| Feature | ADIBC 2013 | ADIBC 2021 | |---------|------------|-------------| | Base code | IBC 2012 | IBC 2018 + local updates | | Energy | Basic envelope + Estidama 1.0 | Estidama 2.0 + net-zero ready | | Elevator lobby | Required for >75ft | Required for >60ft | | Mass timber | Not addressed | Allowed (Type IV) | | Pandemic provisions | None | Ventilation/IAQ upgrades |