What is the domiciliation of a SASU?
Domiciliation involves defining the address of your company's registered office. This is a legal obligation for all companies, including SASU.
It assigns an administrative and legal address to your company, which determines :
- nationality and applicable regulations ;
- the competent court in the event of a dispute ;
- taxation, which can vary depending on the company's geographical location.
This is also the destination address for company mail and all legal documents (invoices, quotes, contracts, declarations, etc.).
What are the different options for domiciling an SASU?
There are several options for domiciling a SASU:
Domiciliation at the manager's personal address
It is possible to domicile the SASU at your personal address, but only if you are the legal representative. This option must be chosen when the company is created, and may not exceed 5 years.
The chosen address can be purely administrative, or can also be used as a workplace.
Only the legal representative of the SASU is authorized to domicile the company at his or her personal address, which means that the company cannot be domiciled at the address of the sole shareholder.
Before choosing this option, check that you meet the following conditions:
- you own or rent the property;
- the property is your principal residence;
- your residential lease or condominium by-laws do not prohibit the domiciliation of a company.
Next, you must inform your landlord (if you are a tenant) or your condominium corporation that your personal home will be used as the address for your company.
This notification must be made in writing, more precisely by registered letter with acknowledgement of receipt (LRAR).
Once you've registered your company, you'll need to mention your business address on your business documents, such as electricity and telephone bills.
Domiciliation in commercial premises
You can rent commercial premises to run your business. This option enables you to protect your personal home from your professional activity. To occupy commercial premises, you need to sign a commercial or professional lease.
However, this option is more expensive than domiciling in your own home, and also involves more complex management.

Domiciliation in a coworking space
A coworking space enables several companies to share a business premises. This option allows you to choose the coworking address as your company's headquarters , where you can conduct your business.
This choice is valid for all types of business, whether commercial, craft or self-employed.
Domiciliation in a coworking space offers several advantages:
- exchange ideas with other professionals ;
- share equipment (printers, coffee machines, etc.) with other companies;
- allocate costs.
Domiciliation in a business incubator
A business incubator provides accommodation and support for young entrepreneurs during the first few years of their activity.
This structure offers several advantages:
- a domiciliation service, with shared premises;
- shared-cost services with other contractors ;
- personalized support ;
- a professional network at your fingertips.
Domiciliation with a domiciliation company
Domiciliation with a specialized company can be a sustainable and cost-effective solution.
Domiciliation companies offer companies a domiciliary address, as well as additional services to manage their administrative tasks (mail management, switchboard, meeting room rental, etc.).
This option offers a number of advantages, which we'll detail below.
Why is it important to choose the right registered office for your SASU?
The location chosen for your SASU has a direct influence on its image and credibility. A prestigious address can enhance your professional image, while an inappropriate choice could raise doubts and mistrust among your potential partners or customers. It is therefore essential to choose a location that matches your company's activity.
To make the best choice, several criteria must be taken into account:
- the nature of your business ;
- the clientele you wish to attract;
- the products or services you offer;
- address accessibility;
- proximity to your suppliers or customers;
- services (mail forwarding, office and meeting room rental, switchboard, etc.).
A well-chosen head office can contribute to the success and longevity of your business. It can not only reinforce your credibility, but also offer you practical services tailored to your needs.
What are the advantages of domiciliation with a specialist company?
Domiciliation companies offer "tailor-made" formulas to meet the specific needs of each company. They offer many advantages, such as
- the separation of personal and professional life ;
- access to a prestigious address;
- personalized support and complementary services.
Separation of personal and professional life
Separating your home address from your business address allows you to :
- protect your privacy;
- avoid regulatory problems.
Protecting your privacy
When the address of your company's head office is the same as your home address, it's hard to keep your private and professional lives separate.
What's more, anyone can access your address simply by searching for your name on the Internet. It then becomes public , accessible not only to your customers and suppliers, but also to other people. Just imagine a disgruntled customer coming straight to your home.
Choosing to have your business address registered with a specialized company means you can keep your personal address confidential, separate from that of your company.
Avoid regulatory problems
As a tenant, you live in a building you don't own, which means you have to respect the terms of your lease.
So, if you're considering domiciling your business at home, it's crucial to check your lease (if you're a tenant) or co-ownership regulations carefully. These documents may contain clauses prohibiting the domiciliation of a company at your personal address.
Choosing a commercial address means you won't be subject to the constraints imposed by a landlord or co-ownership.
