Student housing shortage in Switzerland: The golden rules of subletting in 2026

Every year, as the start of the university term approaches, it is the same trial. Finding student accommodation in Switzerland has become a real endurance test. At Roomlala, we are observing this situation closely: between 2022 and 2024, the overall supply of rental housing fell by 18% in the Swiss territory. Faced with this alarming shortage, a solidarity-based and pragmatic solution has emerged with force: subletting. Indeed, subletting listings have jumped by 42% over the same period, becoming an essential pillar of student accommodation. But beware, while this practice is a fantastic opportunity, it must follow strict rules. In 2026, how can one calmly navigate the legal framework of subletting in Switzerland? Here is a breakdown.

Subletting in Switzerland: A fundamental right in the face of the crisis

The housing crisis is hitting major Swiss university cities hard. Whether in Geneva, Lausanne, Zurich, or Fribourg, students are coming up against exorbitant rents and fierce competition for the smallest studio. It is in this tense context that homestays and subletting take on their full meaning. For many primary tenants with a spare room, hosting a student is a sensible way to share costs while providing an immense service.

It is crucial to recall a fundamental truth that is often overlooked: in Switzerland, subletting is a right for the primary tenant, not a simple favour granted by the landlord. This right is firmly anchored in law, specifically in article 262 of the Code of Obligations (CO). Consequently, if you read a clause in your tenancy agreement that simply bans subletting, know that it is legally void according to article 257 of the CO.

This right was also recently reaffirmed by Swiss citizens. During the federal vote on 24 November 2024, the people rejected by referendum (at 51.6%) a bill that aimed to significantly tighten the rules on subletting. This victory, supported in particular by the ASLOCA (Swiss Tenants' Association), ensures the maintenance of a balanced legal framework, allowing tenants to continue offering rooms to students without suffering suffocating administrative constraints.

At Roomlala, we welcome this legal stability. It helps to reassure potential hosts. Do you have an unoccupied room? You have the right to sublet it. However, this right comes with essential duties. The law protects the tenant, but in return, it requires total transparency towards the landlord. It is on this balance that the success of a peaceful cohabitation rests.

Obtaining the landlord's agreement: The essential golden rule

Why is prior agreement essential?

While subletting is a right, doing it in secret is the worst possible idea. Prior agreement from the landlord (or the property management agency) is absolutely mandatory. Subletting a room to a student without informing your landlord exposes you to severe sanctions, going as far as the immediate termination of your own lease for just cause. Never take this risk.

The good news is that the landlord cannot refuse your request arbitrarily. According to Swiss law, they can only oppose it for three strict and clearly defined reasons. Firstly, if you refuse to communicate the terms of the subletting. Secondly, if the terms of this subletting are abusive (particularly if you are making a profit). Thirdly, if the subletting presents major disadvantages for the landlord (for example, overcrowding of the apartment or proven noise pollution).

Let's take a concrete use case: Marc, a tenant of a large 4-room apartment in Neuchâtel, has been living alone since his children left. He decides to sublet a room to Léa, a first-year student. Marc informs his management agency by detailing the rent requested and Léa's identity. The agency cannot legally oppose this, as Marc is respecting all conditions and the apartment is far from being overcrowded.

At Roomlala, we support our users in these procedures. We advise you to always play the card of transparency. A landlord reassured by an honest and proper approach will be a benevolent partner. Trust is the keystone of homestay accommodation.

Best practices for making your request

Although the 2024 reform, which required mandatory written agreement from the landlord, was rejected, common sense dictates always leaving a trail. At Roomlala, we strongly recommend that you make your subletting request in writing, ideally by registered letter. This protects you in the event of a future dispute and proves your good faith.

Your letter must be precise and complete so as to leave no room for a justified refusal. You must include the full identity of the student subtenant, the planned duration of the subletting (even if it is indefinite), the use that will be made of the room (student accommodation), and above all, the amount of rent you will receive.

Here is a list of elements to prepare for your file:

• A formal letter: Requesting consent for the subletting.
• The draft contract: A copy of the subletting contract that you intend to sign with the student.
• Financial information: The detail of the calculation of the sub-rent to prove the absence of profit.
• The subtenant's contact details: Surname, first name, and status (student).

