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

Workforce Development | National Housing Endowment
Aug 12, 2026
New NHE-Funded Tool Maps Training Opportunities Nationwide

ConstructionSkillsMap.org, a new nationwide tool funded by the National Housing Endowment, makes it easier to find skilled trades training opportunities in communities across the country.

Sustainability and Green Building
Aug 11, 2026
Achieving NGBS Green+ Certification to Stay Competitive in the Marketplace

The newly released 2025 National Green Building Standard (NGBS) provides many options for building more sustainably. NGBS Green Certification provides independent, third-party verification for a home, building, or land development. For those who wish to provide even more value for their clients, NGBS Green+ certifications recognize NGBS Green homes that go “above and beyond” in one or more areas of sustainability. Here are the seven certification options.

View all

Latest Economic News

Economics
Aug 11, 2026
Existing Home Sales Fall in July

Existing home sales continued to slow in July as record-high home prices and elevated mortgage rates weighed on buyers. Mortgage rates resumed an upward trend after the ceasefire ended in early July.

Economics
Aug 11, 2026
Weaker Demand for Residential Mortgages in Second Quarter

Demand for all types of residential mortgages was weaker, while lending standards for most were essentially unchanged in the second quarter of 2026, according to the recent release of the Senior Loan Officer Opinion Survey (SLOOS).

Economics
Aug 10, 2026
Wage Growth for Residential Building Workers Continues to Cool

Wage growth for residential building workers continued to lose momentum in the second quarter of 2026, reflecting softer housing construction activity and weaker labor demand. According to the latest data from the U.S. Bureau of Labor Statistics, both nominal and inflation-adjusted wages have weakened further, extending the cooling trend that emerged after the strong wage gains of the post-pandemic period.