ᐅ Does the eave height regulation also apply to bay windows?

Created on: 16 Mar 2019 14:04
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Matze999
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Matze999
16 Mar 2019 14:04
Hello everyone,

In our development plan (NRW, single-story construction), it is specified that secondary building elements, bay windows, and conservatories are exempt from the specified roof pitches.

The eave height is set at 4.50 meters (14.8 feet). However, the development plan does not mention whether, for example, bay windows are exempt from the eave height restriction. Although it doesn’t really make sense to build a bay window in the attic with an eave height of only 4.5 meters (14.8 feet)...

Can you help clarify how this is usually handled when nothing is stated about it in the development plan?
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Escroda
16 Mar 2019 16:18
Since your first post in this forum was somewhat unmotivated and left unfinished, here are just a few remarks to start with:
- There are no bay windows in the attic. There are dormers, cross-gables, and loggias (not an exhaustive list).
- Retelling fragments from a zoning plan does not lead to useful answers.
- Early personal detailed planning often leads to dead ends during architect consultations.

If you own a plot within the area covered by a development plan (building permit / planning permission) and want to build, find a designer to whom you can explain your ideas. Then they will explain to you which parts are not feasible and why.
11ant16 Mar 2019 19:51
Escroda schrieb:
- Early detailed planning on your own leads to dead ends in discussions with architects

*I would frame this and ideally pin it up* (because it really belongs in every homeowner’s scrapbook)
Escroda schrieb:
- There are no bay windows in the attic. There are dormers, cross gables, and loggias

Of course, bay windows do exist in attics, although they are rather rare on the eaves side.
Matze999 schrieb:
However, the development plan doesn’t mention whether bay windows, for example, are exempt from the eaves height.

Actually, it does. Any exceptions not explicitly listed do not apply.
Matze999 schrieb:
that subordinate elements, bay windows, and conservatories are exempt from the specified roof pitches.

That has nothing to do with the eaves height. It simply means that, for example, you could build a flat-roofed bay window even if a pitched roof is required for the house. In that case, the wall height would replace the eaves height.

Maybe you could share more than just bits and pieces of your thought process with us.
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Matze999
16 Mar 2019 21:11
Hello,

first of all, thank you for the replies. I have attached our zoning plan.

The general goal is to slightly enlarge the ground floor by adding a bay window and then extend this bay on the upper floor to a height of about 6 m (20 feet), covering it with a flat roof with a slight pitch (similar to the attached picture). In this context, I wondered whether such a bay window is exempt from the eaves height.
11ant schrieb:

But it is stated there. Any exceptions that are not explicitly listed do not exist.

From your answer, I understand that this is not possible since the zoning plan does not mention any exceptions to the eaves height, right?

Modern white single-family house facade with large windows and entrance door
11ant16 Mar 2019 21:46
Matze999 schrieb:
The development plan can be accessed at the following link:

Links are not preferred here; it is better to provide the plan by naming the municipality, name, and number, so people can find it themselves.
Matze999 schrieb:
If I understand your answer correctly, it is not possible because the development plan does not allow any exceptions to the eaves height, right?

Correct – the structure shown in the picture (rightly, a bay window) definitely does not comply with this eaves height, or it would only be allowed on the ground floor or up to the knee wall (where it would probably be pointless).
https://www.instagram.com/11antgmxde/
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Matze999
16 Mar 2019 22:22
What about roof extensions (see attached photo)? Does the eaves height also need to be considered there, since roof extensions are not explicitly excluded in the development plan?

Modern wooden-clad dormer with large window on sloped tiled roof.