Minimum height in the stairway isn't part of the specification. The house being structurally sound so it doesn't collapse / otherwise cause a safety hazard in the building is.

Not sure if there's a type of architect that has to think about the wholistic picture including function, usability and general ergonomics. They probably cost more too.

> Minimum height in the stairway isn't part of the specification

Uh, yes it is? It's in most building codes, as well as in the IBC (International Building Code).

Architects don't deal with structural soundness; that's a misconception. That's the domain of the structural engineer. The architect IS the generalist.

> Not sure if there's a type of architect that has to think about the wholistic picture including function, usability and general ergonomics.

Pretty much every architect I ever had to work with was like that.