Texas commercial acoustic code requirements are primarily governed by the International Building Code (IBC) Section 1206, which mandates a minimum Sound Transmission Class (STC) of 50 for airborne noise between adjacent dwelling/sleeping units and public spaces. While enforced statewide, developers and local municipalities often implement stricter sound limits. When a Texas Building Passes Code and Still Fails Its Tenants A mixed-use development opens in Dallas. Within 30 day