Subletting an Office: What the Law in France Really Says

Do you have offices that are empty on Monday and Friday? Open spaces that are half occupied since the switch to remote working? You are not alone. In France, it is estimated that 30-40% of office space is underused in businesses that practice hybrid work. And in the meantime, the rent is falling every month, inexorably.

The good news: there are legal ways to make these spaces profitable. But before you start, it's better to understand what you're getting yourself into. French law very precisely defines what you can do with your offices, and some options are much more restrictive than others.

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The basic rule: subletting is forbidden... unless authorized

Let's start with what many are discovering too late: by default, subletting your offices is forbidden.

It's the article L145-31 of the Commercial Code who asks it clearly: “unless otherwise stipulated in the lease or agreement of the lessor, any total or partial subletting is prohibited.”

In other words, before even contacting a potential tenant, you depend entirely on the goodwill of your owner. And if you sublet without authorization, you are exposed to serious consequences: termination of your lease, reimbursement of rent received, or even legal proceedings.

But it's not the only option! Because obtaining authorization is still possible, among other options that exist for those who do not want to depend on this process.

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How do you get permission from your landlord?

If you choose the traditional subletting route, you have two options:

1. Your lease already contains an authorization clause. Look for a clause in your contract that mentions subletting. Some modern commercial leases already include it. If this is your case, you have the green light, subject to complying with the conditions provided.

2. Your lease does not provide for anything: ask for the agreement of the lessor. You have to get his agreement. In writing first and foremost. Registered mail, detailed project, area concerned, planned rent. The clearer and more reassuring your request is, the more likely it is to succeed. But nothing guarantees a favorable response, or a reasonable processing time.

Sora advice: Highlight the benefits for the lessor. An occupied space is a maintained space, and a primary tenant who reduces their expenses is a tenant who stays. This is often the argument that tips the scales. Especially since if you use a service provider like Sora, he will be the guarantor of the smooth running of the subletting.

This dependence on the lessor is one of the first reasons why many businesses prefer to explore other, more autonomous models to enhance their spaces.

The service agreement is the safest alternative to subletting. Its main difference lies in the nature of the contract: it is no longer a question of transferring the use of a premises, but of using an external service provider to ensure its operation. Thus, the main tenant provides a range of services, such as reception, maintenance, access to equipment or even the management of common areas, for the benefit of the occupants, who have no right to a lease. Thus, there is no need for a clause in this case, because it is not strictly speaking a subletting.

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The golden rule: sublease rent cannot exceed your rent

This is the rule that many people ignore, and that can severely limit your profitability. The article L145-31 of the Commercial Code quoted above is formal: The rent for the sublease cannot be higher than the main rent.

In other words: if you pay €5,000 per month for your 500 sqm, you cannot sublet 250 sqm to €3,000 per month (which would be equivalent to charging €6,000 pro rata per sqm). If your subrent exceeds the main rent, the law also allows your landlord to demand an upward revision of your own rent. Not the desired effect.

This ceiling can seem frustrating when you're looking to optimize your revenue. However, it only applies to subletting in the strictly legal sense of the term, and not to the service agreement.

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The risks in case of unauthorized subletting

Failure to comply with these rules can have serious consequences:

• Judicial termination of the lease : your lessor can ask the court to cancel your contract for breach of your obligations.
• Reimbursement of rent received : the amounts collected can be claimed from you.
• Damages and interests : if your lessor suffers damage, he can ask for financial compensation.
• Expulsion : in the event of cancellation, you and your occupant may be forced to leave the premises.

These are all risks that justify choosing the right legal framework from the start, and opting for the model that best suits your situation.

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Commercial lease, professional lease... or service agreement?

The nature of your arrangement has a direct influence on your rights and freedom of action.

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The commercial lease (3-6-9)

The most common regime for businesses, governed by articles L145-1 and following of the Commercial Code. Strict supervision, mandatory lessor authorization, rent ceiling, formalities at each stage. Strong legally, but not very flexible on a daily basis.

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The professional lease

Intended for liberal professions, subject to a slightly more flexible regime. Contractual freedom is greater, but the same logic of dependence on the lessor applies in a large part of cases.

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The precarious employment agreement

An unknown alternative: no real lease, but an agreement limited in time, with fewer rights for the occupant and fewer constraints for you. Useful for testing a collaboration or welcoming a partner from time to time, but precarious by definition, and therefore not very suitable for sustainable projects.

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The service agreement

This is often the most fluid option for businesses that want to enhance their spaces without making it a cumbersome legal subject. Rather than “renting” a space in the legal sense, you offer a third-party company access to it as part of a service agreement : workstations, connections, meeting rooms, associated services... The occupier does not acquire any rights to the premises since he has access to a global service. This model goes beyond the scope of the status of commercial leases: no imposed rent ceiling, no authorization procedure specific to each new tenant, and much greater flexibility over duration and conditions. For businesses looking to make their offices profitable without becoming a property manager, this is naturally the framework that makes the most sense.

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In summary: the 5 rules you need to know before starting

1. Check your lease : look for an authorization clause or ask for the written agreement of your landlord before any traditional subletting.
2. Respect the rent limit : in strict subletting, you cannot exceed your main rent in proportion to the areas.
3. Notify the lessor each time a sublet contract is signed.
4. Choosing the right legal framework right from the start: it conditions your operational freedom and your potential income.
5. Report income collected in your accounts, regardless of the form used.

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Enhance your offices, without the administrative hassle

You now have the basics to understand what the law allows. Classic subletting remains a viable option, but it involves procedures, dependencies and ceilings that can hinder your project.

It is precisely for these reasons that Sora turned to service delivery : to offer businesses a model without the constraints of commercial leases. No fixed rent ceiling, no formalities to repeat, no dependence on the goodwill of the lessor for each new tenant. Businesses like Sopra Steria already trust us to transform their unused sqm into real income, without drowning in paperwork.