2021 International Existing Building Code – IEBC-2021

The 2021 International Existing Building Code® (IEBC) offers a consistent, performance-based framework for repairing, altering, adding to, or changing the occupancy of existing buildings. It facilitates the reuse of older and historic structures while maintaining safety, accessibility, and code compliance without requiring full adherence to new construction standards.

Highlights:

• Limits storm shelter capacity to specific occupancies; removes travel distance requirement
• Requires IBC Chapter 14/26 compliance for major exterior wall replacements
• Mandates snow load evaluation when structural repairs involve substantial damage
• Applies enhanced classroom acoustics to educational buildings undergoing major alterations
• Permits rooftop equipment additions without full structural review under specific weight/load limits
• Requires seismic evaluation when changing occupancy from S or U to other types
• Exempts furniture like cubicles and shelving from permits and Level 2 classification
• Revises sprinkler installation thresholds for Level 2 and Level 3 alterations in high-risk areas

Who It’s For:
Contractors, architects, and code officials working on renovations, adaptive reuse, and code compliance for existing buildings—especially where full new-construction standards are impractical.

IEBC-2021