re: Proper steps to selling a house?

Technically probably yes you would be legally obliged to fix all issues or disclose them once they are brought to your attention but in the real world the answer is a negative. Good move on your personal house and the original builder's warranty. You got to see what kind of fellow the builder was by how he reacted to the punch list.

Nice information here, I know not everyone can plan a move this far out but these ideas^ are interesting.