ᐅ Semi-detached house: Key considerations. Dividing the plot?

Hello dear house building community!
We are planning to build a semi-detached house soon, which requires some creativity due to limited space but is definitely feasible.
The basic conditions are as follows, and I would really appreciate some opinions:

• The plot is located in the city, surrounded by other residential houses (so no fields, forests, or similar)
• Plot size is 27 by 16.60 meters (89 by 54.5 feet)
• The 27 meters (89 feet) run north-south, the 16.60 meters (54.5 feet) east-west
• The house is set back from the street (backyard development); on the north side, there is a shared driveway for us and our neighbor
• The house dimensions are planned to be 12 by 12 meters (39 by 39 feet)
• There are setback requirements of three meters (10 feet) on each side. We have agreed with our neighbor on the west side (who is also building) that he will give us two meters (6.5 feet) of his setback area. This means he keeps five meters (16.5 feet) distance to the property line, allowing us to build two meters (6.5 feet) closer to the boundary on that side, so we only have to maintain 1.30 meters (4.3 feet) instead of 3.30 meters (10.8 feet). On the east side, the distance remains 3.30 meters (10.8 feet). This allows us to have a 12-meter-wide (39 feet) house on a 16-meter-wide (52.5 feet) plot.
• A garage will be integrated into the house on the west side, and another garage will be built next to the house on the east side
• Now it gets a bit complicated: Due to the different distances to the property boundaries, the house is not centered on the plot. However, since both halves of the house are the same size, there is no problem with the living space so far.
• It is different with the garden. Due to the different setback areas, the west half would be 7.30 meters (24 feet) wide (6 meters house + 1.30 meters setback), while the east half would be 9.30 meters (30.5 feet) wide (6 meters house plus 3.30 meters setback).
• This would result in two gardens of different sizes, which we would like to avoid.

Question: Is it possible to divide the plot so that the boundary line is not straight? That is, the house would still be divided in the middle, but the dividing line would shift one meter (3 feet) to the east afterward, thus splitting the gardens into two equal parts?

• I have also attached a rough plan to illustrate this better

I would really appreciate it if you could give me feedback (despite the complex explanation) on whether such a design is legally possible and generally sensible.
Many best regards,
yours, hans3

Is it possible to build the second garage on the property boundary in the upper left corner? Or at least a parking space?

Alternatively: If the communal area marked in pink on the left side is assigned to the "rear" property, that property would become larger and the size proportions would become more balanced. Additionally, the rear house could then be moved further north.

Hello Hans,

First of all, welcome to the forum!

In my opinion, it should not be a problem to divide the plot in a non-linear way.

However, you should check with the responsible building authority about the window areas on the eastern side of the house. I vaguely recall that with such a small setback distance (1 m) (3 feet), it might not be allowed to install windows in that one-meter-wide section of the wall.

You might also need to ensure that the required setback area is maintained at this "corner."

Best regards,

Dirk

Hello ypg,
thank you for your quick response. The pink area is a shared space with our neighbor on the west side; there is also a plot that uses this driveway. However, I did not mark this plot. Therefore, this area must definitely remain free.
Moving it further north is unfortunately not possible due to restrictions.

Hi Dirk,
thank you for your reply!
So you mean that the eastern house should not have windows on the far western side? In other words, if the house is 6 meters (20 feet) wide, only the eastern 5 meters (16.5 feet) can have glazing because we do not plan a straight division? Did I understand you correctly?
That wouldn’t be a problem at all, since the shared wall is located there anyway, where no window is planned (I don’t want to look into the neighbor’s living room ).

Hello Hans,

Exactly, I think you might not be allowed to install windows on the westernmost meter of the south-facing wall of the eastern house (soon we will have covered all the cardinal directions... ) due to the insufficient setback from the property line.

With direct boundary construction, this is the case; at least the window must not be transparent (alternatives are fixed frosted glass or glass blocks).

Best regards,

Dirk

Best regards,

Dirk