Large garage 7 x 10 meters with shed roof - determine middle wall height

Good evening everyone.

I need some professional advice :-)

I plan to build a garage about 7.50 x 9.50 meters. Between the 7.5m wide garage and the house, there should be a 2-meter wide passage.
The garage should be covered with a shed roof towards the house. (So that you can enter the house dry :) )

Can someone tell me and help me how to determine the average wall height?

The shed roof should be as flat as possible and is then about 9.50 meters wide in total.

We are in the [Freistellungsverfahren] with our construction project, and if we as builders keep an average wall height of 3 meters for the garage, we can carry out the garage without a new building application.

Unfortunately, I have no idea at all how to determine the average wall height... :p

Mathematics basic knowledge :p
I don't voluntarily do that for others either. After all, that's what the architect gets paid for.

42. For all statements with more nutritional value, significantly more facts would be needed. Numerous contributions have already been made regarding the average wall height of [Grenzgaragen], in which everything that we need more "input" on has been said.

So then, I'll give it a try:

The average wall height is logically determined by adding both side heights at the wall ends and then halving the result. For the height, the intersection between the outer edge of the wall and the roof covering is decisive; roof overhangs do not count. That's the theory on the straight green field. In reality, the heights at both wall ends are taken from the existing terrain (before erecting the wall) up to the already mentioned intersection with the roof covering. So if the garage is built in an excavation, a lower wall height is to be assumed than for the same garage on a mound, because this then also counts.

Apart from the height of the garage, how about the length? In NRW, a maximum of 9.00 m is allowed on a property boundary. Yours is supposed to be 9.50 m long. Isn't the garage located on the boundary?

Not only in Bavaria:

Already nicely illustrated here.