Sauna in the garden in Bavaria - distance to neighboring property

It does not contain living rooms or fireplaces (Definition of fireplace: structural and fixed – made of building materials or components – installations in which heat is generated by burning solid, liquid, or gaseous substances.).

Whereas the definition of living room is apparently disputed. A sauna is intended to be deliberately stayed in (unlike, for example, a garage which one enters by definition to get into the car), on the other hand a sauna is rather not suitable for longer stays, especially when I do a sauna infusion ;) From everything I found in my research, the sauna is in a borderline area because of the living room and is a gray area that has not yet been legally clarified.

Yeah, a sauna is simply a living area and therefore not a privileged auxiliary building that may be constructed without a boundary setback. You might just as well build a billiard room, a fitness room, or a home theater. You won’t get approval for that, and if someone complains, it won’t end well. That it is still regularly built that way is of course another matter.

Well ... that would possibly mean that a garage with a workbench would not be allowed to be built on the property boundary (?). How long would one then be allowed to stay in the garage at most? :)
A garage party would then also be prohibited if the garage is on the property boundary? Or does only the primarily intended use count?
In the case of a sauna, I would now have interpreted the lounge as the room I would possibly designate as a relaxation room.

Warum?

-significantly lower power consumption -not harmful to the environment -almost no warm-up time -deep effect for back pain -longer sessions possible -better tolerated with various pre-existing conditions -can be used daily -somewhat cheaper in terms of price Personally, I like both, but you simply get much more from the heat cabin at home.

...
but at home you simply have much more from the heat cabin.

I see it differently. For me, the recovery effect and the sauna experience would be the main focus. In the garden, I see huge advantages of a sauna for myself :)

Sauna is not just expensive warm air, but a way of life with dear people