Floor plan design single-family house 160 sqm, narrow plot

Development plan/restrictions
Plot size: 667 sqm; width = 16 m
Slope: Yes, 2m over a width of 16 m
Site coverage index: §34
Floor area ratio: §34
Building window, building line and boundary: §34
Edge development: No
Number of parking spaces: Yes
Number of storeys: 2

Style: Gable roof
Orientation: South azimuth +20°

Requirements of the builders
Detached single-family house
No basement, storeys: 2
Number of persons: 3, including 1 child
Space requirements on the ground floor and upper floor
Office: home office
Open architecture
Modern construction
Open kitchen, kitchen island
Number of dining places: 6-10
Fireplace: No
Terraces on the gable sides

House design
Planning by:
- Do-it-Yourself; original design by a construction company was slightly modified
What is not liked? How could a pantry be sensibly integrated on the ground floor?
Price estimate according to architect/planner: 400k
Preferred heating technology: heat pump

If you have to do without, which details/extensions
- can you do without: garage will be built later. KNX is prepared in the basic equipment and gradually supplemented
- cannot do without: large dressing room as multi-purpose room

How could a pantry on the ground floor be sensibly integrated?

Under the stairs (?)

-Do-it-Yourself; The original design by a construction company was slightly modified

What were the modifications and their reasons; the original design and especially measurements would be helpful.

And a site plan with the house on the property including north arrow. And, where does the slope come into play?

Under the stairs (?)

What were the adjustments and their reasons; the original draft and especially measurements would be helpful.

Under the stairs (?)

What were the adjustments and their reasons; the original draft and especially measurements would be helpful.

A storage closet will be placed under the stairs

And a site plan with the house on the property including a north arrow. And where does the slope come into play?

North is at 11 o'clock. The slope is at the bottom. However, it is retained by a supporting wall.

Something still doesn't add up, plot 16 m wide, house 12 m and terraces on the right and left.

Size of the plot: 667 sqm; width = 16 m
Slope: Yes, 2m over a width of 16 m

Slope is at the bottom. Is but retained by a retaining wall.

Is there a plan with contour lines?