ᐅ Planning a Two-Story Single-Family House with a Minimum Eave Height of 8.0 m?

Hello everyone,

I want to build a detached single-family house and am interested in a plot in northern Baden-Württemberg.
The development plan for this area requires a minimum eaves height of 8.0 m (26 feet) above ground level (allowing up to three full stories), as the city originally intended to have a multi-family building here when the plan was made.

My issue is how to reconcile the minimum eaves height requirement of 8.0 m (26 feet) with a standard single-family house limited to a maximum of two full stories (our planning criterion).
If we abandoned our self-imposed limit of two stories, we could, for example, choose a shed roof with an elevated kneewall for an attic story (according to the development plan, the eaves height refers to the lower part of the shed roof). However, construction costs for 2.5 stories would likely be significantly higher than for two stories (additional staircase, utilities, possibly reinforced ceiling), and we actually do not need the extra half story.

Another option could be building a mostly above-ground basement to gain height. But the disadvantage would be that the living room and possibly the terrace would not be at garden level but above it. Also, such a basement would have to be waterproofed due to the very high groundwater level, which would certainly be expensive (more windows, etc.).

Am I missing something?
Does anyone see another possibility to achieve the 8.0 m (26 feet) eaves height?

Thank you very much and best regards,
Brasilianer