HUD and USDA’s Six-Month Delay on Enforcing 2021 IECC Rule A Win for Housing
This post has been updated.
In a win for NAHB and the housing industry, the Trump administration has announced a six-month delay in the implementation of the Biden administration’s mandatory energy code, an important step forward to help ease the nation’s housing affordability crisis.
Specifically, the Department of Housing and Urban Development (HUD) and Department of Agriculture (USDA) will wait an additional six months before enforcing the compliance dates for adopting 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.
“This six-month pause by HUD and USDA is an important step forward to help ease the nation’s housing affordability crisis,” said NAHB Chairman Buddy Hughes. “Compliance with this rule would make it much harder for home builders and multifamily developers to build housing that is available and affordable for American families.
In fact, the Home Innovation Research Labs has found that compliance with the 2021 IECC can add more than $20,000 to the price of a new home, but in practice, home builders have estimated increased costs of up to $31,000.
The updated compliance dates are as follows:
| Program | Initiation Event | Compliance Date |
| HOME and HTF (If HOME/HTF funding is layered with other HUD funds, the later program compliance date applies) |
Participating Jurisdiction (PJ) or HTF Grantee Funding Commitment | Nov. 28, 2024 |
| Federal Housing Administration-Insured (FHA-Insured) Multifamily | Pre-application Submitted to HUD | Nov. 28, 2025 |
| FHA-Insured Single Family | Building Permit Application | May 28, 2026 |
| Public Housing Capital Fund | HUD approvals of development proposals for new Capital Fund or mixed financed projects | Nov. 28, 2025 |
| Project Based Vouchers | To be determined in further guidance | April 1, 2026 |
| Competitive Grants (Choice Neighborhoods, Section 202, Section 811) | Notice of Funding Opportunity (NOFO) Publication | Next published NOFO after six months from the date of publication of this notice |
| All programs, persistent poverty rural areas | Based on program-specific event, above | May 28, 2026 |
| Rental Assistance Demonstration (RAD) | N/A | Already effective by Federal Register Notice July 27, 2023 |
NAHB commends the Trump administration for recognizing the importance of bringing down the cost of housing and will continue to pursue all avenues on the congressional, regulatory and legal fronts to overturn this harmful energy code rule.
Latest from NAHBNow
Feb 26, 2026
2026 National Housing Center Award Recipients AnnouncedThe National Housing Center Board of Governors has announced the recipients of the 2026 National Housing Center Awards. The induction and award ceremonies will take place during the 2026 Spring Leadership Meeting at the National Housing Center in Washington, D.C.
Feb 25, 2026
House Approves NAHB-Supported Energy Codes BillThe House today approved the Homeowner Energy Freedom Act, NAHB-supported legislation that would repeal burdensome provisions from the Inflation Reduction Act, including a provision that provides states $1 billion to incentivize the adoption of the 2021 International Energy Conservation Code (IECC).
Latest Economic News
Feb 25, 2026
Housing’s Share of GDP Declined Further at the End of 2025Housing’s share of the economy was 16.0% in the fourth quarter of 2025, according to the latest estimates of GDP produced by the Bureau of Economic Analysis. This share is down from 16.1% in the third quarter and is also lower than 16.3% as registered just one year ago.
Feb 24, 2026
Young Adult Headship Rates in 2024: Cyclical Slip or New Equilibrium?Reversing the post-pandemic rebound, the headship rates among young adults (the share of the population heading their own households) declined in 2024, according to NAHB’s analysis of the American Community Survey (ACS) data.
Feb 23, 2026
A 25-Basis-Point Decline in the Mortgage Rate Prices-In 1.42 Million HouseholdsHousing affordability remains a critical challenge nationwide, and mortgage rates continue to play a central role in shaping homebuying power. Although rates have declined from the recent peak of about 7.6% in 2023 to around 6.01% as of February 19,2026, they remain elevated relative to typical levels in the 2010s.