Drywall dust is ground far finer than household dust, so it stays suspended in the air long after the sanding stops. Clean a room while that dust is still airborne and it will settle right back onto every surface you just finished, usually within a day.
That is why post-construction cleaning is done in passes rather than in one visit. The first pass removes bulk debris, adhesive, and the heavy material. The second pass details every surface. The final pass happens after the air has genuinely settled, which is often a day or more later.
The hiding places are consistent: window tracks, the top edges of door frames, vent and return covers, light fixtures, and the gap where cabinet crown meets ceiling. All of them get missed by a fast clean, and all of them shed dust back into a room for weeks.
Glass and tile need their own treatment. Paint flecks, adhesive, and grout haze do not come off with a general-purpose cleaner, and scraping glass carelessly leaves scratches a homeowner will notice on day one.
Finally, sequence matters against the trades. If painters or floor installers are still working, cleaning early means cleaning twice. A post-construction schedule should be built backward from the final inspection, not forward from whenever the crew happens to be free.