International Residential Code 2024

International Residential Code 2024

The International Residential Code 2024 (IRC) sets the minimum rules for building one- and two-family homes and townhouses that are up to three stories tall. It covers all the main parts of building a home, like how it’s structured, how plumbing  and heating systems work, electrical wiring, and gas lines.

This new version has some big changes, including rules for energy storage systems, preparing homes for electric vehicles, and new standards for upstairs sleeping areas and using A2L refrigerants. There are also updates on how vapor barriers should be used and how to map hazards.