The antonyms for the word "re-modeled" are "unmodified," "unchanged," "unadulterated," and "unaltered." These words imply that there has been no change made to the original form or structure of something. When a structure is unmodified or unaltered, it means that it has not undergone any changes in its design, appearance or layout. While remodeling suggests that changes have been made to improve or update something, the antonyms imply that there has been no tweaking or improvement of any sort. Sometimes it's necessary to leave things as they are, and these antonyms for remodeled convey just that!