can a house be sold without the knowledge that the siding of the house is all absetos. had a FHA inspection? Buyer was not told.

A house having asbestos does not prevent it from being sold. Not familiar with local rules in your area, but this is a prime example of the importance of good home inspections. I lend in MN WI IA ND SD. Find me at FirstTimeHomeBuyer-MN.com - Cambria Mortgage, NMLS 274132