At my school, some of the upper level honors courses were actually grad level. I took grad level, writing intensive Immunology, but technically, on my transcript, it was Micro 4xxH, for the grad students (majority of the class) it was an intro class: Micro 5xx.
Other classes would be undergrad, and I could make it honors if there wasn't an honors section, but I'd do some additional project to make it Honors.