Any wood that has more than 1/8 inch of char should be replaced for structural reasons.  

The home inspector discovered charring on the underside of the roof when he looked in the attic.  

None of the wires looked charred, but I replaced the switch and it was fine.

There are paints/coatings available that will seal charred framing members and conceal the smell.

The more cat piss the better, and the more charred wood, the better.  

Take a look here: https://www.treasury.gov/resource-center/data-char...Again, every investor has their own risk profile, but don't confuse cash with investments. 

Watch the char marks.

They also recommended we have a basement company come in and really seal up the basement, and this would include digging around the house to install pipes to help water flow away from the house; $10-15k.They also found a small amount of mold in the basement, and a good amount of mold in the attic; approximately $4,500 to remove.To top it all off, they noticed that there had been a fire in the basement; the subfloor above is black/charred. 

@Char Prado will do, I am looking to information share with local investors.Thanks,Cheryl

@Char Prado I do have a no smoking clause.