Development plan "ED" multiple residential units possible?

The question is why the city designated the development area. If they wanted to create space for families, then they will hardly be enthusiastic if someone just wants to make a profit with micro-apartments there. Then such a process can drag on quite a bit.

The stipulations of the development plan do not limit the number of residential units in detached houses. A house with several residential units is legally considered a detached house. The definition of detached house and semi-detached house only refers to the type of building structure

therefore, I am of the opinion that you are allowed to build 4 residential units there.

I agree with your statement about the "single-family house." I cannot see the legend of the development plan. In my opinion, your thinking is regulated in the individual development areas (WAs): the respective WAs regulate whether single-family houses or multi-family houses are allowed. However, I see a semi-detached house (DH) with one granny flat each in the attic (DG) as possible. There are also common floor plans for this, or I know such houses. With a ground area development of 175 sqm, two apartments of 75 sqm each would result. Upstairs then the attic. For each dwelling unit, one parking space each. There are quite a few threads here that then do not work anymore with the parking area, waste area, cellar replacement room, etc.

or more parking spaces, depending on the parking space regulations this can also be 1.5 per residential unit.