Bungalow made of aerated concrete - experiences? DIY beginner questions!

Sorry, the question has nothing to do with my questions and doesn't really belong here. You can also simply note that something like this takes a lot of time and you should be sure that you have that time.

Ceiling height approx. 3.5m with slightly sloping roof, 10° greened

Do you already have the suitable plot?

The roof structure made of laminated timber would be free-spanning over approx. 7m

Flat roof or with gable?

What can you estimate as costs for heating (underfloor heating), water and electricity materials? Just as a rough orientation.....

How many sqm are you thinking of? 100? 200?

At least your wishes sound rather more expensive than usual

Property - Yes and no, we have one we like, but everything is still open ....

100-120sqm, slanted roof (flat roof) with a 10° slope

So, 2-3 bedrooms and 120 sqm or less, and then a large living area and traffic areas, as well as a utility room, seems strange. Especially combined with a ceiling height of 3.50.

The whole thing on 7.80m x 15.50m external dimensions.

With the glulam beams, I would say it goes in the direction of 90cm high; although I don't understand why load-bearing walls should be avoided. In at least half of the bungalow you don't notice anything about the span.

There are a few floor plans that manage the whole thing. We don't need large bedrooms; the ceiling height is, for example, used for loft beds.
90cm? I have now seen some halls with a span of 7-9 meters that get by with 16/32, with a distance of 3m ... sure, insulation and greenery are missing there, but with reduced distance?
Half of the roof can certainly be supported again to save there. Living/dining area is without partition walls.

The whole thing with external dimensions of 7.80m x 15.50m.

Where did I miss this information?