Once the letter has been sent, wait for the written response from your management agency or landlord before handing over the keys to the student. In Switzerland, agencies are accustomed to these procedures, particularly as the start of the university term approaches. If your file is complete and complies with the law, the agreement is only an administrative formality.

Rent and conditions: The strict prohibition on making a profit

Calculating the fair rent for your subtenant

This is the most critical point of vigilance in Swiss legislation: it is strictly forbidden to make a profit on a sublet. The purpose of this practice is the sharing of costs, not personal enrichment. If the landlord discovers that you are making a profit on the back of a student, they have the right to demand the termination of your lease and the refund of the overpayment.

The rent requested from the student must correspond solely to the principal rent calculated pro-rata to the surface area occupied. A fair share of expenses (electricity, internet, heating) must be added to it. A reasonable increase (generally tolerated between 10% and 20% maximum) is only justified if the rented room is fully furnished by you, in order to compensate for the wear and tear of the furniture.

Let's take a concrete example to illustrate this calculation. Sophie rents a 100 m² apartment in Geneva for 2000 CHF per month, charges included. She wants to sublet a 15 m² furnished room to a student. The student will also have access to the common areas (kitchen, living room, bathroom) which represent 50 m². The total surface area used by the student is therefore approximately 40 m² (their room + half of the common areas). The basic calculation would be (2000 / 100) * 40 = 800 CHF. Sophie can add a 10% increase for the furniture, i.e., a total rent of 880 CHF per month.

On the Roomlala platform, we encourage fair and solidarity-based rates. Faced with the shortage of student housing, offering an affordable rent, calculated as accurately as possible, is actively participating in solving the crisis. Furthermore, a fair rent guarantees a healthy relationship with no ulterior motives with your subtenant.

Drafting a solid subletting contract

In terms of subletting, the primary tenant becomes the landlord of the student. It is essential to understand that, vis-à-vis your own landlord, you remain the one and only person responsible. If the student does not pay their sub-rent or causes damage in the apartment, it is you to whom the landlord will turn to obtain compensation.

It is therefore absolutely crucial to sign a proper subletting contract with the student. This written document will protect both parties. It must clearly state the amount of the rent, the charges included, the termination terms (the notice period), and the rules of shared living. Never settle for an oral agreement, even if you get along very well during the viewing.

Don't forget to carry out a meticulous inventory check at the start and end of the student's stay. This is a step often neglected in homestays, but it is vital to avoid conflicts linked to any potential damage. Furthermore, you have the right to request a rental deposit (security deposit) from your subtenant, which cannot exceed three months' rent, to be deposited into a blocked bank account in their name.

Using a platform like Roomlala offers you a secure framework. We provide tools to facilitate contact and we strongly recommend the use of standard contracts (such as those provided by the ASLOCA or the Swiss Confederation). Our goal is that this intergenerational or peer-to-peer shared housing experience takes place in the greatest of serenity.

Hosting a student at home: A human and solidarity-based adventure

Beyond the purely legal and financial aspect, subletting a room to a student is above all a fantastic human adventure. Faced with the shortage of housing in Switzerland, opening your door is a strong act of solidarity. For many young people, finding a homestay is the only viable option to continue their studies without falling heavily into debt.

For the primary tenant, it is also an opportunity to break the solitude, to energise your daily life, and to discover new cultures, particularly with international students. It is a win-win exchange where mutual respect and communication are the watchwords. Setting the rules of living from the start in the subletting contract allows for a harmonious cohabitation to be guaranteed.

We advise you to organise a prior meeting (in person or via video call) before validating the subletting. Discuss your rhythms of life, the use of the kitchen, and the rules regarding guests. At Roomlala, we firmly believe that the human match is just as important as the respect for the legal rules of article 262 of the CO.

In 2026, subletting is no longer a simple trend, it is a structural necessity of the Swiss property market. By respecting the golden rules—transparency with the landlord, fair rent, and written contract—you transform a legal constraint into an exceptional opportunity. Ready to take the plunge and help a student find their future cosy nest? Join the Roomlala community and post your listing today, in total security.