Schedule of quantities m2 site (property lines) and green areas (floor)

Hey Guys, looking for suggestions…
I need to do a schedule showing the sqm of the building site (property line) and also the green areas (that in this case is just a floor), there is any suggestion on how to put these 2 elements in the same schedule and get the 2 sqm values?
multiple categories don’t seem to work. Right now I have just redrawn property lines with the green areas, but it would be cool if this could be automatically updated, any way to do this in dynamo? seems is not possible yet to modify property lines based on a floor in dynamo… Open to suggestions and ideas.

it should be like this.

Not directly possible. Either a dummy schedule or a duplicate site on an invisible workset/otherwise hidden by default.

Ok, thank you… I kind of guess it…