New subletting rules in Switzerland: How to rent out a room legally in 2026

Faced with inflation and the persistent housing shortage in major Swiss urban centres, sharing your apartment has never been more relevant. Many tenants are considering hosting a student or young professional to help ease their monthly expenses. However, with recent political debates, many are wondering whether this practice is still permitted. Subletting in Switzerland 2026 is at the heart of all questions, especially after the legislative turbulence of recent years. At Roomlala, we support thousands of hosts and tenants in their day-to-day procedures. Our mission is to offer you a clear and secure framework. In this article, we break down the current state of tenancy law regarding subletting, so that you can offer your room with complete peace of mind and in strict compliance with Swiss law.

Subletting in Switzerland 2026: What the Code of Obligations says

The Swiss legislative landscape has had a few scares recently, but tenants can now breathe easy. The draft revision of the Code of Obligations, which aimed to drastically restrict the right to sublet, was definitively rejected by popular vote on 24 November 2024. This massive rejection by the public has helped maintain a favourable and flexible legal framework for tenants. In 2026, subletting therefore remains a fundamental right guaranteed by Article 262 of the Code of Obligations (CO). This stability is excellent news for anyone wishing to earn money from an unoccupied room.

Read also: Subletting in Switzerland in 2026: The actual rules for letting out your room, 2026 Housing Law: What changes for room rentals in Spain and Local Accommodation 2026: Why choose long-term rental in Portugal

In practical terms, what does this mean for your right to sublet? First of all, the strict limitation of the subletting duration to two years, which was at the heart of the aborted 2024 reform, never came into effect. You can therefore absolutely sublet a room for an indefinite period, as long as you intend to move back into the entire home in the future or continue to live there at the same time. This flexibility is particularly well-suited to long-term shared housing or hosting students over several academic years.

Furthermore, it is crucial to know that any clause included in your main lease agreement prohibiting subletting as a matter of principle is legally void. Many property management companies still try to insert standard restrictive clauses, but federal law always takes precedence over these contracts. If your lease states that "subletting is formally prohibited," this mention has no legal value before the Tenancy Tribunal. You retain your inalienable right to share your home.

Let's take a concrete example: Sophie, a tenant in a 4-room apartment in Geneva, saw her children leave the family nest. Her lease, signed in 2015, indicated a prohibition on subletting. Thanks to the maintenance of Article 262 of the CO, Sophie was able to ignore this unfair clause. By following the legal procedures that we will detail, she now hosts an international intern via Roomlala, thus supplementing her income in a completely legal way without fearing eviction.

Landlord consent for subletting: The golden rule to respect

While the right to sublet is guaranteed, it is not unconditional. The absolute rule, which has not changed in 2026, is the obligation to obtain the landlord's consent for subletting. You cannot under any circumstances host a sub-tenant without informing your landlord or property management company beforehand. Proceeding with a clandestine sublet is a serious violation of the main lease agreement. This exposes the tenant to early and immediate termination of their lease, with a notice period of just 30 days by the end of a month.

However, rest assured: the landlord cannot refuse your request arbitrarily. The law is very clear and limits the grounds for refusal to three specific situations. Firstly, if you refuse to provide them with the terms of the sublease (identity of the sub-tenant, amount of rent, duration). Secondly, if the terms of the sublease are abusive, particularly if you are making an excessive profit. Thirdly, if the sublet presents major disadvantages for the landlord, for example if you sublet a room in a strictly family-oriented building to a band of musicians who rehearse at night.

It is therefore imperative to do things by the book. At Roomlala, we always advise formalising this process in writing. Although the law does not formally require written form, a registered letter with acknowledgement of receipt is your best legal weapon in the event of a dispute. This document will prove that you have acted transparently and in good faith, thus protecting your own right to housing.

A classic use case is that of Marc, a tenant in Zurich, who went on a sabbatical for six months. He sent a complete file to his property management company detailing the profile of his temporary sub-tenant and the exact rent requested. Faced with this transparency, the management company had no legal grounds for refusal and approved the request in less than two weeks, allowing Marc to leave with peace of mind.

How to draft your request to the landlord or management company?

For your request to be unassailable, it must be exhaustive. Your letter must strictly mention the full name of your future sub-tenant, the start date of the sublet, the expected duration (even if it is indefinite), the number of rooms sublet and, above all, the exact rent you will be receiving. We strongly recommend that you attach a copy of the draft sublease agreement to your letter.

Timing is also crucial. Do not wait until the day before your sub-tenant moves in to send your request. Ideally, send your registered letter at least 30 to 60 days before the planned start date. This gives the property management company time to process the file and respond officially. Proper foresight demonstrates your seriousness and greatly facilitates relations with your building's management.

What should you do if the management company turns a deaf ear and does not respond to your letter? Under Swiss law, the landlord's silence after a complete request sent within the required time does not automatically count as acceptance, but it puts you in a position of strength. If you have proof of receipt of your letter and your sublet presents no legal grounds for refusal, you can generally proceed with hosting your sub-tenant. In the event of a subsequent challenge, the courts often consider that the landlord has abused their right by not responding.

