# Legal cohabitation: preparing the declaration and its effects

Canonical: https://ailawyer.be/en/droit-simplement/cohabitation-legale-demarches/
Language: en
Publisher: Mashaah LLC / AILawyer.be
Published: 2026-09-27T11:00:00+02:00
Updated: 2026-09-27T11:00:00+02:00

Living together and being legal cohabitants are different situations. Review housing, shared spending and expectations before making a declaration.

Sources consulted: 2026-09-27

## Understand the rule

Legal cohabitation requires a declaration to the municipality of the shared home. It creates certain protections and duties but does not have all the effects of marriage. Family and property issues need separate assessment.



## Prepare your next steps


- Ask the municipality about conditions, documents and appointments. Sharing a registered address does not replace the declaration.
- List individual assets, debts and shared expenses. Preserve evidence of significant contributions to the home.
- Discuss additional protection with a notary, including suitable agreements and arrangements.


## Practical example

Fictional example: two people move into a home owned by one of them. Before paying jointly for renovations, they document contributions and seek advice about their effects.



## What to check

Protection on separation or death is not determined solely by registration. Parentage, pensions and tax have separate rules.



### Is it only for couples?

No. Subject to the applicable conditions, two people living together can declare legal cohabitation without being a couple.

## Sources

- [Belgium.be — Cohabitation légale](https://www.belgium.be/fr/famille/couple/cohabitation/cohabitation_legale)
- [SPF Affaires étrangères — Cohabitation](https://diplomatie.belgium.be/fr/pour-les-belges-letranger/etat-civil/cohabitationpartenariat-enregistre)

General information, not personalised legal advice. Verify jurisdiction, applicable date and the primary source before acting.