Several real estate agencies in France have similar names: Sirius, Sires, 3S Immobilier, Sirs. This phonetic proximity creates a real risk of confusion when an individual is trying to submit a sales file, a management mandate, or identification documents. Even before discussing the contact channels of Sires Immobilier, the preliminary question is about verifying the exact identity of the agency you wish to reach.
Verify the identity of Sires Immobilier before submitting a file
The French real estate market includes entities with nearly identical names. The Sirius Group operates in commercial real estate in Île-de-France. The SIRES, mentioned by the Banque des Territoires, refers to a system related to local authorities. 3S Immobilier is based in Côte d’Ivoire. Sirius Immobilier offers inter-agency services across the territory. None of these entities corresponds to Sires Immobilier.
Sending a complete file (identification document, tax notice, bank statements) to the wrong entity exposes you to the risk of personal data leakage. Caution requires cross-referencing several elements before any transmission.
- Verify the agency’s SIREN or SIRET number on an online business directory by typing exactly “Sires Immobilier” and not a similar name
- Check that the trade name, registered office address, and professional card number (carte T or carte G) match the entity you are communicating with
- Compare the domain name of the website: the URL sires-immobilier.fr should not be confused with sirius-immo.com, sirius-immobilier.fr, or 3simmobilier.com
- In case of a first phone contact, ask for confirmation of the SIRET number and the physical address of the agency before sending any documents
This verification reflex takes only a few minutes. It protects both the seller and the buyer in a transaction where significant amounts and sensitive data are involved.

Contact channels of the Sires Immobilier agency
Once the agency’s identity is confirmed, contact can be made through the dedicated online form. You can contact the Sires Immobilier team directly from their contact page, which centralizes the necessary information to submit a request.
The online form provides a concrete advantage for real estate projects: it allows you to specify the nature of the request (purchase, sale, appraisal, rental management) right from the first message. The agency can thus direct the request to the appropriate contact without unnecessary prior exchanges.
Which channel to choose based on your real estate project
For a property appraisal, the online form is sufficient in most cases. Describe the type of property, its location, and its approximate size. These elements allow the agency to prepare an initial response even before a physical meeting.
For a purchase project with a tight timeline, a phone call remains the fastest way to get a response about the availability of a property or the possibility of organizing a visit. The phone contact details are listed on the agency’s contact page.
For a rental management question or a sales mandate, visiting the physical agency may be preferable. Signing a mandate involves verifying original documents and having an in-depth discussion about the contractual conditions.
Information to prepare before contacting a real estate agency
Regardless of the channel used, the quality of the first contact often determines the speed of processing your file. Arriving with the right documents or information speeds up each step.
For a sales project
The property title, the latest property tax notice, and the mandatory technical diagnostics (DPE, asbestos, lead depending on the age of the building) constitute the minimum basis. If recent work has been done, the corresponding invoices allow the agent to value the property more accurately.
For a purchase project
A financing certificate or a bank principle agreement lends credibility to your approach with the agency. Without this document, a real estate advisor may find it difficult to prioritize your file over a buyer whose budget is already validated. Also specify the desired geographical area and non-negotiable criteria (minimum size, number of bedrooms, presence of an outdoor space).

Professional card and legal obligations of a real estate agency in France
Any agency engaging in real estate transactions or management in France must hold a professional card issued by the CCI. This renewable card certifies that the holder meets the professional eligibility requirements, has financial guarantees, and holds professional liability insurance.
Before entrusting a mandate, you can request to see this card. The agency is required to display it in its premises and to mention its number on its commercial documents. This number allows you to verify the validity of the authorization with the competent chamber of commerce.
The financial guarantee protects the funds deposited by clients. It covers the amounts paid as part of a transaction (escrow, security deposit). An agency that does not present this guarantee cannot legally collect funds on behalf of third parties.
The obligation to display fees, either as a percentage or a fixed amount, applies both in the window and on the agency’s website. Make sure the fee schedules are accessible before committing, to avoid any surprises at the time of signing the agreement.
Protecting your personal data during initial contact
Submitting a real estate file involves sharing sensitive information: civil status, income, asset situation. Some precautions are necessary during the first exchange.
Prefer sending documents via the agency’s secure messaging system rather than through unencrypted email. If the agency does not offer a secure solution, you can use a password-protected file transfer service.
Never send your complete file during the first contact. During an inquiry, a summary of your project is sufficient. Supporting documents only become necessary when formalizing a mandate or a purchase offer.
If in doubt about the authenticity of a contact claiming to be a member of Sires Immobilier, hang up and call the official number listed on the site sires-immobilier.fr. This simple reflex helps avoid identity theft attempts, which also affect the real estate sector.
The choice of a real estate agency relies as much on the quality of the initial exchange as on the prior verification of its legal identity. Cross-check the SIRET, the professional card, and the domain name before any document transmission remains the best protection for an individual engaging in a purchase or sale project.



