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

Faced with inflation and the persistent housing shortage in Switzerland's major urban centres, sharing your apartment has never been more relevant. Many tenants are considering hosting a student or a young professional to ease their monthly expenses. However, with 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 efforts every day. Our mission is to provide you with a clear and secure framework. In this article, we break down the current state of lease law regarding subletting for you, so that you can offer your room with complete peace of mind and in the strictest 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 draft revision of the Code of Obligations, which aimed to drastically restrict the right to sublet, was definitively rejected by popular vote on November 24, 2024. This massive refusal by the population has maintained 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 everyone who wishes to monetize an unoccupied room.

Read 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 prioritize long-term rentals in Portugal

Concretely, what does this mean for your subletting lease rights? First of all, the strict limitation of the subletting duration to two years, which was at the heart of the failed 2024 reform, never entered into force. You can therefore absolutely sublet a room for an indefinite period, as long as you intend to return to live in the entire home in the future or continue to reside there concurrently. This flexibility is particularly well-suited for long-term shared housing or hosting students over several academic years.

Moreover, it is crucial to know that any clause included in your main lease that prohibits 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 Rental 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 prohibition on subletting. Thanks to the maintenance of Article 262 of the CO, Sophie was able to ignore this abusive clause. By following the legal steps that we will detail, she is now hosting 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 follow

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 subtenant without first informing your landlord or your property management company. Proceeding with clandestine subletting is a serious violation of the main lease contract. This exposes the tenant to an early and immediate termination of their lease, with a notice period of only 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 sublet (identity of the subtenant, amount of rent, duration). Secondly, if the terms of the sublet 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 according to the rules. At Roomlala, we always advise formalizing 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. He sent a complete file to his management company detailing the profile of his temporary subtenant and the exact rent requested. Faced with this transparency, the management company 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 write your request to the landlord or management company?

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 sublet and, above all, the exact rent you will be collecting. We highly recommend that you attach a copy of the draft sublease agreement 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 planned start date. This gives the management company time to process the file and respond to you officially. Adequate anticipation demonstrates your professionalism and greatly facilitates relations with your building's administration.

What 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 deadlines does not automatically equate to acceptance, but it puts you in a position of strength. If you have proof of receipt of your letter and your sublet does not present any legal grounds for refusal, you can generally proceed with hosting your subtenant. In the event of a subsequent challenge, courts often consider that the landlord abused their rights by not responding.

Setting the rent for your room: Avoiding abusive profits

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

The rent calculation must therefore be strictly proportional to the surface area rented and the use of common areas. To determine the fair price, you must take the amount of your main rent (including utilities) 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 rent the room furnished, which is generally the case on Roomlala, Swiss case law tolerates a reasonable rent increase to compensate for the wear and tear of your furniture and equipment. This increase is generally accepted 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 company.

Let's take a calculation example in Lausanne. You rent a 4-room apartment (80m2) for 2000 CHF per month. You are subletting 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 furniture and access to your internet connection, you can legally set the rent for the room at approximately 1000 CHF per month.

Homestay laws 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 fight against the housing shortage. Homestay laws 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 in the use of the dwelling, requiring state authorization. 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 is only used to cover part of your rent, must theoretically be declared for tax purposes. However, since you are concurrently deducting the corresponding portion of rent from your own expenses, the operation is fiscally neutral in most 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 responsibilities. As the main tenant, you sign a sublease agreement with your guest. However, vis-à-vis your landlord or your management company, you remain the sole and only legal point of contact. You retain full legal responsibility for the accommodation. 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 company.

This responsibility also extends to the maintenance of the dwelling and any potential material damage. If the subtenant 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 impacted at the end of the lease. This is why it is fundamental to clearly structure the contractual relationship with your subtenant.

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 rent) and proof of private civil liability (RC) insurance in the subtenant's name. Thus, in the event of damage caused by the latter, it is their insurance that will cover the repairs, preventing you from having to dip into your savings or lose your own security deposit.

Let's imagine a frequent use case: your subtenant lets the bathtub overflow, 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 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 lease law can 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 checks, and can communicate via our secure messaging system before accepting a booking. Furthermore, rent payments are processed through our platform, which guarantees that 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 front. Roomlala provides you with clear sublease agreement templates that comply with Swiss law. These pre-filled contracts integrate all the necessary clauses (duration, notice of 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 on abusive profit. By using Roomlala, you ensure that 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, all perfectly legally!