A nonconformance report or NCR is a construction-related document that addresses specification deviation or work that fails to meet quality standards. The report is used for the quality control process, in which it details the problem, how it occurred, and how to prevent it from happening again. The NCR can also be used to determine a resolution with the customer and to document any corrective changes that are made.

A typical nonconformance report contains the following items:

1. Key people that are involved in the NCR and specs affected under the NCR
2. An explanation of the corrective action taken or needed to be taken
3. What can be done to prevent the problem from happening again
4. Why the work did not meet the specifications
5. The primary main reason for the NCR and what went wrong