Unpermitted upgrades put seller in pickle

Should seller get 'as-built' permit or simply sell 'as-is'?

Dear Barry,

In past articles you’ve mentioned "as-built permits" for additions and alterations that were done without building permits. I have a property that was totally renovated — new electrical, plumbing, heating, and roof — all done without permits. I’m going to list the property for sale and want to know if an as-built permit is a good idea before I sell. Could you explain how this works? –Lou

Dear Lou,