Floor plan of a multi-family house with 4 residential units

In itself a good suggestion, but somehow you have to overcome a height of 1.3m over a distance of 3.5m. And a slope of 40 degrees to the garages is structurally not possible at all. At most, you could barely build three garages if you still had the driveway with the first one. But even then you would have a 20% slope. That is really pushing the limit. The property is actually not big enough for that. And the garages would definitely create a big financial hole in the budget.

Because even though the house is 1.3m higher on this side of the property, with the maximum allowed slope of 20 degrees, you can just make it to the 3 garages.

Underground garages are not worthwhile here. Although only one ramp might need to be built against for a large underground garage, I do not see this as reasonable given the rather small apartments.

That may well be, and setting the house so much higher that the ground floor would almost already become a cramped upper floor will in turn cause new and different clearance areas, since the house is overall higher.

However, it may be possible to realize an external cellar access for bicycles somewhere.

The required number of parking spaces per apartment does not match the plot size IMHO; I would check from which apartment size / number of rooms 2 parking spaces are required. Possibly then build half of the apartments so small or only with 2 rooms, so that they fall below this threshold.

Plan B: build fewer apartments – but larger ones. Sure, you can squeeze four 3-room apartments with 70 sqm onto the plot – but I consider them cramped. Wonderful for a single person; already tight for a couple. For a 3-person household... that’s going to be fun.

The thing with the parking spaces is about right, and I don’t think it’s particularly many. Here’s a comparison with our parking space guideline:


In this case, that would mean for the planned 4 apartments: 4x2 + 1 = 9 parking spaces!
For a single-family house with a granny flat, that’s immediately 5 parking spaces if the apartment is over 50 sqm...

As far as I know, you can buy out one or two parking spaces, costing roughly €15,000 per waived parking space.

And my two cents: that’s a good thing! Sorry, but most households have at least 2 cars, and sometimes it really becomes unbearable how people park on the street. Delivery trucks (including post and parcel carriers—they are also in purely residential areas), snow removal vehicles, and emergency services suffer because of this. And I often get really annoyed here because people position themselves so that they can park as close as possible to their own front door but forget that, unfortunately, they live on a curve, and the person who now has to drive through the curve (on the opposite side because the car is parked on the side you should be driving on) has to do so blindly since the curve is not visible due to the high hedge of the other neighbor.

We also regulate access drives in the parking space statute, so I think the advice to study this in more detail is very wise and worth noting! Especially for multi-family houses, it is often (and rightly so here as well!) demanded that each parking space must be individually accessible, so no tandem parking! And the note about the turning radius is not something to just dismiss.
Where I am (also Bavaria, also west of Munich), it is also explicitly prescribed how far parking spaces have to be from the street. That makes sense too because if someone needs to quickly step out, for example, to close the garage, they shouldn’t block the entire street.

So don’t expect to be able to negotiate this down but rather recognize the purpose of this regulation for the common good.

A few brief comments on the floor plan proposals:
If I’m building this for myself and planning a few apartments around it as retirement security and income, then I design MY apartment the way I want it and how it fits my situation. What is important to me, what less so (bathroom with a tub, for example). Personally, it would be important to me to have a garden portion that is private. So not the balcony of a unit above over my garden, something separated from the other units, etc. Do I like to cook? Then the kitchen area in my apartment can be more generous than usual. Do I have a hobby for which a dedicated room would be good? Then I take that from the living area and allow myself that. Do I like it small and cozy? I stick to 70 sqm; would I prefer it spacious? Then I grant myself a few more square meters out of what’s possible! Do I want to live on two floors with a gallery? Go for it!
Forget symmetry. Build your apartment and see how you can arrange the other three units around it. They don’t have to be three equivalent apartments. It can be a one-room apartment for the weekly commuter who comes from God-knows-where and works in Munich during the week and is looking for an affordable apartment. Or the student or the older single person with a small pension who’s thrilled to get a small apartment. Then a slightly larger one for a well-off couple, happily retirees. If I remember correctly, tenants are not supposed to have children. So you can also consider how to design the apartments exactly to appeal to the clientele you want (e.g., walk-in showers for retirees, elevator in the building, etc.). Combined with a smaller two-room apartment for those who just finished studying and are starting to work (and for whom the apartment becomes too small when children come).
They don’t all have to be the same apartments, they have to be apartments that fit the clientele you want.
And your apartment has to suit you and may be a bit “quirky”!
And no walkthrough rooms (like at Sunshine: guest through the living room—NOGO!). That’s always bad.

As I said: move away from symmetry, create your dream apartment, and generate the other apartments around it. They can be totally different apartments for various needs.
So far, I find all the drafts boring ordinary fare, and I don’t see your personality, your apartment in them. Express yourself! You’re paying for it! You’ll rent out the rest anyway because of the location.

I think it was Katja or ypg who have been asking “what do you want?” for pages now and haven’t gotten an answer yet. Take it to heart!