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

Labor | Advocacy
Sep 25, 2026
NAHB Responds as Immigration Enforcement Keeps Legal Workers Off Job Sites

As the housing industry faces a severe labor shortage, NAHB members report that increased immigration enforcement and jobsite raids are heightening worker fears and further straining the construction labor pool.

Advocacy
Sep 24, 2026
NAHB Helps Kick Off Innovative Housing Showcase on the National Mall

NAHB Chairman Bill Owens was on the National Mall in Washington, D.C., yesterday to help open the 2026 Innovative Housing Showcase, an annual event presented by the U.S. Department of Housing and Urban Development (HUD).

View all

Latest Economic News

Economics
Sep 25, 2026
State and Local Government Tax Revenue Grows

Total tax revenue collected by state and local governments was up 5.8% from a year ago in the second quarter, according to the Quarterly Summary of State and Local Government Tax Revenue published by the U.S. Census Bureau. This was the highest year-over-year growth since the third quarter of 2024 (7.2%).

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

New home sales improved in August, but the monthly gain masked continued weakness in the broader new-home market. Elevated mortgage rates and ongoing affordability challenges continue to constrain demand, with new home sales remaining below last year’s pace and year-to-date sales lower than in 2025.

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.