Who is registered here, not who owns it.

Registrations per year, and what became of them

2018

2020

2022

2024

2026

still here moved bankrupt reorganisation dissolved or inactive

Companies at this address

34 in total

Company	At this address	Outcome
Action et Solidarité socialiste du Brabant - Socialistische Aktie en Solidariteit van Brabant BE 0446.434.382	Registered office since 02-1992	Active here
Centre hospitalier César De Paepe - @Verplegingscentrum Cesar De Paepe@ BE 0409.231.716	Registered office since 02-1946	Active here
Centres médicaux César De Paepe -Medische Centra Cesar De Paepe BE 0446.977.681	Registered office since 02-1992	Active here
Derde Leeftijd en Solidariteit, Sociaal Centrum BE 0447.778.031	Registered office since 07-1992	Active here
Domein Westhoek BE 0449.976.961	Registered office since 07-2006	Active here
Fèdèration de Centres de service social mutualistes Bruxellois - Verbond van centra voor maatschappelijk werk van de ziekenfondsen uit het Brusselse BE 0472.817.392	Registered office since 10-1997	Active here
Fédération socialiste des Pensionnés de Bruxelles BE 0447.579.081	Registered office since 04-1992	Active here
Groep thuishulp thuiszorg Brabant BE 0674.527.508	Registered office since 01-2017	Active here
Handicapés et Solidarité, Centre de Service social BE 0447.758.037	Registered office since 07-1992	Active here
Jongeren en Solidariteit, Sociaal Centrum BE 0447.780.110	Registered office since 12-2006	Active here
LATITUDE JEUNES, RÉGIONALE DU BRABANT BE 0447.758.631	Registered office since 01-2003	Active here
LOISIRS ET SANTE BE 0467.750.232	Registered office since 12-1999	Active here
Oeuvres et Solidarités socialistes - Socialistische Solidariteits Werken BE 0407.763.056	Registered office since 05-1966	Active here
S'PLUS Brabant BE 0869.563.626	Registered office since 10-2004	Active here
S-PLUS BE 0409.572.206	Establishment since 12-1961 shares director	Active here
S-PLUS BRUSSEL VZW BE 0460.056.350	Registered office since 01-1997	Active here
S-Sport BE 0451.743.450	Establishment since 01-2008 shares director	Active here
Senioren Academie BE 0446.110.819	Registered office since 12-2006	Active here
Seniors Academie BE 0445.177.639	Registered office since 01-2008	Active here
SOCIALISTISCHE EENDRACHT EN SOLIDARITEIT VAN BRABANT / UNION ET SOLIDARITE SOCIALISTE DU BRABANT BE 0434.348.776	Registered office since 10-1987	Active here
Socialistische Eendracht en Solidariteit van het Arrondissement Halle-Vilvoorde BE 0434.348.083	Registered office since 10-1987	Active here
Socialistische Eendracht en Solidariteit van het Arrondissement Leuven BE 0434.348.182	Registered office since 10-1987	Active here
Soins á Domicile BE 0443.365.125	Registered office since 01-2008 shares director	Active here
SOLIDARITEL BE 0475.300.295	Registered office since 08-2001	Active here
Thuisopvang Brabant BE 0445.185.260	Registered office since 05-1991	Active here
Thuiszorg Brabant BE 0437.614.708	Registered office since 12-1988 shares director	Active here
Thuiszorg Brussel - Soins Domicile Bruxelles BE 0443.361.264	Registered office since 01-2008 shares director	Active here
Troisiéme Age et Solidarité, Centre de Service social BE 0447.758.829	Registered office since 07-1992	Active here
Union et Solidarité socialiste de l'Agglomération bruxelloise - Socialistische Eendracht en Solidariteit van de Brusselse Agglomeratie BE 0434.348.677	Registered office since 10-1987	Active here
Unité TVA COORDINATION DE LA SOLIDARITE SOCIALISTE DU BRABANT BE 0808.883.295	Registered office since 01-2009	Active here
Vacances heureuses - Heerlijk Verlof BE 0410.848.745	Registered office since 09-1949	Active here
Vinc BE 0447.779.912	Registered office since 06-1995 shares director	Active here
VRIJE TIJD EN GEZONDHEID BE 0863.894.668	Registered office since 02-2002	Active here
Zorgcoördinatie Brabant BE 0891.662.008	Registered office since 08-2007 shares director	Active here

Export as CSV Network from this address

What this check does and does not say

A shared address is not suspicious in itself: office buildings, accountants and business centres host many companies. The verdict says what kind of address this is, nothing about any individual company.

The comparison rests on all 1,408,687 active Belgian addresses: half have one company, 95% at most five, 99% at most ten, 99.9% at most 35. There is no national reference for bankruptcies and arrivals; they are shown here as counts.

A shared director is 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: 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 State Gazette (judgments), BOSA BEST (addresses and box numbers), cadastre and 3D survey (parcels and buildings).

Source: KBO (Kruispuntbank van Ondernemingen) · Belgian State Gazette · BOSA BEST · Cadastre/LiDAR. Last updated: 04-10-2026.