Final WOTUS Rule a Blow to Housing Affordability
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.
Latest from NAHBNow
Feb 20, 2026
Statement from NAHB Chairman Bill Owens on Supreme Court’s IEEPA RulingBill Owens, chairman of the National Association of Home Builders (NAHB) and a home builder and remodeler from Worthington, Ohio, issued a statement after the Supreme Court issued its verdict curtailing the power of President Trump to impose tariffs under the International Emergency Economic Powers Act (IEEPA).
Feb 19, 2026
2026 Builders’ Show Spotlights Innovation, Demand for Home BuildingNearly 75,000 registrants filled the exhibit halls of the Orange County Convention Center as the National Association of Home Builders (NAHB) hosted the NAHB International Builders’ Show® (IBS), the largest annual light construction show in the world, Feb. 17-19.
Latest Economic News
Feb 19, 2026
Delinquency Rates Normalize While Credit Card and Student Loan Stress WorsensDelinquent consumer loans have steadily increased as pandemic distortions fade, returning broadly to pre-pandemic levels. According to the latest Quarterly Report on Household Debt and Credit from the Federal Reserve Bank of New York, 4.8% of outstanding household debt was delinquent at the end of 2025, 0.3 percentage points higher than the third quarter of 2025 and 1.2% higher from year-end 2024.
Feb 18, 2026
Overall Housing Starts Inch Lower in 2025Despite a strong finish in December, single-family home building dipped in 2025 as persistent affordability challenges continued to weigh on the market.
Feb 18, 2026
How Housing Affordability Conditions Vary Across States and Metro AreasThe NAHB 2026 priced-out estimates show that the housing affordability challenge is widespread across the country. In 39 states and the District of Columbia, over 65% of households are priced out of the median-priced new home market. This indicates a significant disconnect between higher new home prices, elevated mortgage rates, and household incomes.