Hello Specki, when we talk about a "real" bungalow (and not what others understand by it), it has a so-called cold roof. The floor is always tempered the same as outside. Usually, you can just stand in the middle. Where should a sub-distribution go? Where should the heating be placed? Additionally, you lay all media upwards to distribute them downwards from there. A bungalow has a relatively flat roof and definitely no attic. Proven a thousand times: house connection room on the ground floor or basement. Which federal state are we talking about?