Certificat de composition de ménage
Attestation extraite du registre national listant les personnes inscrites à la même adresse. Pour le 12bis §1, 3°, sert à prouver la cohabitation de trois ans avec le conjoint belge.
Applies to: 12bis §1, 3° spouse-of-Belgian declarants demonstrating cohabitation with the Belgian spouse
Last verified: 2026-05-12
Sources
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Brussels Tier-1 quicklink · priority 90
Regions: brussels
Authentication: csam (itsme, eid, mygov.be, smart-id, security-code, eidas)
Kind: deeplink-after-auth · Delivery: sync-pdf-download
Primary actor: both
Handoff: auth-wall
Agent does: I'll send you to the Brussels Irisbox quicklink for the household-composition certificate. Once you sign in, Irisbox generates the PDF and downloads it.
You do: Sign in with itsme or your eID. Save the PDF to your Be Civic folder.
To resume: Tell me 'got it' once the PDF has downloaded.
The steps after authentication / handoff are described from documentation, not yet confirmed by a real Be Civic user. If reality differs, please tell us so we can fix the entry.
Each use generates a real document delivery — only click when you actually need the document.
Try thisNotes: Audited Tier-1; not probed per §24.9 invariant 3. URL from quicklinks-rn.json (type 42 = Composition de ménage).
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Wallonia commune-services page · priority 65
Regions: wallonia
Kind: sitemap-page-fetch · Delivery: informational-routing
Try thisPrimary actor: agent
Agent does: I'll read the Wallonia commune-routing page that covers household composition along with residence and nationality certificates.
You do: None — the agent handles this source fully with no customer action required.
To resume: I'll quote the routing back to you and recommend the federal handoff or the commune visit next.
Notes: Probed 2026-05-12: HTTP 200, page explicitly lists 'composition de ménage' in title and description.
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Federal authenticated portal · priority 60
Regions: federal
Authentication: csam (itsme, eid, mygov.be, smart-id, security-code)
Kind: deeplink-to-auth-wall · Delivery: user-driven-after-auth
Primary actor: user
Handoff: full-takeover
Agent does: I'll point you to my.belgium.be. Sign in with CSAM, open 'Registre national / Rijksregister', and request the household-composition certificate.
You do: Authenticate via CSAM. Download the PDF and save it to your Be Civic folder.
To resume: Tell me when you have the PDF. If the federal portal does not surface household composition, the offline commune route is the fallback.
The steps after authentication / handoff are described from documentation, not yet confirmed by a real Be Civic user. If reality differs, please tell us so we can fix the entry.
Try thisNotes: Probed 2026-05-12: HTTP 200 (assumed), my.belgium.be confirmed as Rijksregister 'Mon dossier' surface.
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Offline commune visitfallback only · priority 10
Regions: brussels, wallonia, flanders, federal
Kind: commune-visit · Desk: Service Population / Bevolkingsdienst · Delivery: in-person-or-postal
Primary actor: user
Handoff: physical-presence
Agent does: I'll prepare what to ask for: a 'certificat de composition de ménage' (FR) / 'attest van gezinssamenstelling' (NL) covering the same period as your residence-history certificate. Bring your eID.
You do: Go to the Service Population of your commune of registered residence. Ask for the composition de ménage covering the relevant period (the three-year cohabitation window for 12bis §1, 3°). Some communes accept postal requests.
To resume: Bring the document and confirm receipt. If the commune issues it dated as of today only (no historical view), ask for the historical version.
The steps after authentication / handoff are described from documentation, not yet confirmed by a real Be Civic user. If reality differs, please tell us so we can fix the entry.
Notes: Always-available fallback.