A nice concept - but at the end, it's still a structure made out of wood and cardboard, and if the staff isn't trained, well just look up Cy Porter and his videos of home inspections for the utter idiocy and cost-cutting [1]...

[1] https://www.youtube.com/@cyfyhomeinspections

With a few hundred highly trained consultants spread through major markets and working directly with contractors with decent jobflow to train them, it could work.