Access to a prestigious address
Your business address plays an essential role in reflecting your company's image to your customers and partners.
One of the main advantages of domiciliation with a specialized company is the possibility of obtaining a prestigious address at a competitive rate. For just a few dozen euros a month, a company can set up its headquarters at a prestigious address. In many major French cities (Paris, Lyon, Marseille, etc.), domiciliation enables you to locate your company in strategic business districts, offering unique visibility.
Using a domiciliation company such as SeDomicilier is the ideal solution: simply choose a prestigious address from those on offer and sign your domiciliation contract directly online.
Personalized support and additional services
Domiciliation companies do more than just provide a head office address. They also offer personalized support and a range of additional services to make day-to-day business easier. Depending on the package you choose, you can benefit from a wide range of services tailored to your needs.
Services include :
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Mail management: reception, digitization and forwarding of mail;
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fully-equipped office rental: workspaces adapted to companies' needs;
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meeting room rentals: professional spaces for your meetings with customers or partners;
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a switchboard;
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legal support: specialized advice to meet your legal needs;
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help in drawing up quotations and invoices;
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a high-speed Internet connection and the provision of computer equipment for working in good conditions.
These services enable entrepreneurs to delegate certain administrative tasks, while benefiting from a professional working environment. By choosing a domiciliation company, you can concentrate fully on developing your business, with the assurance that your administrative needs are taken care of.
To register your SASU, follow these steps:
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choose a location according to your needs;
- Indicate the reason for domiciliation (company start-up or transfer of registered office) ;
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mention the registered office address in the SASU bylaws and legal documents;
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register your SASU.
In the event of a change of address, the Articles of Association of your SASU will need to be amended to reflect the new registered address.
Once your company has been registered, you need to draw up a certificate of registration. This document proves that you have a registered address for your company. It should be kept in a safe place, as it may be required for the registration of your SASU or for other administrative procedures.
As the domiciliation of a SASU is an obligatory step, you must provide documents attesting to this domiciliation. Here are a few elements that can be used to justify the domiciliation of your SASU:
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certificate of domiciliation: this document is often issued by the domiciliation company (if you use a specialized company) and certifies the address at which the company is domiciled;
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commercial lease or rental contract: if the company is domiciled in commercial premises;
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domiciliation contract (in the case of commercial domiciliation): a contract signed with a domiciliation company can be used to justify your company's address;
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bill (electricity, telephone, etc.): a recent bill showing the address of the company's head office (electricity, gas, internet, telephone) can be accepted as proof of domicile.
Lastly, if your SASU is domiciled at your home address, proof can be provided by the lessor or co-ownership association.
To avoid administrative problems, it is essential to provide proof of domicile.
For change the registered office of a SASUcertain formalities must be completed:
- amend the bylaws;
- publish an advert in a legal gazette;
- declare the transfer of the registered office.
Modification of the articles of association
In the event of a change of registered office, the SASU articles of association need to be updated. The address of the registered office is mandatory information in the articles of association, whatever the legal form of the company (SARL, SAS, SASU, etc.).
Consequently, it is necessary to amend the clause in the bylaws mentioning the address of the registered office to include the new address.
If the head office is transferred to another département, a list of the former head offices must also be attached to the company's articles of association.
This document lists all the company's previous registered offices, the registries where it was registered, and the date of the last change of registered office.
Publication of an advertisement in a legal gazette
To change the registered office of an SASU, you need to publish an announcement in a medium authorized to receive legal announcements : either a journal d'annonces légales (JAL), or an online press service. This is an essential step, as itinforms third parties of your change of registered office.
Please note Publication must take place within1 month of the decision being made.
If you change your registered office in the same département, all you need to do is publish a single notice in the département where your SASU's registered office is located.
On the other hand, if the registered office is transferred to another département, a double notice must be published:
- the first in a legal gazette in the département of the former registered office ;
- the second in a legal gazette in the place of the new registered office.
Declaration of transfer of registered office
The transfer of your SASU's registered office must be declared withinone month on the Guichet unique website. When making this declaration, you must provide the following supporting documents :
- a copy of the deed transferring the registered office;
- a copy of the updated bylaws ;
- proof of occupancy of the new premises: lease contract, electricity bills, etc. ;
- proof of publication of the notice in a legal announcement medium;
- if the head office is transferred to another département: a list of the company's successive head offices since registration, signed by the legal representative.