New WOTUS Rule Further Muddies the Waters

Regulations
Published

Note: The final rule was published in the Federal Register on Sept. 8. NAHB will continue to provide updates as more information becomes available.

The Environmental Protection Agency and U.S. Army Corps of Engineers have issued an amended final waters of the United States (WOTUS) rule in the aftermath of the recent U.S. Supreme Court decision in the case of Sackett v. EPA.

Unfortunately, the revised WOTUS rule — which was made with no public input from interested stakeholders — represents a blow to housing affordability.

The Supreme Court’s Sackett decision made clear the federal government only has authority over relatively permanent waterbodies. But the Biden administration failed to provide a definition of a “relatively permanent” waterbody. Furthermore, the revised WOTUS rule fails to exclude from federal jurisdiction all “ephemeral features,” which only possess water following a rainfall event.

This uncertainty regarding what waters are subject to federal jurisdiction sets the stage for continued federal overreach, bureaucratic delays during the wetlands permitting process, and regulatory confusion for home builders and land developers.

Immediately after the rule was issued on Aug. 29, NAHB Chairman Alicia Huey issued an official statement saying the new regulation “will directly result in continued regulatory barriers to affordable housing as single-family and multifamily developers struggle to find the developable land necessary to produce the new affordable housing units this nation desperately needs.”

In short, the new WOTUS rule is a missed opportunity to provide regulatory certainty to the home building industry.

WOTUS Map Post-Sackett

One Rule for 23 States; Another Rule for 27 States

Making matters even more confusing, several federal district courts had already issued a preliminary injunction against the Biden WOTUS rule released in January, which now prevents the agencies from implementing the recent WOTUS amendments issued on Aug. 29. This means the revised WOTUS definition will only apply in 23 states, the District of Columbia and the U.S. Territories.

In the other 27 states, the agencies are implementing the pre-2015 regulatory regime and the Sackett decision until further notice. The end effect is additional regulatory uncertainty, with our members having to comply with two different rules.

NAHB is proactively participating in the litigation in 27 states to encourage the agencies to, among other things, define a clear definition of a relatively permanent waterbody to provide regulatory certainty to the home building industry.

Meanwhile, NAHB will continue to meet with EPA and U.S. Army Corps of Engineer officials to seek further clarity regarding the newly enacted WOTUS rule for the other 23 states. We will urge the agencies to expedite approvals for jurisdictional determinations and Clean Water Act 404 permits based on an approved jurisdictional determination.

The agencies have indicated they will hold stakeholder hearings on the new rule in the near future. The agencies announced a public webinar on Sept. 12, but it is already at capacity. NAHB has requested the agencies to accommodate more industry stakeholders and the regulated public. Additionally, NAHB has requested a standalone meeting with the agencies to brief our nation’s home builders and land developers on the amended rule.

We will also continue to meet with federal officials to air our concerns with the new rule, offer pragmatic changes that maintain environmental protection of our nation’s waterways, and restore common sense and predictability to the federal wetlands permitting process.

View NAHB’s WOTUS page, where additional information will be posted on the content of this new rulemaking.

Subscribe to NAHBNow

Log in or create account to subscribe to notifications of new posts.

Log in to subscribe

Latest from NAHBNow

Advocacy

Jan 22, 2026

NAHB Podcast: The Davos Housing Update That Wasn’t

On the latest episode of NAHB’s podcast, Housing Developments, Chief Operating Officer Paul Lopez is joined by Chief Advocacy Officer Ken Wingert to discuss the latest housing policies, including the housing announcement (or lack thereof) at the World Economic Forum and NAHB's continued advocacy efforts for 2026.

IBS | Awards

Jan 21, 2026

NAHB Announces 2026 Best of IBS Finalists

More than 300 product entries in nine categories were judged by 42 industry and media representatives. See which products were selected as finalists in the 2026 Best of IBS Awards.

View all

Latest Economic News

Economics

Jan 22, 2026

House Prices Decline in Local Markets Despite National Growth

Nationally, house prices continued to rise at a modest pace in the third quarter of 2025, as mentioned in our previous quarterly house prices post. However, this national trend masks significant variation across local markets. While many metro areas continued to see house price appreciation, others experienced notable declines following several years of rapid growth.

Economics

Jan 21, 2026

Private Residential Construction Spending Edges Higher in October on Home Improvements

Private residential construction spending was up 1.3% in October, rebounding from a 1.4% decline in September 2025. This modest gain was primarily driven by increased spending on home improvements.

Economics

Jan 21, 2026

Single-Family Permits Cooled in the Fall

In October, single-family building permits weakened, reflecting continued caution among builders amid affordability constraints and financing challenges. In contrast, multifamily permit activity remained steady and continued to perform relatively well.