Floor plan design city villa

In my opinion, these floor plans are not yet ready for construction, as they are not conclusive. On the ground floor, a lot of circulation space is planned, including an anteroom/airlock to the garage. The staircase has 19 steps, which would only be justified with a clear room height of 3.00 m. I do not see this room height in the elevations. The stairwell is also very long. The bay window extension in the living/dining room complicates and possibly increases the cost of the floor plan if the basement floor plan does not match it. The children on the upper floor really do not need a balcony; if anything, the parents should have one in connection with the bedroom. I find the garage too large, also in comparison to the house.

The bathroom on the upper floor is, of course, generously sized; whether it really still needs to be almost 13 m2 after furnishing the bathroom remains to be seen. The storage room also seems more like a leftover space and is poorly usable in terms of proportions. The door arrangement in the bedroom, together with the flush-mounted window, makes building a large wardrobe impossible. Here, the door would at least have to be shifted towards the bathroom.

Kitchen/ground floor, WC/ground floor and bathroom/upper floor are located in three different places, which complicates and increases the cost of the installation routing.

I would not commit to the building type "town villa." The term is associated with certain ideas about the building body and its proportions (square base plan; hipped roof, bay window, etc.), which can also be impractical in the respective building situation. Perhaps your room program fits much better into a free floor plan, from which a building form develops that is initially not fixed. This is the architect's job and is called preliminary design/design (work phases 1-3).

And: The house should also be an expression of individual living and lifestyle. For the construction cost, I would want to build a more interesting house with an architectural statement. You should fundamentally reconsider your building project and approach the design more freely. In addition, compliance with building and planning law ([Bebauungsplan]) must of course be guaranteed.

I find most of the rooms simply too narrow, as BeHaElJa already writes, they are tube-shaped. I don't like the floor plan. I think the views are okay.

Do you not like the floor plan because you find the rooms too narrow, or is it due to something else?
If you find "most" of the rooms too narrow, then that would have to apply to half to three quarters...
Brief listing of the narrowest rooms in the floor plan:
WC 1.4m wide <- you might be right here, but one should only need to wash hands and go to the toilet here. In an emergency, even shower.
Storage room 1.5m wide <- a closet on one side as storage space should be enough.
HWK 2.44m wide <- should be sufficient, right?
Bathroom 2.44m wide <- should also be adequate
Child 1 2.88m wide <- sufficient

The remaining rooms are all wider than 3 meters.

Currently, we are at €225,000 including the plot, but as said, a few trades are still missing. Of course, the targeted €300k does not yet include garden, terrace, etc. Limit is, as mentioned above, €350k. One is allowed to hope it will be cheaper ;-)

Regards
Michael

Invi85, maybe that really "is enough" sometimes. But if I am building a house, it should not just "be enough," it should actually offer me something. And there are currently shortcomings in various places, all the above comments are more than appropriate.

Please furnish the rooms - otherwise your Schön-beten has no basis.

Construction costs: € 230,000 for 167m2 NUF are € 1,377/m2 NUF; this is a very ambitious target that can only be met with very disciplined planning and a very simple construction and finishing standard.

which can only be maintained with very disciplined planning and a very simple construction and finishing standard.

I wrote it that way too. I was referring to my own construction project, it is in Lower Saxony but still, the standard offers were all around €1300/sqm, meanwhile we are at €1650/sqm with some extras that were not considered in the first offers.