That will be about 4.50 meters at the back / 5.20 meters at the front. What you see drawn there are the wall heights folded into the surface: contrary to common lay assumptions, boundary distances are not fixed at 3 meters (or 2.50 meters, depending on the federal state), but (also depending on the state building code) proportions of the building height / eaves height / wall height. Apparently, the house here initially has a height of 6.465 meters and then roof structures or recessed exterior wall parts (or a gable) of 4.99 meters, which in turn count as one third in the calculation. Half of these 6.465 meters and one third of the additional 4.99 meters (i.e., 1.66 meters) is 4.07 meters boundary distance of the house. The desired measurements can then only be estimated derived from this.