In French law, every individual has a domicile in the sense of Article 102 of the Civil Code: the place of their main establishment. Using a third party’s address to receive mail or carry out administrative procedures does not violate any rules, provided that a specific framework is respected. This question arises for both a temporarily housed individual and a self-employed entrepreneur starting their activity.
Accommodation Certificate and Control by Social Organizations
The foundation of any domiciliation with a third party is based on a document: the accommodation certificate. Written by the person providing their address, it specifies the identity of the host, that of the guest, the address in question, and the start date of the provision.
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This document is not merely a courtesy. The National Health Insurance Fund (CNAM) issued a network note on July 4, 2023, requesting the CPAM to more systematically verify the consistency between the declared address and the actual situation of the insured. In practice, some funds now require the accommodation certificate accompanied by proof of residence from the host to accept a change of address, with possible suspension of rights in case of doubt.
The possibility of having a postal address at someone’s place thus implies formalizing the situation in writing, even among close friends. A verbal agreement is no longer sufficient in light of the increasing demands from organizations.
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Election of Domicile: What the Social Action Code Says
The election of domicile refers to the procedure by which a person without a stable domicile obtains a recognized administrative address. Articles L.264-1 and following of the Social Action and Families Code govern this system.
The inter-ministerial circular of January 25, 2024 (DGCS/SD1 n°2024-15) clarified a previously vague point: CCAS must accept requests for domiciliation even when a person occasionally sleeps at a relative’s place, provided they cannot elect domicile administratively there. This clarification changes the game for individuals in precarious housing situations.
In practical terms, domiciliation with a CCAS or an approved organization opens access to several rights:
- Registration on the electoral rolls of the municipality of the CCAS
- Access to health insurance and social benefits
- Receipt of all administrative mail (taxes, CAF, Pôle emploi) at the organization’s address
- Renewal of identity documents using this address as proof
This route remains distinct from domiciliation with a friend or family member. The CCAS intervenes when no private address can be used stably.
Business Domiciliation with an Individual: The Limits of Lease and Co-ownership
A self-employed entrepreneur or the manager of a company can set the registered office at a third party’s address. The Commercial Code allows this, but two contractual locks may block the process.
The first concerns the rental lease. If the host is a tenant, their lease agreement may explicitly prohibit the domiciliation of a professional activity. Ignoring this exposes one to the risk of lease termination by the landlord.
The second lock is the co-ownership regulations. In a co-owned building, these regulations may prohibit any commercial or professional activity. The property manager may require the cessation of domiciliation if it violates the existing clauses.
The duration of this professional domiciliation with a third party remains regulated. For newly created businesses, domiciliation at a third party’s home is generally time-limited unless no contractual or regulatory clause opposes it.
Difference Between Postal Address and Tax Domicile
Receiving mail at an address does not make that address your tax domicile. The distinction is fundamental and a frequent source of confusion.
The tax domicile corresponds to the place where a person usually resides, where their economic interests are centered, or where they carry out their main activity. Tax authorities rely on a set of indicators (actual place of residence, energy consumption, physical presence) to determine this domicile.
Using a relative’s address to receive mail does not change your tax domicile. Declaring to the tax authorities an address where you do not actually reside may constitute a false declaration. The risk is real: tax reassessment, loss of geography-related benefits (free zone, local exemption), or attachment to an incorrect tax household.
For a temporarily housed individual, the situation is simpler. If you are actually living with the person hosting you, this address can become your tax domicile provided your presence there is real and durable.
Documents Required for Domiciliation with a Third Party
Administrative organizations (CAF, CPAM, tax services, banks) require a coherent set of documents. The list varies by organization, but a common core emerges:
- A signed and dated accommodation certificate from the host
- A copy of the host’s identity document
- Proof of residence in the host’s name (utility bill, tax notice, rent receipt)
- A copy of the identity document of the housed person
Each organization may require additional documents. Some banks, for example, request a sworn statement in addition to the standard accommodation certificate. Anticipating these requests avoids administrative back-and-forth.
Domiciliation with a third party remains a legal and accessible solution, whether for a transitioning individual or for an entrepreneur starting out. The main point of vigilance lies in the consistency between the declared address and the actual situation: controls are tightening, and a well-structured file from the outset avoids future blockages.