Heidi › Housing
What documents does a letting agency ask for to rent a flat in Switzerland?
Six documents, always the same ones: the application form, your ID and your permit, your last three payslips, your employment contract, proof of third-party liability insurance, and above all a debt collection register extract less than three months old.
On top of that comes an unwritten rule that is applied everywhere: your gross income has to be at least three times the rent.
The market is tight: one advert often draws dozens of applications within days. It is not the best tenant who wins, it is the first complete application. Put yours together before you go and view, not after.
How old the debt collection register extract can be
About 17 francs, from the debt collection office in your canton.
The gross income expected
Below that, the letting agency asks for a guarantor.
What goes in the application
| Document | Where to get it | Watch out |
|---|---|---|
| Application form | The letting agency, on its website or at the viewing | Every agency has its own; fill it in completely |
| ID and permit | A copy of your passport or identity card, and of your B, C, L or G permit | Confirmation from your commune is enough if the permit has not been issued yet |
| Last three payslips | Your employer | If you have just arrived, a signed employment contract does instead |
| Employment contract | Your employer | Self-employed: your accounts for the last two years |
| Debt collection register extract | The debt collection office in your canton, online or at the counter | Less than three months old, about 17 francs. This is the one that holds everyone up |
| Proof of third-party liability insurance | Your insurer | Not required by law, but written into nearly every lease |
The debt collection register extract only exists for people already living in Switzerland. If you have just arrived, include your own country's equivalent where there is one, or a letter explaining your situation, together with your Swiss employment contract.
Same for payslips: a signed contract with a Swiss employer often counts for more than three foreign pay statements.
The one-third rule
Annual rent including service charges ≤ one third of annual gross income
This is the rule letting agencies use to rule an application out, even when they do not say so.
A flat at 1,800 francs a month including service charges comes to 21,600 francs a year. So you need roughly 64,800 francs of annual gross income, or 5,400 francs a month, to get through the filter.
Below that, there are three ways round it: a guarantor who supplies a full application of their own, a flatmate or partner whose income is added to yours, or paying several months' rent up front, which some agencies accept.
The rent deposit
When you sign, you pay a deposit of three months' rent at most. That is a legal ceiling: a letting agency cannot ask for more on a residential property.
| Option | How it works | The catch |
|---|---|---|
| Blocked bank account | The money stays yours, in an account in your name, and comes back to you at the end of the lease | You have to find the whole sum at once |
| Deposit guarantee company | You block nothing, the company guarantees the deposit and you pay an annual premium | The premium is gone for good, and you still owe for any damage |
The money you pay in is in your name, and it earns interest that comes to you. The letting agency cannot touch it on its own: it needs your agreement, or a court decision. At the end of the lease, the bank releases it once both sides agree.
Putting the application together in the right order
-
Order the debt collection register extract first
It is the only document that depends on an administration, and the only one that goes out of date. Allow a few days by post, sometimes less online. Everything else you already have.
-
Put it all into a single PDF
An application in six separate attachments comes second to one clean document, with your name and phone number on the first page.
-
Send it within hours of the viewing
Agencies often work through complete applications in the order they arrive. Send yours the next day and it lands behind a dozen others.
Add a five-line covering letter and, if you have one, a reference from your previous landlord confirming that you always paid the rent on time. Neither is asked for — and that is exactly why they make the difference when twenty applications look alike.
The three most common mistakes
- Going to viewings before your application is ready. The debt collection register extract takes several days: by the time you have it, the flat is gone.
- Sending an incomplete application "for now". It is not put to one side, it is ruled out.
- Forgetting third-party liability insurance. The lease requires it, and without proof the signing is put back.
What income do you need for that rent, and exactly which documents in your canton?
Heidi builds the list with you.
Read next
- Retirement as a cross-border worker: AVS, the second pillar and the second right to choose
- Family allowances for cross-border workers: Switzerland or France?
- What happens to my second pillar when I leave my Swiss job?
- Unemployment as a cross-border worker: where to register, who pays and how much?
- G permit: conditions, going home and changing employer
- Quasi-resident status: who can apply, and by when?
- Who gets my taxes as a cross-border worker: France or Switzerland?
- How much do you take home in Switzerland as a cross-border worker?
- How many days of remote work can I do without losing my cross-border worker status?
- Do I have to file a tax return in my first year in Switzerland?
- Am I entitled to a premium subsidy for my health insurance?
- How does the Swiss three-pillar pension system work?
- Can I keep my French health insurance when I move to Switzerland?
- What does a month of living in Switzerland really cost?
- What do I need to do in my first 14 days in Switzerland?
- B, L or C permit: which one applies to me and how do I get it?
- How long do I have to join LAMal after arriving in Switzerland?
Sources
- ch.ch — Ordering a debt collection register extract
- Putting together a rental application in Switzerland: documents and guarantor
- République et canton de Genève — Requesting a debt collection register extract
Written by the Heidi team and updated on 7 November 2026. The fees and the way you order the extract vary from canton to canton. The one-third rule is a letting agency practice, not a legal requirement.