Unknown requirements for border garage

Hello everyone,
my "main thread" is this one:

https://www.hausbau-forum.de/threads/grundrissentwurf-efh-hanglage.37183/page-9#post-498594

with our planned house, for which we recently submitted a preliminary request to the building authority.
Unfortunately, the house extends quite a bit beyond the building window (see screenshot), but to the south, which is adjacent to a green strip that is not allowed to be built on.
Therefore, we thought it might be approved.
This has now been denied by the employee; a minor exceedance might be okay, but this one is too substantial.
So we will have to move the garage along with the house 2.5 m to the north, to the border with the neighbor.

Besides the fact that as a border garage the maximum side view area of 25 sqm applies, the employee said that the basement under the garage may now only protrude a maximum of 1 m above the ground because the basement is connected to the house by a door and is therefore considered an outbuilding.
If there was no connection, this regulation would not apply.
(Supposedly to protect the neighbor, but the door status of our basement shouldn't matter to him, right?!)

Does anyone know this regulation, especially the 1 m rule?!
Our architect (same district as the building plot; has even planned several houses in this new development area) said he has been working for 29 years and has never heard of it.

We are building in Baden-Württemberg.

Just to add:
The light green strip still belongs to our property as a so-called private green area, which is not allowed to be built on.
Only the dark green is the adjacent public biotope area.

Thanks in advance!

Why are you starting a new thread here?

Here is the link to the old thread:



My suggestion for the placement on the plot wouldn't have that problem. Is a CP on the street not allowed?

The building volume in the development plan is about 1 m above the building boundary, so planning it 2 m above right away is a bit daring. Especially since the balcony also extends 2.5 m beyond the building boundary.

Putting the garage on the boundary in my opinion only helps to set the house including garage 50 cm lower. Then you can also comply with the 25m2.

I measured it again, maybe 18 cm lower and the house including garage on the building boundary in the west is already enough.

(In you can see the elevation points)

Unfortunately, the house extends quite a bit beyond the building window (see screenshot),

Even worse is that I missed that: I had mistaken the property boundary in your drawing for the building window boundary and was already wondering why you would have "wasted" the tip of the building window. Maybe the idea of shifting will now lead to a revival of my proposal to follow the slope of the building window boundary on the gable side :)

Apart from the fact that the maximum side view area of 25 sqm now applies as the limit for the boundary garage, the employee said that the cellar under the garage may only protrude a maximum of 1 meter above ground, since the cellar is connected to the house by a door and is therefore considered an outbuilding.
If there were no connection, this requirement would not apply.
(Supposedly to protect the neighbor, but the cellar’s door status shouldn’t matter to him, right?!)

These are just the regulations. I always say that the knee wall height regulations are unnecessary because the neighbor is already protected by the eaves height, and it shouldn’t matter to him how far below it the ceiling is. I will send you privately where I discussed your boundary garage in the "Grün" thread. Unfortunately, "our" expert has quit there.

My suggestion for the placement on the plot would not have that problem. Isn’t a CP by the street allowed?

Your suggestion was this one here: and I don’t recall having seen or read a separate Ca/Cp building window in the development plan.

Placing the garage on the boundary only helps, in my opinion, to set the house including the garage 50 cm deeper. Then you can also comply with the 25 m².

I had proposed the house at 460.00 and the garage at 459.70. To comply with the wall area, I would rather shorten the garage to 6 m in front of the car closer to the boundary (since the bicycle spots are in front of the house-nearer car) than lower it.

Thank you for your thoughts and efforts!

However, we only want to change the essentials, not discuss completely new floor plans, etc.
According to our architect, a carport is treated the same in terms of area as a garage, so that doesn’t change much for us.

, I asked the question here in the building law forum because I have a specific question about building law.
Namely, if anyone is familiar with this 1-meter rule or if it applies here.
Because it depends on that whether we can have an internal connecting door between the basement and the house or not.
I also linked my original thread in my initial post.

To comply with the wall area, I would rather shorten the garage in front of the boundary-closer car to 6 m (the bike spaces are in front of the car closer to the house), than make it deeper.

That is exactly what the architect did (or rather shortened it to 5.50 m).

What exactly is the building authority objecting to? The corner of the house outside the building window or the corner of the balcony above the biotope? Do the light well/courtyard and the entrance canopy in the west have to be within the building window, or could the house really be shifted to the west? And would it be possible to only lower the garage (not the entire house)? Perhaps you can make progress with a combination of these measures.

Otherwise, seal off the cellar door with drywall, and if there is an awkward attempt to install a wine rack there later, suddenly there will be a hole ;)