Semi-detached house in building area 8.5m x 15m (WxD)

Thank you for your draft!

Oh!

It's simply a top-10 metropolitan area, although not directly in the highly dense million-city. There, the standard land values are well into four figures – occasionally even starting with a 2.
In this area, values only become distinctly triple-digit if you become completely dependent on a car or move to areas with questionable schools and neighbors.

I have another suggestion based on mine: the southern living unit gets the basement at ground-floor level and pulls the rooms including the light well into the slope there.

How far? At 15 meters depth, you are already about 2 meters underground. And garages are actually supposed to be in the rear area.
By the way, the neighbor has dug out the slope all around the house. I don't quite understand the motivation yet. That must have cost a fortune. At least if he also disposed of the spoil. However, his garden is overall somewhat higher. Is it allowed to reuse spoil on your own property in this way? If yes, that might also be an idea for us. Then we get closer to your suggestion.

If you can pay for that, then the 3rd VG is also an option.

By now, I don’t believe that anymore. And the reason is one I hadn’t considered despite years of reading. With the 3rd VG, the house slips from building class 1 or 2 into building class 4. And that entails tremendous consequences regarding fire protection, sound insulation, parking spaces, accessibility, etc... Surprisingly, I can’t recall any discussion where someone really grappled with this issue. And a quick forum search didn’t bring up anything either.

with the 3rd upper floor, the house moves from building class 1 or 2 to building class 4.

Sorry, that was a bit simplified. The 3rd upper floor would have its floor surface only just 5 meters above the average natural ground level (if you place the floor slab at street level). However, the 3rd upper floor would only really contribute to an increase in living space if there were also a developed attic above it. And that would then have the floor surface just over 7 meters above the ground – thus building class 4.

My current home office measures 7m². And that is worth its weight in gold compared to the work corner in the living room in the last apartment a few years ago. And definitely more than 7 additional square meters in the living room. And yes: Everything I need for my work fits in there.

Seven square meters as space for a table and a chair to hang your jacket on is more than sufficient, almost regal as a cubicle for preparing the tax return exam. But that is only twenty cubic meters, which with a full-time workspace and a controlled residential ventilation system can already mean an increased idle speed. So permanently tilted window or non-smoking balcony.

Good morning forum members,

there are a few news. I had an initial consultation with an architect. Although she will most likely not be able to plan the new building because she is not accepting any new planning assignments this year, I sought the conversation anyway because she is something like the top dog here in the area of single-family houses, two-family houses, and 3-family houses.

Some surprises have emerged that show that even very comprehensive internet research and years of reading house building forums have their limits. I was particularly surprised (to my disadvantage) by:

[*]The municipality opposes the parking space regulation NRW (there is no separate statute) in points that are precisely formulated and actually allow no interpretation, which will increase the parking space requirement on my property by 1 parking space in most constellations.
[*]The (favorable for me) height information in TIM NRW has no building law relevance. Also, no one, not even the municipal administration, has any relevant height information. Only the use of a publicly appointed surveyor results in an official site plan, from which the terrain profile can also be seen. I have already spoken with the surveyor: The rather steep rise from the street indicated in TIM cannot be found on the property, since this property, like that of both neighbors, has been excavated to street level over approximately 20 meters depth and the full width. If a natural terrain is no longer recognizable, then the terrain found is surveyed and becomes decisive.
[*]The building authority generally does not offer oral consultations. One can only submit a building inquiry, which has a processing time of about 3 months. Since the development plan contains some vague formulations, there is a certain risk involved here.
[*]Fire protection for GK1 and 2 (single-family house and two-family house) must include a rescue concept without using an aerial ladder. This means that the second escape route generally requires that from every floor a window, balcony, or flat roof can be reached under which the fire brigade can place an extension ladder. This would not be possible with the current idea of the semi-detached houses located one behind the other. Does anyone know where I can read more about this?
[*]A building application here takes about 10-12 months for approval. Of that, alone 3-4 months go to the water law approval, which is processed by the district.

Some things are very sobering. Do you have any own experiences with the above points?

Greetings, Gregor

If a natural terrain is no longer recognizable, then the terrain found would be surveyed and decisive.

But that is not "to your detriment".

Since the development plan contains some vague formulations, a certain risk is given here.

And in that there are rather opportunities to use uncertainties in favor of the applicant.

That would not be possible with the current idea of the terraced semi-detached houses standing one behind the other.

One more argument for my proposal of the classic multi-story two-family house.

I had an initial consultation with an architect. Although she will most likely not be able to plan the new building because she is not accepting any new planning orders this year, I still sought the conversation because she is something like the top dog in the area of single-family houses, two-family houses, and three-family houses here in town.

That is normal (and not different for me either) that the calendar is already closed in June. Do you at least get appointments with her for Module A this year?