Do you know what is behind that foam insulation?
I can find anything behind any wall in this house in less than a minute.
I started "Rough In Documentation" with Patrick Fitzsimmons almost 8 years ago.
Right before insulating, after the last inspection, we paint the house with lights and broadcast quality camera equipment to produce a DVD library of every square inch of the place.
This service costs 20 cents per square foot - heated and is invaluable if you ever need it.