I don't get hired by such as these, ergo to inspect the process might be trespassing.
BUT
Plenty of local subs might fill your ear with what they are asked to do/not-do that can give you food for thought.
If the city/BTU would allow you to visit energy consumption of addresses known to be Builder A or B, then that perspective could be weighed against first-costs.
The #1 cause of lawsuits are foundation failures in this volatile clay supporting soils so maybe some local foundation repair companies might share some opinions, even if contrary to self interest.
Ten words or less ... a goal unattainable