How many days must a code official retain a set of approved construction documents after completion of work?

The retention period for a set of approved construction documents is typically established by building codes or regulations, which can vary by jurisdiction. In many cases, retaining these documents for 180 days after the completion of work allows the code official sufficient time to address any post-construction concerns, verify compliance, or respond to queries regarding the project.

This period balances the need for documentation availability post-completion while not being excessively long. Keeping these documents for a full year, for example, may not be practical given the storage concerns and the changing nature of building codes and regulations. Similarly, shorter retention periods of 60 or 90 days might not provide enough time for any necessary reviews or resolutions after the construction is finalized.

In essence, a 180-day retention period assures that there’s enough time for any follow-up required by the code official, making it the most reasonable answer to the question posed.