What specifically are the criteria for assigning a "construction quality" rating of 6 or 7.There must be a list of things that the number is based on besides a contractor being clean. Is is building materials/techniques (like 6 in stem walls or pressure treated lumber) used or finishes (like granite vs formica)? I get it that a higher number is indicative of a better built house but what is the number based on? August 27 2011 - Tulsa00YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.