Long narrow plot 170-190 sqm

Underfloor heating is always on anyway, or you don't turn it on and off as needed. Nowadays, houses are so well insulated that they don't just cool down like that. I would be glad if it were possible to keep a room cooler than the rest in our house, but you can forget about that.

like the picture attached in this post?

I don't see anything.
Why don't you just rotate everything by a few degrees so that the garage is completely on the boundary? Alternatively, mirror everything.

I don't see anything. Why don't you just rotate everything by a few degrees so that the garage is completely on the boundary? Alternatively, mirror everything.

Sorry, now here as an attachment. What do you mean by mirror?

What do you mean by mirroring?

Place the garage on the western border and adjust the floor plans accordingly, easiest by mirroring along the central longitudinal axis.

A underfloor heating system always heats anyway, or rather you don’t turn it on and off as needed.

True, makes sense, I hadn’t thought of that at all.

Place the garage on the west boundary and adjust the floor plans accordingly, easiest by mirroring along the central longitudinal axis.

I understand, but then the driveway would be more difficult and the office wouldn’t have such a nice view outside.
Could we build the garage as in my second provisional drawing?

Could we build the garage as in my second, provisional, drawing?

Yes.