On explicit inquiry about air heat pump. Only geothermal heat was approved. Can you maybe give me a "source" according to which I do not have to get the "not" approved, although the development plan depicts all views of the house and property and that is a change? Thank you very much.
No, I cannot give you a source because there isn't one. It is exactly the other way around; the development plan including the textual provisions specifies what is permitted and what is prohibited. If something is not prohibited (and does not contradict general building regulations), it is allowed. That's why I keep insisting on where it states that the air-to-water heat pump is forbidden.
And according to your description, it is allowed (possibly observing distance requirements). In this respect, my statement fits that the technical committee is not keen on it. You can also install a purely indoor unit without affecting the exterior appearance.
P.S. Don't cling to colorful pictures.