Declaration of community of life: free template

Updated March 2026 - The search "free community living declaration" hides several administrative needs: proving cohabitation, justifying a common address or completing a residence, CAF or mutual insurance file. The essential point is simple: there is not always a single imposed Cerfa. In many cases, a certificate on honor is sufficient, provided it is dated, signed and supported by the correct supporting documents.

It is used to declare that two people live together in a stable manner. It can be requested for:

• ▸a residence permit or family reunification file;
• ▸certain social initiatives;
• ▸insurance, banking or housing formalities;
• ▸inheritance or patrimonial procedures.

If you have any doubts about the fiscal or social impact of a family approach, also consult our article Tax or social question, our guide on tax advisor for individuals and our legal advice page.

Some town halls no longer issue a cohabitation certificate. In this case, a certificate on honor drawn up and signed by both people is generally used.

Additional documents requested are often:

• ▸an identity document;
• ▸proof of address;
• ▸proof of living together: lease, invoice, insurance, statement or mail to the same address.

Name, first name, date and place of birth of the first person
Name, first name, date and place of birth of the second person
Full common address

We, the undersigned, certify on our honor that we have been living in community at the above address since [date], in a stable and continuous manner.

This certificate is established to serve and assert what is right.

Done at [city], on [date]
Signatures of both declarants

Mentions not to forget

• ▸the complete identity of the two people;
• ▸the exact address of the common home;
• ▸the start date of living together if known;
• ▸the "certify on honor" formula;
• ▸the date and the two signatures.

Hayot Expertise Advice: the value of the certificate depends as much on its text as on the consistency of the attachments.

The good reflex is to attach recent and matching documents:

• ▸lease or accommodation certificate;
• ▸energy or internet bill;
• ▸home insurance certificate;
• ▸banking or administrative document at the same address.

If your approach also concerns household taxation or assets, you can complete your reading with our analysis on real estate taxation.

• ▸use an undated model;
• ▸forget a signature;
• ▸attach documents with another address;
• ▸believe that a town hall must issue an official certificate.

When the file involves an important patrimonial, tax or administrative issue, it is necessary to think beyond the simple free model. The right question is: what level of proof does the administration expect in my specific case?

👉 Request a file review from our team

A free community living declaration may be sufficient, provided it is well written, signed and supported by consistent supporting documents. The real pitfall is not the absence of specific Cerfa; This is the incomplete file.

📞 Do you want to secure a certificate intended for an administration or an organization? Our firm helps you make the substance of the file and the documents to be produced more reliable. Make an appointment with an expert

(Official sources: Public Service on the certificate of living together or cohabitation, Public Service form for declaration on honor, Public Service on proof of address)