Final WOTUS Rule a Blow to Housing Affordability

Environmental Issues
Published
Contact: Michael Mittelholzer
[email protected]
AVP, Environmental Policy
(202) 266-8660

In a blow to housing affordability and regulatory certainty for builders and other stakeholders, today the Biden administration established final regulations that will dramatically expand the definition of “waters of the United States” (WOTUS) under the Clean Water Act (CWA), even as the U.S. Supreme Court has yet to decide on the legality of key aspects of the rule.

“Rather than providing clarity and certainty for home builders and other affected stakeholders, this definition of WOTUS adds uncertainty and confusion to the regulatory process, raises housing costs and drastically increases federal overreach in the process,” said NAHB Chairman Jerry Konter.

Regrettably, the final rule continues to rely upon a confusing and legally flawed theory of CWA federal jurisdiction known as the “significant nexus test” to potentially assert federal control over most isolated wetlands and ephemeral streams impacting numerous activities, including home building.

In practice, the significant nexus test has proven extremely difficult to apply consistently in the field, leaving developers and builders unable to discern for themselves which isolated wetlands, ephemeral streams, or even human-made drainage features, like roadside ditches, are federally jurisdictional under the CWA.

NAHB believes the decision by the U.S. Environmental Protection Agency (EPA) and the Army Corps of Engineers (Corps) to finalize today’s WOTUS definition is counterproductive and shortsighted, especially since the Supreme Court’s upcoming ruling under Sackett v. EPA is squarely focused on the legality of the significant nexus test, which is a critical part of the final rule.

The new WOTUS rule radically extends the areas in which home builders are required to get federal permits will 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 rule will generate bureaucratic and project delays, and raise housing costs at a time when the nation is already experiencing a housing affordability crisis.

Moreover, the final rule’s continued reliance upon the significant nexus test when determining CWA jurisdiction over otherwise isolated and ephemeral features prevents states and local governments from acting as co-regulators, as intended by Congress when the CWA was drafted more than 40 years ago. And not only does the significant nexus test go well beyond the limits of federal jurisdiction set forth previously by the Supreme Court, it also results in duplicative and even conflicting wetlands requirements at the federal, state and local levels of government.

“The Biden administration has declared a housing affordability crisis, but if the administration is truly interested in knocking down barriers to affordable housing, it will direct the EPA and Corps to keep from implementing this rule until the Supreme Court issues its ruling in the Sackett case,” said Konter.

Subscribe to NAHBNow

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

Log in to subscribe

Latest from NAHBNow

Labor
Sep 09, 2026
TPS Set to Expire Today for El Salvadoran Workers Living in the U.S.

The Trump administration set an expiration date of Sept. 9 for Temporary Protected Status (TPS) for El Salvador, affecting roughly 200,000 Salvadoran TPS holders in the U.S. and further straining the construction industry’s labor shortage.

Environmental Issues
Sep 09, 2026
New Agency WOTUS Proposal Would Eliminate 'Wet Season' Concept

The Environmental Protection Agency and U.S. Army Corps of Engineers have announced a supplemental proposed rule offering a new approach to defining “waters of the United States” (WOTUS) under the Clean Water Act.

View all

Latest Economic News

Economics
Sep 10, 2026
Energy Prices Rise Again in August

Residential building material prices, excluding energy, rose 0.2% in August and were up 5.1% from a year ago. Energy prices rose sharply in August, as prices for energy inputs to residential construction rose 6.6% over the month.

Economics
Sep 09, 2026
Mortgage Applications Decline for Sixth Straight Month in August

Mortgage application activity continued to decline in August as elevated US treasury yields pushed mortgage rates higher. The Mortgage Bankers Association’s (MBA) Market Composite Index, a measure of total mortgage application volume, declined 3.2% month-over-month in August on a seasonally adjusted basis, marking the sixth consecutive monthly decline.

Economics
Sep 09, 2026
Who Are NAHB’s Builder Members?

The National Association of Home Builders (NAHB) conducts an annual census to better understand the composition and characteristics of its members. In 2025, 35% of NAHB’s membership was comprised of builder members—single-family and multifamily builders, residential and commercial remodelers, commercial builders, land developers, and manufacturers of modular/panelized/log homes.