Building Energy Code
Quick Summary
Louisiana requires new residential construction and major renovations to meet the 2021 IECC energy code standards, effective July 1, 2023—meaning your new home or significantly upgraded building must include efficiency features like improved insulation, HVAC systems, and window performance. To verify compliance, work with your builder or contractor to ensure they follow these state-mandated standards, which help reduce your energy bills over time.
AI-generated summary • Updated 7/12/2026
Program Details
- Program ID
- 1820
- Last Updated
- 6/18/2023
Eligibility
Program Summary
Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more detailed information about building energy codes, visit the DOE and BCAP websites. The Office of the State Fire Marshal is granted the authority to promulgate amendments, revisions, and alternative compliance methods for the code. LA Energy Code Requirements and Links are available here. On January 1, 2015, the effective Louisiana residential energy code became the 2009 IRC Chapter 11
Contact & Resources
Please verify current program details with the administering agency before making any financial decisions.