ᐅ Extending walls above the roof line!?

Created on: 19 Sep 2016 11:20
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bauherr85
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 19:31
bauherr85 schrieb:
Otherwise, my neighbor wouldn’t have been allowed to build his house as it stands now.

In every residential area, there are houses that violate the development plan but are still not demolished. In such cases, a fine is simply paid.
Jochen10419 Sep 2016 20:16
bauherr85 schrieb:
So, with a standard shed roof, it is definitely the short wall. Otherwise, my neighbor wouldn’t have been allowed to build his house as it stands now.

No, at least in the development plan you quoted, it says something different:

The reference point is always the natural ground level at the valley-side edge of the house up to the intersection of the exterior wall with the roof covering, measured on the eaves side.

So the side is chosen where the natural ground level is lowest.
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bauherr85
19 Sep 2016 20:47
@Jochen104
You misunderstand me. The plot is completely flat. Everything has been filled level to zero, with no slope or anything similar. The house there has a single-pitch roof sloping to one side. The shortest wall height is 6 m (20 feet), the tallest wall height is 9 m (30 feet):

2D floor plan with rectangular room and sloped roof
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bauherr85
19 Sep 2016 20:50
What do you think about this?
@Alex85
@Jochen104

Model of a modern, multi-story building with black glass surfaces and solar panels.
Jochen10419 Sep 2016 20:51
No, I do understand you correctly. Has your surveyor already created an elevation profile? Or why are you so sure? If the “wrong” side is even just 1cm (0.4 inches) lower, you’re out of luck.
That’s how I would interpret your development plan.

But in case of doubt, your architect should clarify this with the building authority (building permit / planning permission office).
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bauherr85
19 Sep 2016 21:00
What do you mean by 1cm (0.4 inches) lower? The short side of the shed roof can be up to 7.5m (24.6 feet) high. In this case, it is only 6m (19.7 feet) high, and the total height may be up to 10m (32.8 feet), while here it only reached 9m (29.5 feet).