ᐅ Building with a knee wall height of 50 cm (approximately 20 inches)?

Created on: 21 Apr 2024 13:47
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MelW2024
Hello.

We are currently negotiating for our "dream plot." Great location, but unfortunately quite expensive.
Now we have taken a close look at the zoning plan and found out that a knee wall of 50cm (20 inches) is required.
I find that quite frustrating and am almost of the opinion that we should continue looking elsewhere. (which is unfortunately not so easy in this area)
My husband dismisses it as "it's not that bad" and "if necessary, we’ll build a bungalow with a basement."
The zoning plan dates back to 1970. We have submitted an inquiry to the city regarding changes, but they are not very forthcoming with information.

Now my questions:
Does anyone have experience with changes to zoning plans (building permits/planning permission)?
Has anyone built with such a low knee wall and can share their experience?

Thanks and best regards, Mel
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MelW2024
21 Apr 2024 17:58
By the way, the roof must be a gable roof with a 25-30% pitch (14-17 degrees)...
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motorradsilke
21 Apr 2024 18:08
MelW2024 schrieb:

Thanks for your replies!
My parents built with knee walls of 75cm (30 inches), and I always thought it was awkward—and my parents did too.
I feel that if you’re spending so much money and hopefully building only once in your life, it should be (almost) exactly how you want it...
On the other hand, there are hardly any plots available, and the location would be really good.
By the way, we would probably have to build with a basement anyway, since the plot is slightly on a slope. The neighboring houses around have all been built with deep basements.
Best regards

Well, then the question is settled. And if you plan it cleverly, you can also get enough natural light into the basement for the rooms that need it.
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hanghaus2023
21 Apr 2024 18:54
On a slope, this should generally work with a below-ground level or daylight basement. What exactly do you mean by slightly sloped? It would be best to share the site plan, ideally with contour lines, or photos of the plot.

The exceptions accepted by the building authority or planning permission office are best seen by looking at nearby properties.
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ypg
21 Apr 2024 19:25
MelW2024 schrieb:

By the way, we would probably build with a basement anyway, since the plot is slightly on a slope.
How many floors are allowed? With a slope, I would also recommend building a ground floor with a lower ground floor, what builders sometimes call a semi-buried townhouse. Bury the utility rooms and place the children's rooms on the side with the open slope.
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AlterFalter
22 Apr 2024 13:42
Hello MelW2024,

we have the same situation here. An old development plan from the 1970s and a knee wall height of only up to 50cm (20 inches). Gable roof.

I was about to give up on the plot because of this, but the development plan also states that two full floors are allowed. From a certain knee wall height, one floor is considered a full floor. We are planning a knee wall height of 2 meters (6.5 feet), which we wanted anyway, and that solves the problem. We asked the responsible building authority about the current definition of a full floor that applies to this building area. Of course, this depends on the federal state.

Inquiries with the municipality and the competent district office were very positive. Both officers were very understanding (“nobody builds like that anymore nowadays”) and had already suggested that a change request during the building permit / planning permission application would not be a problem (that was our plan B).

How about you, how many full floors are allowed?
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MelW2024
22 Apr 2024 18:01
Thanks for all your responses! I really didn’t expect this.
hanghaus2023 schrieb:

On a slope, it should generally work with a basement. What do you mean by slight slope? It’s best to show the site plan with contour lines or photos of the property.

You can see which exceptions the building authority accepts by looking at the surrounding area.

The property has a slope of about 10%. Unfortunately, there are no exceptions on this street. The houses were all built in the 1980s and have a knee wall of 50cm (20 inches). “Our” lot is the only one that hasn’t been developed.
ypg schrieb:

How many floors are allowed? For a slope, I would also recommend building a ground floor with a basement—in architectural terms, practically a half-buried townhouse. Put the secondary rooms underground and the children’s bedrooms on the open slope side.

Unfortunately, only one full story plus the 50cm (20 inches) knee wall are allowed. Two full floors are not permitted!