ICC to Move Forward with 2021 Building Codes Despite NAHB Objections
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.
Latest from NAHBNow
May 01, 2026
Podcast: What War and Fed Changes Mean for Housing Market and EconomyOn the latest episode of NAHB’s podcast, Housing Developments, CEO Jim Tobin and COO Paul Lopez are joined by Chief Economist Dr. Robert Dietz to discuss the latest economic news and what it means for housing.
May 01, 2026
Rescinded Energy Code Mandate Major Win for NAHB and Housing AffordabilityHUD and the Department of Agriculture (USDA) announced this week that they are rescinding a requirement that imposed the 2021 International Energy Conservation Code (IECC) and ASHRAE 90.1-2019 as the minimum energy-efficiency standards for certain single-family and multifamily housing programs.
Latest Economic News
Apr 30, 2026
U.S. Economy Rebounded in the First Quarter of 2026Real GDP growth accelerated in the first quarter of 2026, rebounding from a weak finish at the end of 2025, as government spending recovered following a disruptive shutdown.
Apr 29, 2026
Powell’s Chair Ends but He Keeps His Board SeatThe April meeting of the Fed’s monetary policy committee featured a lot of institutional news for a month in which the Fed kept monetary policy unchanged. The outlook for the economy and monetary policy remains unclear due to geopolitical turbulence and domestic policy uncertainty.
Apr 29, 2026
Home Building Shows Signs of Stabilization with Monthly Gain in StartsHousing construction activity strengthened in March, with a notable rebound in both single-family and multifamily starts, signaling improved builder activity despite ongoing headwinds from financing costs and affordability constraints. While the monthly gain points to renewed momentum, year-to-date trends remain mixed, particularly in the single-family sector, and permit activity suggests some caution moving forward.