Floor plan with restrictions for townhouse (mid-row house) for family.

Sleeping under living space is rather suboptimal.

Why? There is no garden anyway. It is basically a maisonette apartment over 3 floors. Makes sense in an inner-city building somehow.

Why? There is no garden anyway. It is basically a maisonette condominium over 3 floors. Makes some sense in such an inner-city building.

Because it reminds you of the noise from the neighbors above in apartment buildings? And footsteps in the stairwell passing by the bedroom? ;)

I would like a staircase that has a landing in the curves and is therefore easy to walk on.

First of all: landings stop the flow of walking and do not necessarily make a staircase easy to walk on. If you are young or quite fit and want to rush/slide down the stairs, then an uninterrupted walking flow is preferable. If you already have hip problems or other issues where you might need to stop, then choose a staircase with landings. Many builders mistakenly choose the simple landing staircase – it just looks better.

We planned the house according to the surroundings so that the ground floor becomes a purely utility floor, the first floor has the bedrooms, and the attic possibly with a gallery houses the living, dining, and cooking area.

...and are stuck. First of all, you look to see if the property somehow fits the space program. Also gladly without an architect. V1: yes, it will fit. Then you can let go of fears. And then you try out other possibilities before you get stuck on minor details (V2 and V3). For example, I would shuffle the floors and rooms several times, sometimes save or print them out. Preferably also with a pencil so you can quickly change something. V4, V5, V6, etc. always on a new sheet of paper (or JPG if you prefer).

What would you change about the floor plan?

Why? There is no garden anyway.

I wouldn’t say that. There are still 36 sqm… not large, rather very small. But even there you can create a small oasis, plant some herbs, and sit under a beautiful house tree. You plant roof terraces two or three times… then you don’t feel like spending money on plants that dry out up there anyway (it’s just a terrace).

Did I miss where south is?

Have I overlooked where south is?

No, but that the 36m2 yard is something the neighbors are also allowed to walk over ...

Thanks first of all to everyone for the ideas and opinions....

Without even having looked at the drafts.
Why tinker around if you still need an architect anyway?
Going to the architect with finished homegrown drafts is the worst approach.

I think the architect wants to have ideas from us as well, of course not too detailed (that can also be harmful), but before making the architect create 10 drafts from the beginning, I try to make something myself first. That also costs something.

How do the neighbors build the individual floors? Sleeping under living space is rather suboptimal.

So the ground floor is all commercial there. Living starts from the 1st floor up.

Well, when you look at what some architects deliver here, I find it advisable to have certain ideas.

Do the utility lines come from the back?

You have a good budget for the project, please reconsider your preferred heating technology.

I would be happy if we don’t have to stretch that. As a rough estimate, I multiplied the area of the house including garage and basement by €2,500 (250 sqm x €2,500 = €625,000). Hope that’s enough.

Utility lines come from the garage side. The gas supply line is about 5 meters away. So gas would be good. Or why should I reconsider the heating technology? Gas isn’t bad, is it?!

First of all: landings stop the walking flow and don’t necessarily make a stair easy to walk on. If you are young or rather fit and want to rush/downstairs, then an uninterrupted walking flow is preferable. If you already have hip problems or other issues where you might need to stop, then take a stair with landings.
Many builders mistakenly take the simple stair with landings – it just looks better.

...and stuck. First of all, you look to see if the plot somehow meets the room program. Also often without an architect. V1: yes, it will fit. Then you can let go of fears. And then you try other possibilities before you get stuck on details (V2 and V3).
For example, I would shuffle the floors and rooms several times, also save or print sometimes. Preferably also with pencil, so you can quickly change something. V4, V5, V6 etc. always on a new sheet of paper (or JPG if you like).

I wouldn’t put it that way. There remain 36 sqm... not big, rather very small. But even there you can create a little oasis, plant some herbs and sit under a nice shade tree. Roof terraces are planted 2 or 3 times... then you don’t feel like spending money on plants that dry out up there anyway (it is a terrace).

Did I overlook where south is?

I see it differently with the stairs. If I walk a winding stair, I don’t find it very conducive to walking flow if the tread suddenly has only a few centimeters.

I can understand your general approach. I basically did the same. Living-dining area was already downstairs. But there is less space there due to the garage than upstairs and above all although part of the courtyard still belongs to the property, you cannot realize yourself there. You can reach the house from another driveway and play there with children etc. But basically a neighbor has a right of way and right to drive with a fence erection prohibition. Also it is a courtyard that is not particularly bright. I wouldn’t mind that for the garden, but we didn’t like the living-dining area there that much.

We also want to commission an architect at a later date,

Yes, but please really an architect, not an "architect" in the sense of a general contractor’s signature lackey.

The small plot is located right in the town center. The entrance is directly from the sidewalk. The neighbors have shops on the ground floor. At the back there is a small inner or rear courtyard that is quiet but can basically be crossed by the neighbors.

If the neighbors’ shops have to exist on such tiny plots, time will be your friend: I wish that soon someone on the left and/or right gives up and sells so that a parcel merging will open the way for more favorable buildability. Show the plot (cadastral extract, aerial photo, ... – don’t forget: if there are blackouts / whitenings or the like I’m out), then more targeted advice can be given.

Building envelope, building line and boundary: profile-matching annex to the neighboring building Number of parking spaces: one garage in the house Number of floors: basement+ground floor+1st upper floor+attic Roof type: pitched roof 40 degrees with dormers

"Profile-matching annex" and "40° pitched roof" are a tautology or even a contradiction.