ICC to Move Forward with 2021 Building Codes Despite NAHB Objections

Codes and Standards
Published

The International Codes Council recently released its Final Action Report on proposed changes to Group B of its International Code, notably the International Residential Code and International Energy Conservation Code. The report did not address significant issues identified by NAHB after the online vote on the codes last fall and NAHB plans to appeal the decision.

NAHB sent a letter on Feb. 14 to ICC CEO Dominic Sims and President Greg Wheeler urging the building codes body to carefully reevaluate the validity of many approved voting officials, to reject two specific proposals as not meeting the intent of the energy code, and to reform some of its voting processes while retroactively reconsidering proposals that should not have been on the final ballot.

The results from the 2019 Online Governmental Consensus Vote, to determine 2021 building codes proposals, included several irregularities and discrepancies, specifically proposals for the International Energy Conservation Code (IECC). Some aggressive energy efficiency proposals that had been defeated at prior committee hearings and public comment hearings were approved in the online vote. When proposals are defeated at both hearings, they must get greater than a two-thirds majority in the online vote to overturn past results. It's a bar so high, no previous proposal had ever met the threshold with the online vote. But in this code cycle, 20 IECC proposals cleared the hurdle and came back to life.

The ICC Final Action Report left the results as reported after the online vote. The ICC found that all of its procedures had been correctly followed in the Group B development process.

While NAHB agrees that existing procedures were followed, staff believe those procedures were exploited, putting NAHB in a position to ask ICC to reconsider these proposals through their appeals process. Further, NAHB remains concerned that many of the codes changes will greatly reduce the functionality of the 2021 IECC and significantly impact housing affordability.

The deadline for an appeal is May 8.

NAHB is looking ahead to the development cycle for the 2024 codes, and is hopeful that the shortcomings of this cycle will be corrected so that the integrity of the ICC code development process, as well as the codes themselves, can continue to be the preeminent resource they are today.

For questions about the codes development process, please contact Craig Drumheller.

Subscribe to NAHBNow

Log in or create account to subscribe to notifications of new posts.

Log in to subscribe

Latest from NAHBNow

Membership
Sep 24, 2026
NAHB Mourns the Passing of Past Chairman Tom Woods

Tom Woods, 2015 NAHB chairman, passed away on Monday, Sept. 21. A Blue Springs, Mo.-based home builder and its former mayor, Woods served as president of Woods Custom Homes.

Economics
Sep 24, 2026
New Home Sales Rise as Affordability Challenges Continue

Sales of newly built single-family homes increased 6.4% in August to a seasonally adjusted annual rate of 684,000, following an upwardly revised July estimate, according to newly released data from the U.S. Department of Housing and Urban Development and the U.S. Census Bureau. The pace of new home sales was 2% lower than a year earlier.

View all

Latest Economic News

Economics
Sep 24, 2026
Single-Family Detached Homes Still Dominate Among the 55+ Population

Adults ages 55 and older make up a large and growing share of the U.S. population and play an important role in the U.S. housing market. In 2024, around 103 million Americans were ages 55 or older, ranging from adults still in the labor force to retirees.

Economics
Sep 23, 2026
Number of Bathrooms in New Single-Family Homes in 2025

Single-family homes started construction in 2025 typically had two full bathrooms, according to the U.S. Census Bureau’s Annual Survey of Construction.

Economics
Sep 23, 2026
Q2 2026 Remodeling Market Update: Labor and Nonlabor Input Costs

The remodeling industry is taking on a larger role within the residential construction sector. Structural tailwinds, such as an aging housing stock, the growing trend of aging-in-place among older home owners, and record-high housing wealth, will continue to grow remodeling’s market share further.