The answer to 'my post-construction cleaning is filthy' is that post-construction cleaning can be extremely challenging due to the significant amount of debris, dust, and grime left behind from the construction process. Common causes include drywall dust, sawdust, paint splatters, and construction materials that have been tracked throughout the home.
Symptoms of a poorly cleaned post-construction home include visible dirt and debris on floors, countertops, and other surfaces, as well as a general sense of uncleanliness. In severe cases, the air quality may also be poor due to lingering dust and particles.