Came across a house for sale which is on a slope.. where the garage and hall is in ground floor.. and you to take stairs down to the kitchen. Which is also on ground level from the back. Because the land is sloping downwards. Apart from feng shui issues and poor resale value, will there be any scientific problems.. i was told that the kitchen wall might get moist overtime since one of the wall is on the soil. The shaded part is the cross section is soil. Anyone had came across similar properties with such issues.

Side view cross section attached.

seen many properties like that, no issue at all as long you like it or not
when you look at the property, especially at kitchen, paint on the wall got fungus? usually water proofing should have already been done so no issue

Owned a unit of townhouse that was similar.

Never had any issues with that sub-road level rooms.

this layout is typical on slopped lands. realibility depends on contractor. if the retaining wall was done properly, there will be no issue on the structure & waterproofing.