City villa with annex in Schleswig-Holstein

Hello,
we are planning to build a townhouse in Schleswig-Holstein. However, the development plan only allows a single-story construction (otherwise, only the building height of about 10m is defined). Now, the state building code states:

"A top floor set back from at least one exterior wall of the building or a floor with at least one sloped roof surface is a full floor if it has a height of at least 2.30 m over at least three quarters of the floor area of the floor below."

If we now enlarge the ground floor so that the upper floor has less than 75% of the area of the ground floor, can we then build a townhouse that is considered single-story and has a normal ceiling height of 2.5m?

Thank you very much!

That is exactly what one of our neighbors in SH is doing. Only single-story construction is allowed here, he is building a townhouse. Such a thing can be solved with a gallery, balconies, or a set-back upper floor.

Due to the single-story structure, we built an extension with a roof terrace on top. This extension protrudes around the corner and enlarges the living room area. Our neighbors solved it with a staggered floor, others with a shed roof. You have many options there.

I am quite familiar with typical SH B plans. If only one story is really allowed, then only bungalows would be possible. Or 1.5 stories? Then your version might work. Has anything been said about the roof? It would be typical here to exclude flat roofs, as well as shed roofs, require hip, gable, or pyramid roofs, and demand roof slopes of 25 degrees or more. However, that would make your project more difficult. Often, the floor area ratio also makes building these coffee grinders difficult. Check the text carefully. K.

If only one storey is really allowed, then only bungalows would be possible.

No, only one full storey.

Or 1.5 storeys? D

Those do not officially or legally exist!

You're right. In our WA I plus 9.60 height, max. 1.5 storeys with 9.6 m height, flat roof prohibited. Minimum roof pitch 25 degrees. Clay tiles or concrete roof tiles red brown anthracite, not glazed.