Floor plan of a new multi-family house with 3 residential units, living area approx. 350 m²

The source is the Din18012 for house connection rooms - I have also found it.

Here even simpler: TK in the house including bicycle room... then eventually the floor area ratio will also work out The carports are each 3.20 x 6.00, one parking space in front of the carport by the TK room. The yellow is a garbage box [ATTACH alt="Bildschirmfoto 2024-08-30 um 16.14.50.png"]87491[/ATTACH]

Because it’s about the basics.
You come with a draft where no parking spaces are drawn, but a double garage instead.
You come with a technical room that cannot be one.

Hello,

I understand your point of view and have provided the additional information. As mentioned, my problem mainly concerned the interior of the apartments, especially balcony and terrace. Therefore, these details were not included.

The technical room is sufficient in size. It provides enough space for a district heating station, a meter cabinet, and the water connection lines. Of course, bigger would be better, but since I have a financial intent here, I have to maximize the living areas and minimize utility spaces. Unfortunately, this is necessary.

Now, let's get to the facts:

The plot is 523 sqm in size with a site coverage index of 0.4. This means you are allowed to build just under 210 sqm.
Additionally, according to §19 paragraph 4 of the Federal Land Utilization Ordinance, unless otherwise stated in the development plan, the site coverage index may be exceeded by up to 50% for ancillary facilities.

Your house has approximately 180 sqm as a ground floor area (including terrace).

So you still have 30 sqm actual sqm left, plus 105 sqm (50% of 209 sqm), so a total of 135 sqm for driveways and parking spaces as well as other ancillary facilities (here a shed for tools, bicycles, and strollers).

Your plot is 19 meters wide. If you want to designate a parking space with 6 meters depth (6x3 m parking space corresponds to a parking space in a comfort design suitable for the house and apartment, let's disregard width for now), you need 7-8 meters in front of the house. Because you still have to get from the car parking space at the boundary to the house entrance on the property without leaving the property. And the bumper should not protrude onto the sidewalk. Moreover, you don’t cling to the base of the house, and barrier-free access for at least 1.5 parking spaces must be ensured.

Then you are already at 19 x 7 (the minimal version first) with 133 sqm. Then two parking spaces on the side add up to a total of 169 sqm.
And then there are sheds and paths to the shed as well: Shed floor area 2 x 6 sqm with one meter distance/access to the parking space makes approximately 151 sqm. That is already beyond the allowed limit.

Your drawn parking spaces: Ground floor (barrier-free) looks onto a parking space that cannot be barrier-free. It faces another vehicle. The sheds cover the windows of the ground floor apartment.

And yes: trapped parking spaces are only allowed under certain circumstances. Let's assume that half a parking space can also be a trapped parking space, your surface utilization far exceeds any reasonable measure. §19 paragraph 4 of the Federal Land Utilization Ordinance is already very lenient, but exceeding this area as well is probably not approvable.
In total, including the missing technical room where one can approach the technology: round storage -> new

As stated above, I have to optimize the areas. Particularly, the parking spaces must not exceed 5m in depth. The width is not the problem. Also, not the entire area in front of the house will be built on. In reality, 2-3 of the street front will remain unbuilt.
Therefore, one should rather assume 16*6 for the parking spaces including access paths = 96 sqm. Then there should actually be enough space left for sheds and two more parking spaces.

The question arises: does one have the claim for a comfort apartment to accommodate the four family bicycles plus another 8 bicycles in a 6 sqm shed?

It should be somewhat more. 9 sqm should be sufficient.

It depends on the parking space regulations of the municipality, so you should inquire exactly there whether this is possible.
Because as a rule, reserved parking spaces really don't work, at least not those that are mandatory.

Good point, I will clarify that specifically again.
For our current house, it was explicitly allowed in the development plan (area in front of the carport can be designated as a parking space). I cannot find any such wording in the current one. We will clarify it with the authority, it would be great if they accept it.

Both belong together. You can plan a great floor plan, which then, for example, makes no sense on the plot due to the orientation.

What do you understand by the site plan? The location of the building on the plot with the drawing of the ancillary facilities or the location of the plot within the development area?

What do you understand by the site plan? The location of the object on the property with the adjacent facilities drawn in, or the location of the property within the development area?

The former is already great, if the whole thing is then garnished with the surrounding buildings, perfect. Depending on the property, of course, with elevation data (which is not the case with you). Have you ever talked to the municipality about a parking space buyout? That would simplify the whole issue.