Thank you very much for the many responses; I can hardly keep up with reacting. Therefore, here are some summarized feedbacks on frequently mentioned points.
Parking spaces in front of the garage are impractical / not used, etc.:
We have 1 car and 2 parking spaces in the garage and in front of it. There will never be a need to move cars around. We are not car enthusiasts! We want to stick with one car. We want to spend just under 800,000 EUR on a house and have a 10-year-old Seat Leon. We are not car people. That will never become reality for us.
In 20 years, this could look very different:
Futures research shows that in 20 years, people will probably hardly own their own cars anymore. Our children will probably never get a driver's license because cars will be self-driving. In an app, you will then press a button, and the car will come out of a hangar or from somewhere else and stop in front of your house. After use, it will disappear again to the next user. The future is mobility as a service, not everyone owning their own car. Futurists largely agree on this. So why should I build 7 parking spaces for a scenario that most likely will never happen? That is old-fashioned and focused on the past.
200m² is large:
That’s true. We are both employed and work nearly 100% of the time from home office. Therefore, we need 2 large office rooms, so an additional approx. 35m² is required for the home office. We have also planned a second children's room as a buffer. Otherwise, I would not describe our planned house as unusual (2 children's rooms, 1 living/dining/kitchen area, 1 bedroom, 2 offices). I have also posted the floor plan in this subforum for floor plan planning; I will try tonight to see if I can somehow paste it here.
Chances of success in the legal process:
A few months ago, I talked to a lawyer specialized in building law about this. His statement was that establishing parking space requirements must allow reasonable discretion; otherwise, it would be per se invalid. This is done in the current statute by allowing exemption permits upon application. So if we apply for an exemption permit and it is rejected, according to the lawyer, this would not be reasonable discretion, since in the specific situation, 7 parking spaces are not reasonable (the real need is based on people and cars and not on the living area, which is only a proxy). Therefore, the lawyer was convinced that we would very likely be successful legally. However, we would have to bear the costs ourselves (although we have legal expenses insurance, it does not cover this). I am therefore very surprised that you all see this so negatively here because I heard something quite different from the lawyer.
Site plan:
I can provide it tonight. It is a corner plot. The garage is adjacent to neighboring development. The garage is 6m long and 7.5m wide and 6m away from the street. Thus, the driveway in front of the garage is also 6m x 7.5m. The house is 5m away from the street. There is a hedge at the property boundary, so according to current planning, there is about 4m distance between the front door and the hedge.
General parking situation:
I currently live in a large city and know the congested streets very well; for my current place of residence, I would wish for something like this too. But on the property, that is definitely not an issue. At the property boundary alone, there are 5 public parking spaces, of which at least 4 are almost always free, usually all! There are also plenty of free public parking spaces on other properties. The surrounding houses all also have double garages and 2 parking spaces in front. Even if everyone parked 2 extra cars on the street, there would still be enough space. This area is simply very spacious, and the plots are all about 1000m² in size.
Planning progress:
Replanning is possible without extra costs. However, we want to build what we really need and want, not any “makeshift solutions.” Therefore, my approach is to see how we can best get what we want through. We are moving to the countryside because we want nature and not to pave everything over.