BigB
If they want you to "Certify" wiring in a house you might be able to write a letter such as,
On this date, I did a NON destructive inspection of the wiring in your house, and judging by what I could see, the wiring in the house seems to meet the present electrical code.
This way by doing a non destructive search, you didn't rip out any walls or ceilings, yet you don't know if there were any hidden splice boxes behind these walls.
This happened to me personally. My son bought a house, and after I started to renovate a little bit, I found hidden splice boxes behind the walls and ceilings. Needless to say, that I had to rip out 90% of the drywall to make sure I removed all of the hazards.
