Pennsylvania Building Codes and Contacts

The following information is reprinted with permission from the Building Codes Assistance Project:
Pennsylvania climate zones
Current Commercial Code

Pennsylvania Uniform Construction Code, based on the 2009 IECC with reference to ASHRAE 90.1-2007
Passed 12/10/2009, effective 12/31/2009

Current Residential Code

Pennsylvania Uniform Construction Code, based on the 2009 IECC, 2009 IRC, and state-specific alternative energy code
Passed 12/10/2009, effective 12/31/2009

Although Pennsylvania is still using the 2009 IECC, several residential provisions from the 2015 IECC have been adopted as of January 1, 2016:

  • Section R202 only to the extent that this section contains the definition of “insulated siding”
  • Section R402.2.4 (relating to access hatches and doors)
  • Section R402.2.8 (relating to floors)
  • Table R402.4.1.1 only to the extent the row for “floors” was amended
  • Section 402.1.3 (relating to r-value computation)

Uniform Construction Code regulations allow compliance to be shown through the Pennsylvania Alternative Residential Energy Provisions, developed by the Pennysylvania Housing Research Center at Penn State University.

Read more about:

Climate Zones: 4A, 5A, 6A

Code Adoption and Change Process

Code Change Process

Regulatory:The Pennsylvania Department of Labor and Industry (DLI) has the authority to promulgate and upgrade the Pennsylvania Uniform Construction Code (UCC). Legislation requires that by December 31 of the year in which is issued “a new triennial BOCA National Building Code, or its successor building code”, and/or “a new triennial ICC International One and Two Family Dwelling Code, or its successor building code”, the department promulgate regulations adopting the new codes. Modifications to the code are reviewed through a series of public meetings and hearings.

As of 2011, amendments to the Uniform Construction Code Act of 1999 require 2/3 approval for any code update proposals by the DLI Review and Advisory Council (RAC). Among other changes, the RAC is required to submit a report on any proposed changes within 12 months of the official publication of ICC’s triennial code updates.

Code Change Cycle

Generally reviewed every three years with the publication of the new editions of the I-codes.

Next Code Update


Pennsylvania Code Contacts

Edward Leister
UCC Administrator
Department of Labor and Industry
Bureau of Occupational and Industrial Safety


Edward Leister
Chief Building Official
Department of Labor and Industry
Bureau of Occupational and Industrial Safety


Mike Turns
Senior Program Manager, Performance Systems
Penn Residential Codes Initiative

Libby Dodson
Energy Efficiency Programs
Office of Pollution Prevention and Energy Assistance (OPPEA)
Department of Environmental Protection

Carolyn Sarno Goldthwaite
Senior Program Manager
High Performance Buildings
Northeast Energy Efficiency Partnerships (NEEP)

This information was compiled by the Building Codes Assistance Project, and used with their permission.