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.
Frequently asked questions
Is it only for couples?
No. Subject to the applicable conditions, two people living together can declare legal cohabitation without being a couple.
Sources and useful texts
Sources consulted on 27 September 2026
General information about Belgian law. Region, date of events and your circumstances can change the applicable rule.
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