Welcoming a loved one into your home without asking for rent is a common practice in France. Whether it’s to help a friend, accommodate a student child, or host an elderly parent, this situation affects millions of households. However, behind this act of solidarity, there are tax, administrative, and legal obligations that apply, and ignoring them can be costly for both parties.
Loan for use and reclassification as a lease: the legal trap to avoid
When you make a vacant property available to a loved one without rent, civil law refers to it as a loan for use, also known as commodat. This term describes a contract by which you lend an asset for free, with the occupant required to return it.
The distinction from a standard lease seems simple in theory. In practice, it generates disputes. The Court of Cassation, 3rd civil chamber, in a ruling dated July 9, 2026 (n° 25-14.065), reminded that a free occupation does not automatically reclassify as a residential lease. The condition: that the agreement is properly qualified in writing and that the restitution procedure is respected.
An occupant who considers themselves a tenant can claim protections (right to remain in the premises, six-month notice) that a simple guest does not benefit from. The decision of the Nîmes Court of Appeal on November 12, 2025 (RG n° 24/03979) illustrates this: the occupant argued that the loan should last until their death.
The judges refused, confirming that the possibility of terminating the loan for hosting a property for free does not bind for life, unless there is a very explicit clause.
The reflex to adopt: draft a written document, even a brief one, that mentions the free nature of the occupation and its expected duration. In the absence of a fixed duration, judges require a reasonable notice before any request for restitution.
Tax declaration and housing tax: who pays what
Hosting for free does not exempt anyone from their tax obligations. Two situations are clearly distinguished.
The guest lives with you
If your loved one shares your home, you remain liable for the housing tax on secondary residences (the tax on primary residences has been abolished for individuals). The guest must declare their new address to the tax authorities, even if they do not pay any rent.
The guest occupies a vacant property alone
When the hosted person is the only occupant of the property (secondary residence, empty apartment), they become liable for the housing tax. The calculation is made on January 1 based on their income.
For the host, there is an indirect tax advantage. By not receiving any rent, you do not declare any rental income. Therefore, you are not taxed on this property for rental income. However, you cannot deduct any expenses (work, loan interest) related to this property from your rental income.
Impact on CAF benefits and social services
This is often the least understood aspect. You are hosting a friend who receives RSA or APL. This situation alters the calculation of their rights.
- The guest who does not pay rent cannot claim housing assistance (APL, ALS, ALF). These allowances are conditioned on the actual payment of rent or a fee.
- For RSA, CAF takes into account the situation of free hosting in the assessment of resources. The guest must report their actual situation under penalty of overpayment to be refunded.
- If the guest is attached to your tax household (an adult child, for example), their income may affect your family quotient and thus the amount of certain aid subject to resource conditions.
CAF requires a declaration of the hosting situation, usually accompanied by a certificate of free hosting. This document, written on plain paper by the host, specifies the identity of both parties and confirms the absence of rent.
Certificate of hosting and insurance: two often neglected formalities
The certificate of free hosting is not a mere administrative formality. It serves as proof of residence for the guest in many procedures: opening a bank account, registering on electoral rolls, applying for an identity card.
This document must contain several elements to be acceptable:
- The full identity of the host (name, first name, date and place of birth)
- The precise address of the property made available
- The explicit mention that the hosting is free and that the person resides at this address
- A copy of the host’s identity document and a proof of residence in their name
Regarding insurance, the question arises differently depending on the configuration. If the guest lives under your roof, they are generally covered by your home insurance as an occupant. However, check your contract: some insurers require a specific declaration beyond a certain duration.
If the guest occupies a vacant property alone, they must take out their own home insurance. The owner remains obliged to insure the building, but the occupant’s civil liability falls under their own contract.
Ending free hosting: deadlines and procedure
The question of ending the hosting remains the most sensitive. Without a written contract, tensions can quickly crystallize.
For a loan for use without a determined duration, the host can request the restitution of the property at any time, but must respect a reasonable notice period. Jurisprudence does not set a universal duration: this period depends on the personal situation of the guest (age, health status, possibility of relocation).
When a duration has been specified in the contract, the lender cannot reclaim the property before the deadline, except for urgent and unforeseen needs. In case of refusal to leave the premises, a judicial eviction procedure remains necessary, even in the absence of a lease. The host cannot change the locks or cut off utilities on their own initiative.
Formalizing the agreement from the start, specifying an indicative duration, and keeping a signed copy by both parties avoids the vast majority of these blockages. A well-framed free hosting protects both the host and the guest.