ᐅ Optimal finished floor height relative to the street level

Great solution 😀 I really can’t find anything about the elevation reference point or height specifications in the development plan.

The architect or planner should know this, otherwise you can find out by calling the building authority (building permit / planning permission office).

This is the plan, the driveway will be at the top of the image.

According to the planner, the reference point is the highest point in the middle of the street. What would be a reasonable elevation to set here relative to the reference point?

So, what’s missing is the point from which the ridge height (OK First) is calculated! Is it the same reference point as for the finished floor level (OK Fertigfußboden), or is it calculated starting from the finished floor level (in which case you would effectively add the entire floor structure of the ground floor as extra building height! Both options and much more are possible. The reference point for the finished floor level is already clear (approximately 50cm (20 inches) above the finished street level/manhole cover).

In our case, the development plan (B-Plan) states this in writing:
"Ridge Height
The ridge height (FH) is determined by the difference between the upper edge of the ground floor slab and the upper edge of the ridge as the intersection line of the outer edges of the roof covering. For monopitch roofs, the ridge height corresponds to the intersection line of the higher rising masonry with the roof covering."

Find out this information, send details regarding the development plan, or ask the planner. I can’t think of anything more on this topic.

P.S. It took me three months after buying the plot to fully understand the applicable development plan 😳

So, I have now spoken with him.
We can actually go 50cm (20 inches) higher. He has now suggested using 9.82m (32.2 feet) from the center of the street to the driveway and raising it by 15cm (6 inches), making it 9.97m (32.7 feet).
This way, there won't be too much excavation or filling required. He doesn't see any problems with the height concerning heavy rain, and since the street in the north will be finished at 10.05 + 0.12 = 10.18m (33.1 feet), he considers it fine because there is enough slope and the curb will also be added.

It all sounds plausible. Now I’m wondering: I will definitely go with the additional 15cm (6 inches), but is it sensible to go even higher? Are there any advantages?

So far, this sounds pretty good to me. What do you think @[B]i_b_n_a_n?

It depends on the terrain. We raised the house almost as high as possible. Having 1-2 steps (or a ramp) into the house seems practical to me. The terrace can still be level with the finished floor height.

But we are also building a solid wood house. In that case, it is even more important to keep the "feet out of the dirt." In hindsight, we should have taken the last possible 10cm (4 inches) as well. However, we are already 40-50cm (16-20 inches) higher than all the other houses nearby (which is a conveniently located reference point regarding site access).

But earthworks also cost money, so building the house higher only to fill in and then retain it again (with expensive L-shaped retaining blocks) doesn’t make sense. I would discuss this in advance with the landscape contractor. Most architects don’t really care about this.