You are hosting a friend or family member and writing them a certificate of accommodation. This common, often spontaneous gesture carries responsibilities that go far beyond a simple administrative favor. A certificate of accommodation is a declaration made under oath: every detail it contains is legally binding on you, whether you are the host or the person being hosted.
Criminal liability for the host in the event of a false declaration
A certificate of accommodation is not a routine form. It is a declaration made under oath, and the law treats false declarations severely.
In practical terms, if you certify that someone is staying with you when they do not actually live in your home, you are producing a false document. The French Criminal Code provides for a fine of up to 45,000 euros and a prison sentence of up to three years for this type of fraud. These penalties apply both to the host who signs the document and to the person being hosted who knowingly uses it.
The legal consequences of a certificate of accommodation are not limited to criminal penalties. A false certificate can lead to the retroactive cancellation of all procedures carried out using it, including opening a bank account, obtaining an identity document, or registering to vote.
A false certificate makes both parties criminally liable. Anyone who knowingly submits a false document to a government agency faces the same prosecution as the person who drafted it.
Certificate of accommodation and the host’s civil liability
Beyond the risk of criminal penalties, signing a certificate of accommodation has practical effects on your day-to-day life as a host. The first concerns your home insurance.
Home insurance and an additional occupant
Your insurance policy generally covers the people declared as living in your home. Taking in an occupant without notifying your insurer could leave you without coverage. In the event of a claim, such as water damage or a fire, the insurer could dispute coverage if the person staying with you was not declared.
The process is simple: contact your insurer to report the additional occupant. Some policies automatically cover temporary guests, while others require an endorsement.
Liability for damage caused by the person being hosted
The host may be held civilly liable for damage caused by the person they are accommodating. For example, if your guest causes water damage that affects a neighbor’s apartment, you could be held liable as the tenant or owner-occupier.
Why? Because the person being hosted has no lease or direct legal relationship with the landlord or the condominium association. The host remains the landlord’s and insurer’s legal point of contact.
Tax and social security implications for the person being hosted
For the person being hosted, a certificate of accommodation affects several aspects of their administrative affairs. Two areas deserve particular attention: social benefits and taxes.
Reporting a change in circumstances to the Caf
The Caf requires benefit recipients to promptly report any change in their circumstances. Moving in with someone else, even rent-free, changes your household and housing situation. Failing to report rent-free accommodation could result in an overpayment of social benefits, followed by a request for repayment.
Housing benefits (APL, ALS) are not paid to someone staying with another person rent-free, since there is no rent to cover. If you receive these benefits and leave your home to stay with someone else, your payments will stop.
Taxes and the residence tax
Rent-free accommodation does not generate taxable income for the host (since no rent is received). For the person being hosted, residence tax is only an issue in certain specific cases.
Residence tax on primary homes has been abolished for all households. It still applies to second homes. A person staying somewhere rent-free is not liable for residence tax on the home where they are staying. The primary occupant (the host) remains legally liable for the tax.
Ending the arrangement: the certificate does not grant a right to remain
Have you signed a certificate and now want to end the accommodation arrangement? One legal point is worth clarifying.
A certificate of accommodation is not a lease. It does not give the person being hosted the right to remain in the home. Unlike a tenant protected by law, someone staying rent-free does not have the same notice or eviction protections.
In practice, the host can ask the person to leave. A reasonable notice period is expected, but there is no fixed statutory timeframe. In this situation, the legal framework offers more protection to the host than to the person being hosted.
However, the circumstances still matter. If the person being hosted is vulnerable (a minor or a dependent older adult, for example), the courts may assess the situation differently and allow more time before they have to leave.
Practical precautions before signing a certificate of accommodation
To reduce the risks for both parties, take a few practical steps before drafting or using this document:
- Make sure the person is genuinely and actually staying with you before signing. Signing a certificate as a favor when the accommodation is not real could expose you to criminal prosecution for making a false declaration.
- Notify your insurer that an additional occupant is staying in your home, even if the arrangement is temporary and only lasts a few months.
- Report the change in circumstances to the Caf and any relevant organizations, whether you are the host or the person being hosted, to avoid retroactive recalculations of benefits.
- Keep a dated copy of the certificate and any supporting documents submitted in case of a later administrative check.
A certificate of accommodation remains a valuable administrative document for people who do not have proof of address in their own name. Drafting it carefully and ensuring every detail reflects the truth protects both the host and the person being hosted. Legal risks arise only when the document does not reflect reality.
