Pennsylvania adopted a new version of the International Building Code (and other associated I-Codes) effective January 1, 2026. Now that the new code is officially in effect, here are the key dates to be aware of for the 6-month concurrency period:
Effective Date: January 1, 2026
- Permits submitted on or after January 1, 2026, must comply with the state-amended 2021 edition of the International Building Code (IBC).
- 6-Month Concurrency Period: If a design or construction contract was signed before January 1, 2026, applicants may submit for a permit under the 2018 IBC until July 1, 2026.
- After July 1, 2026: All permit applications must comply with the 2021 IBC, regardless of contract date.
Accessibility provisions will continue referencing:
- The 2018 International Building Code (Chapter 11)
- The 2009 edition of ANSI A117.1
This exception remains in place based on a prior Pennsylvania Commonwealth Court ruling.
The City of Philadelphia has followed the state in adopting the 2021 I-Codes. Per a code bulletin dated October 20, 2025, the City of Philadelphia will transition to the 2021 IBC on July 1, 2026.
- Before July 1, 2026: Permit applications may be reviewed under either the 2018 or 2021 IBC.
- On or after July 1, 2026: All applications must comply with the 2021 IBC.
Additional information from the City of Philadelphia is available here:
https://www.phila.gov/media/20251021080549/B-2501-Implementation-of-2021-International-Codes.pdf