Purchased as is property 2008, also owner affadavit present, have now found damage that had not been disclosed at sale, we are now renovating and all joists are dry rotted and have been sistered by prior owner, also prior owner had run new septic line from added bathroom and compromised foundation, none of this noted in inspection, or disclosed before sale, is there any recourse?

You bought a house without paying $100 for a home inspection? PARTICULARLY an as-is sale... thats a red flag FOR an inspection if there ever was one.

Do you understand what "As-Is" means? No there is no recourse. You should have done a very thorough inspection before buying an As-Is property.

I notice he did mention inspection... but when that inspection occurred and by whom matters here... if they DID pay to have a home inspection PRIOR to the sale... then any recourse would be with the inspector for missing all that.

As they found out... AS-IS means... this baby has problems.. and we don't want to deal with them so pay accordingly... just like an other sale... the only guarantee you have... is that they could convey clear title to the item... but no other warranty. When all the defects were open and visible to an inspector. ( I.E. they didn't have a crew replacing all the sheet rock covering up everything and putting a fresh coat of paint to hide everythingthe week before the sale)

If (1) the defects were of a type that could not be viewed during a typical home inspection; and (2) if there were no conditions that would have put you or your inspector on notice that more inspections were needed; and (3) you can prove that the prior owner knew of these defects, then yes, you have recourse and can file a lawsuit.

I suggest that you seek out a free consultation with an attorney in your area who specializes in construction litigation to see if you have a case.