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

Faced with inflation and the persistent shortage of housing in Switzerland's major urban centres, sharing your apartment has never been more relevant. Many tenants are considering welcoming a student or young professional to ease their monthly expenses. However, given recent political debates, many wonder if this practice is still allowed. Subletting in Switzerland in 2026 is at the heart of all questions, especially after the legislative turmoil of recent years. At Roomlala, we support thousands of hosts and tenants in their endeavours every day. Our mission is to provide you with a clear and secure framework. In this article, we break down the current state of tenancy law regarding subletting for you, 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 seen some cold sweats recently, but tenants can now breathe a sigh of relief. The revision project 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 refusal by the population 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 monetise an unoccupied room.

See also: Subletting in Switzerland in 2026: The real rules for renting out your room, 2026 Housing Act: What changes for room rentals in Spain and Local Accommodation 2026: Why choose long-term rentals in Portugal

Practically speaking, what does this mean for your subletting tenancy rights? 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 force. You can therefore perfectly well sublet a room for an indefinite period, as long as you intend to return to live in the entire property in the future or continue to reside there at the same time. This flexibility is particularly suitable for long-term shared housing or for hosting students over several academic years.

Furthermore, it is crucial to know that any clause included in your main lease prohibiting subletting as a 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 strictly prohibited", this statement has no legal value before the Tenancy Court. You retain your inalienable right to share your home.

Let's take a concrete example: Sophie, a tenant of a 4-room apartment in Geneva, saw her children leave the family nest. Her lease, signed in 2015, indicated a ban on subletting. Thanks to the maintenance of article 262 of the CO, Sophie was able to ignore this abusive 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 manner without fear of 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 landlord consent for subletting. You cannot under any circumstances welcome a subtenant without first informing your landlord or property management company. 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 only 30 days for 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. First, if you refuse to communicate the terms of the sublet (identity of the subtenant, amount of rent, duration). Second, if the terms of the sublet are abusive, notably if you are making an excessive profit. Third, if the sublet presents major disadvantages for the landlord, for example if you sublet a room in a strictly family building to a group of musicians who practice 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 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 six-month sabbatical trip. He sent a complete file to his property management agency detailing the profile of his temporary subtenant and the exact rent requested. Faced with this transparency, the agency had no legal grounds for refusal and validated the request in less than two weeks, allowing Marc to leave with peace of mind.

How to draft your request to the landlord or property management agency?

For your request to be unassailable, it must be exhaustive. Your letter must imperatively mention the first and last name of your future subtenant, the start date of the sublet, the expected duration (even if it is indefinite), the number of rooms being sublet and, above all, the exact rent that you will be collecting. We strongly recommend that you attach a copy of the draft sublet contract to your submission.

Timing is also crucial. Do not wait until the day before your subtenant moves in to send your request. Ideally, send your registered letter at least 30 to 60 days before the expected start date. This leaves time for the management agency to process the file and respond to you officially. Proper planning demonstrates your professionalism and greatly facilitates relations with your building's management.

What if the management agency turns a blind eye and does not respond to your letter? Under Swiss law, the landlord's silence after a complete request sent within the deadlines 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 subtenant. In the event of a subsequent challenge, the courts often consider that the landlord 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 rent setting. 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 subtenant or the landlord. If the management agency discovers that you are making a lucrative profit, they have the right to refuse the sublet or terminate your lease.

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

If you rent the room furnished, which is generally the case on Roomlala, Swiss case law allows for a reasonable increase in rent to compensate for the wear and tear of 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 audit by the management agency.

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 subtenant 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 the furniture and access to your internet connection, you can legally set the room rent at approximately 1000 CHF per month.

Swiss homestay law and cantonal specifics

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 communes have the right to impose additional restrictions, particularly to combat the housing shortage. The Swiss homestay law 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 state authorisation. 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 commune if you have any doubts.

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

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

Engaging in shared housing in Switzerland involves fully understanding the chain of responsibilities. As the main tenant, you sign a sublet contract with your guest. However, vis-à-vis your landlord or management agency, you remain the sole and unique legal contact. You retain full legal responsibility for the property. If your subtenant does not pay their share of the rent, it is up to you to bridge the shortfall to pay the total main rent to the management agency.

This responsibility also extends to property maintenance and any material damage. If the subtenant degrades the paintwork, breaks a sanitary fitting, or scratches the parquet, the landlord will turn to you, and it is your security deposit that will be impacted at the end of the lease. This is why it is fundamental to properly structure the contractual relationship with your subtenant.

To protect yourself, you should require two essential things before handing over the keys: a security deposit (generally equivalent to one or two months of the room rent) and a private personal liability insurance (RC) certificate in the subtenant's name. Thus, in the event of a disaster caused by the latter, it is their insurance that will take care of repairs, saving you from having to dip into your savings or losing your own deposit.

Let's imagine a frequent use case: your subtenant lets the bathtub overflow, causing water damage. In the eyes of the management agency, you are responsible. However, if you have followed our advice and checked their RC insurance when signing the sublet contract, your subtenant'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 may seem complex, but that is precisely where we step 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 a 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 ratings, identity verifications, and can communicate via our secure messaging system before accepting a booking. Furthermore, rent payments pass through our platform, which guarantees you receive your money on time, thus eliminating the risks of unpaid rent, which are the biggest fear of main tenants.

Next, we support you on the administrative side. Roomlala provides you with clear sublet contract templates that are compliant with Swiss law. These pre-filled contracts include all the necessary clauses (duration, notice period for termination, furniture inventory, house rules) to legally govern your shared housing arrangement. You no longer need to improvise a document on a corner of a table.

In summary, subletting in Switzerland in 2026 remains a fantastic opportunity, protected by law, provided you respect the obligation of landlord consent and the prohibition of abusive profit. By using Roomlala, you ensure that you find the ideal candidate while benefiting from a structured framework that respects your legal duties. Don't wait any longer to make the most of your available space and meet great new people, all in full compliance with the law!