Property division duplex house

Hello everyone,

we are about to purchase a plot of approximately 1000m2 for the construction of a duplex. The fair division for both parties is difficult due to the special circumstances, so I am hoping for new ideas from outsiders.

The division proposal shown below comes from us; you can see the building envelope marked in purple/blue. We both consider the two halves to be roughly equal in value and would be willing to take the north side (left). However, the building partner now wants a large garden at the back, away from the street. This is certainly a great idea for the southern plot, but as a result, the northern plot mostly loses the southwest garden and the main garden is then oriented to the northeast. We are now worried that we would not only have to give up the nice garden but also accept an overall dark house.

How do you assess the situation, and does anyone perhaps have a creative idea? An east/west division is unfortunately not possible, as neither party wants to be fully oriented to the west side (street).

Development plan/restrictions
Size of the plot: 1000m2
Slope: no
Maximum buildable area with 175m2 footprint
Building envelope, building line and border
Edge development: on the north half a tall hedge runs along the entire length, on the south side a 2.5-story house and two garages (only one shown on the plan)
Number of parking spaces: 4
Number of floors: 2 full floors
Roof shape: hipped roof
Style: urban villa
Access: runs as shown on the sketch; a second/new access would possibly be possible, but would be associated with significant costs and must not affect any of the existing trees.

I’m linking a current floor plan discussion (don’t you even read in parallel what concerns your fellow participants have?)
https://www.hausbau-forum.de/threads/neubau-doppelhaus-155qm-ausrichtung-grundriss-dementsprechend.48000/

Also here, interesting regarding plot orientation
https://www.hausbau-forum.de/threads/hausplatzierung-schmales-langes-grundstueck.47981/

Apart from both discussions, I would probably place both carports close together and in any case see no disadvantage for you as you describe it.
Is the orientation north-facing?

To be honest, I find the "northern" property with its orientation to be clearly more attractive in practice. The colleague in the south gets blasted by the sun all day long. You in the north also have a great garden facing east (morning sun), and when the sun moves to the south, the east terrace also becomes a south terrace because the sun still shines fully on it. Essentially a southeast garden. If the terrace turns north around the corner, you are either sitting on the east side in the afternoon/evening in the shade or on the north side in the sun. Good room layout and you will find a nice bright home.

P.S. you can simulate the sun path online with the planned house. That usually helps to get a good feeling.

Maybe you could shift the current driveway a bit, then it could look like this

How do you assess the situation

I lack facts. Show me the context (cadastral map / aerial photo) diagonal approximately 100 meters. The drawing only shows the tip of the iceberg. Check out and https://www.hausbau-forum.de/threads/grundstueck-real-teilen-aber-beide-das-gleiche-baurecht-haben.36544/