ᐅ Height restriction in the land use plan (building permit / planning permission)

Hello,

my name is Micha, and I am new here. I am about to buy a house with an additional plot of land that I plan to develop in the future. The development plan looks like this:

According to the plan, a two-story building with a height limit is permitted. When I look at the text section, it states:

For single-story buildings, the height of the exterior walls - measured from the intersection of the roof covering over a single-family house (see point 3.2) - may be up to 3.15m (10 feet 4 inches). For buildings that are not necessarily two stories, the height must not be less than 4.30m (14 feet 1 inch) (exterior wall as above).

I don’t fully understand this. So, for one full story (+ attic), my exterior wall can be 3.15m (10 feet 4 inches) high (from the single-family house up to the roof covering). But what about two full stories? What is the maximum height allowed for the building?

Sorry if this is a silly question; I haven’t been reading development plans for very long.

Best regards,
michael