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

Economics | Advocacy

Feb 05, 2026

3 Major Factors Limiting American Construction Productivity

A recent Goldman Sachs report explores why the U.S. construction industry has underproduced compared to other countries’ construction industries. Between 1970 and 2024, productivity in the U.S. construction industry fell 30% while overall labor productivity more than doubled.

Advocacy

Feb 05, 2026

NAHB’s Monthly Update Highlights Housing Priorities and Industry Outlook

To help members articulate key housing priorities, NAHB’s Monthly Update provides the latest messaging framework for the Federation. See the current advocacy updates and more.

View all

Latest Economic News

Economics

Feb 05, 2026

Job Openings Fall as Labor Market Weakens

Running counter to the data for the full economy, the count of open, unfilled positions in the construction industry increased in December, per the delayed Bureau of Labor Statistics Job Openings and Labor Turnover Survey (JOLTS). The current level of open jobs is down measurably from two years ago due to declines in construction activity, particularly in housing.

Economics

Feb 04, 2026

Mortgage Rates Declined Despite Higher Treasury Yields

Long-term mortgage rates continued to decline in January. According to Freddie Mac, the 30-year fixed-rate mortgage averaged 6.10% last month, 9 basis points (bps) lower than December. Meanwhile, the 15-year rate declined 4 bps to 5.44%. Compared to a year ago, the 30-year rate is lower by 86 bps. The 15-year rate is also lower by 72 bps.

Economics

Feb 03, 2026

Homeownership Rate Inches Up to 65.7%

The latest homeownership rate rose to 65.7% in the last quarter of 2025, according to the Census’s Housing Vacancy Survey (HVS). While this was a modest quarterly increase, the broader picture continues to reflect significant affordability challenges. With mortgage interest rates remaining elevated, and housing supply still tight, housing affordability is at a multidecade low.