It seems odd to me BM was hired to do anything yet.
Late hubby used to work construction, and landscapers never did anything on site at this stage of the build.
It looks to me like the site was very recently leveled for the concrete foundation pour.
If memory serves, after the foundation is done framing lumber & tresses would be delivered next, drywall, siding, insulation, roofing, electricians, plumbers...
and a landscaper's part comes WAY after all of that.
Maybe they do things differently there.
Or maybe riverfront land is different?
I dunno, it just seems odd to me.