Linked to the thread: B Permit: How long can you spend outside the country? here.

Here on B permit, working. My question is can I physically remain in Switzerland, keeping my valid B permit, paying taxes, paying healthcare insurance, mobile bills etc but NOT be paying rent at a fixed address? Theoretically... without deregistering but not having permanent address here.

I will move out of my apartment end of September and I believe my landlord will tell the authorities (Canton Zug). I have limited times I can move out so this is fixed but will set up a PO box and redirect post. Then I plan to travel around Switzerland, few weeks here or there, probably staying in a mix of hotels, BnB's and maybe another AirBnB. I'm looking at a stint in the mountains, down at the Italy border, Geneva,... all over really.

In short will anyone notice I'm missing for 6/8 weeks or are cantons efficient enough to keep up?

You have to register at a proper address somewhere. Maybe ask a friend if you can use their address.

Assuming I’m Billy no mates…Do you think a hotel address might work?

Depends on the canton and how long you stay there. And bear in mind every time you do register somewhere else, you're going to be paying a fee for the new permit.

Really you shouldn't have tried to save money by giving up your place in September; would have been better to keep it and then just deregistered when you finally move to your new place.

It is your responsibility to prove that you have remained resident, not the other way around. Pretty hard to do if you are behaving like a tourist...

It is probably a good idea to find some kind of permanent address, just in case you have to explain yourself. No point putting your permit at risk. Is there no friend that would allow register at their address or something like that?

No. Only if you are actually staying at the hotel the whole time.

Well, occupying a room and paying for it would suffice. Only that will end up more expensive than keeping the flat longer would have.

OP you're talking 4-6 weeks. If your permit doesn't need updating exactly during that time of other official contacts need to be made, you'll probably get away with it. You will be fined for late registration of your new address in November (it's two weeks) as they will notice your absence then. That is not foreigner-specific.

An other problem could be, if you quit your job as well and your permit is dependent on it ....

__________________
It's all a matter or perspective.
So move your butt and look at it from the other side

Thanks everyone... I consider this answered... No point me trying to register somewhere new every couple of weeks so will find someone who will accept me as a absentee tenant

Good choice.

We are renting a room in Zurich nice and cheap. You could dump your stuff in it and with no moving in/out fees, you could specify notice period etc. I can't imagine it being more expensive than keeping a flat. Shock horror, you could even stay in it now and then.

This doesn’t exactly apply to me since I am a Swiss citizen. I am registered at a property I own but because of Covid have been staying with my daughter in UK since 30 August 2020 and renting my flats (2) to vacationers through an agency. Commune and Canton don’t seem to care so long as I pay tax on everything. Been in UK long enough to have settled status for Brexit so I am double taxed in part.