Codes - As introduced, extends the period in which the fire marshal is required to provide a decision on an appeal regarding building or fire codes involving a county building located in a city when there is a conflict between city and county from 10 working days to 15 calendar days. - Amends TCA Title 68, Chapter 102 and Title 68, Chapter 120.

SB 721 changes a deadline for resolving building and fire code disputes between cities and counties in Tennessee. It extends the time the fire marshal has to decide on appeals involving county buildings in cities (where city and county codes conflict) from 10 working days to 15 calendar days. The bill directly affects county governments and city officials managing building code enforcement in areas with jurisdictional conflicts. This is a procedural change to the timeline, not a new policy or requirement.