Student housing shortage in Switzerland: Golden rules for subletting in 2026

Every year, as the start of the academic year approaches, it is the same uphill battle. Finding student housing in Switzerland has become a real trial of strength. At Roomlala, we are monitoring this situation closely: between 2022 and 2024, the overall supply of rental housing dropped by 18% in Switzerland. Faced with this alarming shortage, a supportive and pragmatic solution has emerged with force: subletting. Indeed, subletting offers jumped by 42% over the same period, becoming an essential pillar of student accommodation. But be careful; while this practice is a fantastic opportunity, it must follow strict rules. In 2026, how can you navigate the legal framework of subletting in Switzerland with peace of mind? A breakdown.

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

The housing crisis is hitting major Swiss university cities hard. Whether in Geneva, Lausanne, Zurich, or Fribourg, students are facing exorbitant rents and fierce competition for the smallest studio. It is in this tense context that homestay accommodation and subletting make perfect sense. For many primary tenants with a spare room, hosting a student is a wise way to share costs while providing a huge service.

It is crucial to remember a fundamental truth that is often overlooked: in Switzerland, subletting is a right for the primary tenant, not a simple favor granted by the landlord. This right is firmly anchored in law, specifically in Article 262 of the Code of Obligations (CO). Therefore, if you read a clause in your lease agreement that simply prohibits subletting, know that it is legally void under Article 257 of the CO.

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

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

Obtaining the landlord's consent: The essential golden rule

Why is prior consent indispensable?

While subletting is a right, doing it in secret is the worst of ideas. Prior consent from the landlord (or the property management company) is absolutely mandatory. Subletting a room to a student without informing your landlord exposes you to severe sanctions, up to and including 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. First, if you refuse to communicate the terms of the sublet to them. Second, if the terms of this sublet are abusive (notably if you are making a profit). Third, if the sublet presents major disadvantages for the landlord (for example, overcrowding of the apartment or proven noise disturbances).

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 company by detailing the rent requested and Léa's identity. The management company cannot legally oppose it, because Marc respects all conditions and the apartment is far from overcrowded.

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

Best practices for formulating your request

Although the 2024 reform, which required mandatory written consent from the landlord, was rejected, common sense dictates always leaving a paper trail. At Roomlala, we highly recommend that you formulate 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 to leave no room for justified refusal. You must include the full identity of the student subtenant, the expected duration of the sublet (even if it is indefinite), the use that will be made of the room (student housing), and above all, the amount of rent you will collect.

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

• A formal letter: Requesting consent for the sublet.
• The draft contract: A copy of the sublease agreement you intend to sign with the student.
• Financial information: The detail of the sublet rent calculation to prove the absence of profit.
• Subtenant contact details: Surname, first name, and status (student).

Once the letter has been sent, wait for the written response from your management company or landlord before handing over the keys to the student. In Switzerland, management companies are accustomed to these procedures, especially as the start of the university year approaches. If your file is complete and complies with the law, approval is just 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 to share costs, not for personal enrichment. If the landlord discovers that you are making a profit at the expense of a student, they are entitled to demand the termination of your lease and the reimbursement of the excess amount.

The rent requested from the student must correspond solely to the principal rent calculated proportionally to the occupied surface area. A fair share of utility costs (electricity, internet, heating) must be added. A reasonable surcharge (generally tolerated between 10% and 20% maximum) is only justified if the room is fully furnished by you, 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, including utilities. She wishes 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% surcharge for the furniture, making a total rent of 880 CHF per month.

On the Roomlala platform, we encourage fair and supportive pricing. Faced with the shortage of student housing, proposing an affordable rent, calculated as precisely as possible, means actively participating in resolving the crisis. Furthermore, a fair rent ensures a healthy relationship without ulterior motives with your subtenant.

Drafting a solid sublease agreement

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

It is therefore absolutely crucial to sign a sublease agreement in due form with the student. This written document will protect both parties. It must clearly stipulate the amount of rent, the included utility costs, the termination procedures (notice period), and the rules of shared living. Never settle for an oral agreement, even if you hit it off very well during the viewing.

Do not forget to carry out a detailed inventory check upon the arrival and departure of the student. This is a step often neglected in homestay accommodation, but it is vital to avoid conflicts related to potential damage. In addition, you are entitled to ask for a rent guarantee (security deposit) from your subtenant, which cannot exceed three months' rent, to be deposited in a blocked bank account in their name.

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

Hosting a student in your home: A human and supportive adventure

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

For the primary tenant, it is also an opportunity to break the solitude, to energize their daily life, and to discover new cultures, especially 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 sublease agreement helps to guarantee harmonious cohabitation.

We advise you to organize a preliminary meeting (in person or via video call) before validating the sublet. Discuss your lifestyles, the use of the kitchen, and rules regarding guests. At Roomlala, we firmly believe that the human connection is just as important as respecting the legal rules of Article 262 of the CO.

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