Drywall sanding, trim cutting, and flooring installation all produce a fine dust that doesn't stay put. It drifts into cabinets, settles on top of door frames and window trim, gets pulled into the HVAC system, and keeps falling for days after the last contractor leaves.
That's why a real post-construction clean works in stages. The first pass removes debris and the heaviest dust. The detail pass cleans cabinets inside and out, fixtures, windows, sills, tracks, and vents. A final pass catches the dust that has settled since, so the space is actually clean on move-in day.
New finishes need care. Fresh hardwood, new tile, and new countertops can be scratched by grit or damaged by the wrong product, so floors are vacuumed thoroughly before they're ever mopped, and stickers and paint specks are removed with tools that won't mark the surface.
If you're a homeowner finishing a remodel, or a builder handing over a new home or commercial space, schedule the clean after the final trades are done but before the furniture arrives. That's when every surface is easiest to reach.