ᐅ Unclear exact building size within the building envelope

Created on: 3 Nov 2024 22:53
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DaioDollaz
Hello everyone, a perhaps simple question, since I haven’t found any previous discussion on this topic:

We are currently in the process of buying a plot of land in an established residential area. We plan to build an extension attached to an existing semi-detached house. There is a development plan from 1991 that is still valid. However, I cannot find any dimensions in the plan indicating how large the house can be. It specifies a floor area ratio of 210 sqm (2,260 sq ft) and a site coverage ratio of 105 sqm (1,130 sq ft), but nothing else.

As a layperson, it’s unclear to me how to derive any specific measurements (like 9x10, 9x9, or 11x9 meters) from this information. One option might be to submit a preliminary building inquiry, but we would prefer not to do that at the moment. Are there any other ways to determine the size of the building envelope?

Good luck
Y
ypg
4 Nov 2024 23:12
ypg schrieb:

Plot 2019 West

Sorry, I was referring to 2017/2 and got confused between East and West. My mistake.
I’ll take a moment to sort myself out!
Y
ypg
4 Nov 2024 23:46
Again, the 2019 West would be this one (almost square with the vertical row of trees).

Architectural plan of a building plot with structures, walls, and terrain orientation.

According to my research, there is a house on it with an eastern extension, porch or something similar, so it’s not suitable for a semi-detached house.
Based on my measurements, the entire plot with existing buildings is about 23 x 21 meters (75 x 69 feet). However, this was measured on an iPad and is therefore not reliable, especially since the other measurements only indicate 10 or 20 meters (33 or 66 feet).
So it can’t be this one because of the existing buildings. It’s actually too new for demolition.
There is still free land for semi-detached houses one street level higher, at least that was the case two years ago according to Google Maps.
Either you check again which plot it actually is, or you measure it yourself and calculate whether it matches the 105/210 specification.
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DaioDollaz
5 Nov 2024 07:50
nordanney schrieb:

You can see the line going around the "house." Definition:
1730756579611.png

This allows you to build a semi-detached house matching the neighbor’s. Not larger, but smaller is possible.

Although I think you mean plot 2016. At least according to the aerial photo/maps, I wouldn’t know where else you’d want to extend.

You can also check the Geoportal website and enter your plot (2012/19?). Without more information, though, it would just be a twin of house number 1/4.
Oh man, that’s what happens when you try to do something quickly late at night... Of course, I meant plot 2012/19. This used to be a large plot but was divided into two equal plots of 263 square meters (2,830 sq ft) each in 1998. The east side of the plot is now its own parcel and already developed (house number 1/4).

The area was calculated based on the plot size and the factors mentioned.

So, do I understand you correctly that I can measure this with the iPad and then know how big I am allowed to build? I somehow thought there were clearer specifications in the development plan. As long as everything is the same size as the neighbor’s, I don’t see a problem. But if the neighbor hasn’t fully used their building envelope, does that mean I can’t either, or how does that usually work as long as it’s within the building envelope?

Don’t get me wrong, I’ve done all of this, but I thought it would be more clearly defined.
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nordanney
5 Nov 2024 08:07
nordanney schrieb:

You are allowed to build a semi-detached house identical to your neighbor’s. Not larger, but smaller would be possible.
DaioDollaz schrieb:

As long as everything is the same size as the neighbor’s, I don’t see a problem either. But if they haven’t fully used their building envelope, would I still not be allowed to exceed it, or how is this usually handled as long as it’s within the building envelope?
Roughly speaking, everything is fully utilized, so my initial answer still applies.
H
hanghaus2023
5 Nov 2024 14:34
The plan states that only single-family houses are allowed. Could you please mark your plot on the development plan or provide an excerpt from the land register?
11ant5 Nov 2024 15:48
DaioDollaz schrieb:

Of course, the plot 2012/19 is meant. It used to be a large plot but was divided in 1998 into two equally sized plots of 263 sqm (2,830 sq ft) each. The east side of the plot is now a separate parcel and already developed (house number 1/4).
The area calculation was based on the plot size and the factors mentioned.

2012 does not have a /19; I assume the gap ("2019 West" would not be an inappropriate name) between Ludwigsburger Straße 10/1 and Hartwaldstraße 1/4 is meant:
Satellite image of a residential neighborhood with streets; a yellow question mark marks a plot.

https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/