Antonyms for the phrase "bring up to code" could include neglect, disrepair, and noncompliance. Neglect suggests a lack of care or attention, meaning that a property or building is left to deteriorate without any attempts made to improve it. Disrepair similarly implies a state of poor maintenance or lack of repair, which could prevent a building from meeting certain codes or regulations. Noncompliance, on the other hand, means that a building or property does not meet safety or other standards required by law. In contrast to bringing something up to code, these antonyms suggest a state of decay, disrepair, or neglect where safety and quality standards are not met.