Purpose: To help building officials, designers, and builders in Maryland evaluate and attain compliance with the International Energy Conservation Code (IECC).

Maryland's law related to building codes is called the Maryland Building Performance Standards (MBPS). It requires each jurisdiction in Maryland to use the same edition of the same building codes that are the International Building Code (IBC), the International Residential Code (IRC), and the IECC. The State has modified the IBC and the IRC to coincide with other Maryland laws. The International Building Code (IBC), the International Residential Code (IRC), and the IECC, with modifications by the State, constitute the MBPS.

Maryland law requires the Maryland Building Codes Administration, housed within the Maryland Department of Labor’s Division of Labor & Industry, to adopt the most recent version of the IECC within 18 months of the ICC’s release of a new code. On May 29, 2023, the State of Maryland adopted the 2021 IECC. All local jurisdictions were required to amend and adopt the new code for local code enforcement by May 29, 2024,  12 months after state adoption.

Resources

Copies of the 2021 IECC document can be purchased from the Internationa​l Code Council.

The Code of Maryland Regulations (COMAR) provides authority for Maryland Building Performance Standards. See COMAR Title 09, Subtitle 12, Chapter 51.04(D) for Maryland-specific modifications to the International Energy Conservation Code.

Other resources:

• Maryland Building Officials Association
• Maryland State Profile | DOE Building Energy Codes Program​
  
• International Code Council
  
• Your Home and the Energy Code: What you need to know for your home building or renovation project
• Reaching 90% Compliance: Maryland Building Code Compliance Roadmap​

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