I travel between London and Zurich during school term, as my daughter goes to interntional school here. And I only need the apartment for half 50% of the time in school term, the rest of the time including school holidays, I am in London.
This year I was here less than 150 days for example, the rest of the time the flat is fully furinished but empty.
I don't believe you can use an agency as the rules for subletting are that:
1) You inform the Verwaltung
2) You tell them the conditions of sublet and to whom
3) you have every intention to return to the flat
4) you make no profit
If you have short term renters you will need to go through this each time and the agency will want their fee etc.
Have you thought about permanently renting one room only for example? Or downsizing to a little flat?
Was thinking more in terms of companies or targeted individuals who might need to come into Zurich on a regular basis. How I might find/access those individuals, as Zurich is such an expensive place, and regular avenues for Longer term accomadation, is very much regulated as you rightly pointed out with numerous hoops to jump and navigate
The landlords approval is normally just for one sub-tenancy. Landlord might give a blanket approval. A profit is possible if the landlord agrees. The no profit rule does not prevent you to charge a reasonable extra fee for a furnished apartment.
The rules between you and the sub-tenant are the very same as for a normal rental contract which means there are some mandatory provisions which cannot be changed. Please read from Art. 253 Code of Obligations onward. https://www.admin.ch/opc/en/classifi...ndex.html#a253
The Mieterverband has additional information and also an contract template
The quesion is, how much of this "gap" could one arbitrage for himself, disregarding the fact that is morally totally questionable?
The intent is to stay totally legal before someone misunderstands.
Can one let 2 rooms separately as a WG, where the sum of both are higher than the original contract? What's a reasonable markup for a furnished sublet apartment? May I do AirBnB with the place if the Agency agrees (would they even agree)?
Yes you can sublet separate rooms.
But you must fulfill the condition of showing you will return - I.e. no unlimited contracts.
Some agencies will claim it's one year max but the law puts no limits but you need an "intention to return".
Do not know about AirBnB.
K