Setting the rent for your room: Avoiding abusive profits

One of the most important points of vigilance regarding subletting concerns setting the rent. Swiss law is uncompromising on this point: the sublet must not generate any abusive profit for the main tenant. The goal of subletting is to share housing costs, not to get rich at the expense of the sub-tenant or the landlord. If the management company finds that you are making a lucrative profit, it is entitled to refuse the sublet or terminate your lease.

The rent calculation must therefore be strictly proportional to the surface area let and the use of common areas. To determine the fair price, you must take the amount of your main rent (including charges) and divide it by the total surface area of your apartment. Then, you multiply this price per square metre by the surface area of the sublet room, to which you add a share for the use of shared spaces (kitchen, bathroom, living room).

If you let the room furnished, which is generally the case on Roomlala, Swiss case law allows for a reasonable increase in rent to compensate for wear and tear on your furniture and equipment. This increase is generally accepted at between 10% and 20% of the proportional rent of the room, depending on the quality and value of the furniture provided. It is essential to be able to justify this increase in the event of an inspection by the management company.

Let's take a calculation example in Lausanne. You rent a 4-room apartment (80m2) for 2000 CHF per month. You sublet a 15m2 room. The common areas represent 40m2. The sub-tenant therefore enjoys their room (15m2) + half of the common areas (20m2), i.e., 35m2 in total. The strict proportional rent would be (2000 / 80) * 35 = 875 CHF. By adding a 15% increase for furniture and access to your internet connection, you can legally set the room rent at around 1000 CHF per month.

Homestay law in Switzerland and cantonal specificities

It is important to distinguish long-term shared housing from very short-term tourist-style rentals. Although federal law (the CO) applies to all forms of subletting, cantons and municipalities have the right to impose additional restrictions, particularly to combat the housing shortage. Homestay law in Switzerland can therefore vary significantly depending on whether you are in Geneva, Vaud, or Zurich.

For example, the canton of Geneva imposes strict rules on repeated short-term sublets, which can be reclassified as a change of use of the dwelling, requiring authorisation from the State. On the other hand, if you host a student for a semester or a year via Roomlala, you remain within the classic framework of long-term subletting, which is much less targeted by these cantonal restrictions. Always check with your municipality if you have any doubts.

Finally, do not forget the tax aspect. Income generated by a sublet, even if it only serves to cover part of your rent, must theoretically be declared for tax purposes. However, as you are simultaneously deducting the corresponding share of the rent from your own expenses, the operation is fiscally neutral in the majority of cases, since there is no net profit. Transparency with the tax authorities is the best policy.

Shared housing legality in Switzerland: Your responsibilities as a main tenant

Engaging in shared housing in Switzerland implies fully understanding the chain of responsibility. As the main tenant, you sign a sublease agreement with your guest. However, vis-à-vis your landlord or property management company, you remain the sole and unique legal contact. You retain full legal responsibility for the home. If your sub-tenant does not pay their share of the rent, it is up to you to cover the shortfall to pay the total main rent to the management company.

This responsibility also extends to the maintenance of the home and any material damage. If the sub-tenant damages the paintwork, breaks a sanitary fitting, or scratches the parquet, the landlord will turn against you, and it is your security deposit that will be affected at the end of the lease. This is why it is fundamental to properly frame the contractual relationship with your sub-tenant.

To protect yourself, you must require two essential things before handing over the keys: a security deposit (generally equivalent to one or two months of the room's rent) and proof of private civil liability (RC) insurance in the sub-tenant's name. Thus, in the event of an incident caused by the latter, it is their insurance that will cover the repairs, preventing you from having to dip into your savings or losing your own security deposit.

Imagine a frequent use case: your sub-tenant leaves the bath running, causing water damage. In the eyes of the management company, you are responsible. However, if you have followed our advice and verified their RC insurance when signing the sublease agreement, your sub-tenant's insurance will intervene directly to compensate the landlord, settling the dispute without impacting your personal finances.

How Roomlala secures your subletting process

Navigating the waters of tenancy law can seem complex, but that is precisely where we come in. At Roomlala, we have designed our platform to offer you a serene, legal, and secure subletting experience. We know that trust is the pillar of successful cohabitation, which is why we provide you with concrete tools to protect your interests as a main tenant.

First of all, our matching system is based on verified profiles. You have access to reviews, identity verifications, and can communicate via our secure messaging system before accepting a booking. Furthermore, rent payments are processed via our platform, which guarantees you receive your money on time, thus avoiding the risks of unpaid rent which is the greatest fear of main tenants.

Next, we support you on the administrative side. Roomlala provides you with clear sublease agreement templates that are compliant with Swiss law. These pre-filled contracts include all the necessary clauses (duration, notice period, inventory of furniture, house rules) to legally frame your shared housing. You no longer need to improvise a document on the back of an envelope.

In summary, subletting in Switzerland in 2026 remains a fantastic opportunity, protected by law, provided that you respect the obligation of landlord consent and the prohibition of abusive profit. By using Roomlala, you ensure you find the ideal candidate while benefiting from a structured framework that respects your legal duties. Do not wait any longer to make the most of your available space and have great human encounters, in complete legality!