ᐅ Extending walls above the roof line!?

Created on: 19 Sep 2016 11:20
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bauherr85
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bauherr85
19 Sep 2016 11:20
Hello everyone,

My partner and I are currently starting to plan our house, which is why I joined this forum. We have purchased a plot in a new development area. However, the zoning plan does not allow flat roofs, even though that is our preferred design. All attempts to convince the building authority and the municipal council have failed. The zoning plan permits all roof types with a pitch between 15° and 45°. The wall heights measured from the base to the eaves are 5.5 m (18 feet) for gable and hip roofs, and 7.5 m (25 feet) for shed roofs. To me, this seems somewhat illogical. Since the plot is almost flat, with a 5.5 m (18 feet) wall height, it’s not possible to have two full stories without sloping ceilings. Ideally, I don’t want the roof to be visible from the outside. With a shed roof, two full stories are easily possible because of the 7.5 m (25 feet) wall height.

My question is:
What do you think about planning a staggered shed roof with a 15° pitch and a wall height up to the eaves of 6 m (20 feet) — allowing for two full stories — and then extending the exterior wall up to 7.5 m (25 feet)? This way, from the outside, it would visually look like a flat roof building, but inside there would be a shed roof, visible only from above. Do you think it would be possible to get such a design approved? Is it allowed to extend the walls beyond the eaves?

Thank you very much for your feedback.

Best regards,
bauherr85
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Knallkörper
19 Sep 2016 14:34
With an average house width and a roof pitch of 15°, the height difference from one eave to the other is between 2 and 3 meters (6.5 and 10 feet). Such a tall, unstructured "extension" above the regular walls really looks unusual. And: The eave point is defined as the intersection between the vertical exterior surface and the roof covering. I think you might be overcomplicating things there.
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bauherr85
19 Sep 2016 15:18
Thank you for the feedback.
This is roughly what I meant:

Three-dimensional house sketch with roof and 15° pitch


Small image showing the number 15° with a stylized house symbol and angle indicator.


3D floor plan sketch of a building with a sloped roof and 15° pitch
Jochen10419 Sep 2016 15:34
I definitely would not like that.
In the upper part of the house, you no longer have any windows. It looks like a concrete block.

Additionally, you also have to consider the costs for internal drainage, the sealing of the roof to the walls, and so on.
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Tom1607
19 Sep 2016 15:35
That will be a nice swimming pool up there. I think you’ll have significant issues with waterproofing. And I doubt the local authorities will easily approve it.

Why don’t you try a shed roof? The local authorities already have that on the plans anyway, so you could try to persuade them to accept a flatter design. I have a shed roof with a 6-degree pitch (about 10%), which is almost like a flat roof. You would just need to see if the local authorities are willing to approve a shed roof (which is generally permitted) with a lower slope.
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Alex85
19 Sep 2016 16:03
The drawing is absolutely amazing. Would you want to live in something like that?!

The reason why municipalities specify roof types is to create a uniform appearance within the neighborhood, for example. So, enclosing a shed roof like that is probably not what the designer intended.

Someone has to say it, and now it’s me: it’s not a smart idea to buy a plot of land where the desired building shape isn’t even allowed under the building permit / planning permission. SCNR *duckandcover*