Slowdown Threatens to Deepen Housing Shortage
Based on a new report from Zillow, permitting has fallen for 44 straight months as U.S. builders retreat from the markets where they once drove the biggest construction gains.
The U.S. housing market is entering a consequential phase: Homebuilders are pulling back on new projects just as the country remains millions of homes short of what it needs.
More than 1.42 million residential building permits were issued nationwide in the 12 months through July 2026, a 1.7% decline from the previous year, according to a new analysis from Zillow. The latest figures put permitting 19.4% below the trajectory established during the five years before the pandemic–a gap that has widened to its largest level of the decade.
The retreat has now extended for 44 consecutive months on a year-over-year basis.
That matters because America’s housing affordability crisis is not simply a consequence of high mortgage rates. A chronic shortage of homes has left the market structurally undersupplied, and a prolonged slowdown in new construction risks making that imbalance worse.
Builders are responding to weaker market conditions by becoming more selective about where–and what–they build. The pullback is particularly pronounced across parts of the Sun Belt, where developers added substantial amounts of housing during the pandemic-era boom and are now confronting higher inventories and softer demand.
Austin recorded the largest decline among major markets, with permitting down 25.3% over the past year. San Antonio followed with a 24.1% drop.
The pattern is markedly different in several coastal and Midwestern markets, where construction activity had been comparatively restrained during the boom. San Jose permits more than doubled, rising 122%, while Seattle increased 35.8%, Birmingham 32.9%, Los Angeles 30.6% and San Francisco 29%.
Even those gains need to be viewed in context. Los Angeles issued 34,696 permits during the period–barely more than half the totals recorded in Dallas and Houston, at 61,275 and 59,214, respectively.
Builders Are Adjusting the Product
The slowdown is not the only change taking place. Builders are also modifying the homes they produce in an effort to keep prices within reach of buyers facing elevated borrowing costs and stretched household budgets, according to Zillow.
The median detached single-family home completed in 2025 measured about 2,300 square feet, down from 2,400 square feet in 2019. The median lot also contracted, to about 8,700 square feet from 9,000.
At the same time, the number of detached single-family homes completed nationwide fell 2.5% in 2025 to roughly 817,000. That was the third consecutive annual decline and the lowest level since 2020, although completions remained 4.4% above the 2019 total.
The shrinking footprint reflects a fundamental challenge for builders: producing homes that consumers can afford without absorbing costs that make new projects uneconomic.
There is at least one sign of improvement in the construction pipeline. Homes are being completed faster as the extraordinary supply-chain and labor disruptions of the pandemic fade. A median detached home completed in 2025 took about six months to build, one month less than during the peak of the construction delays in 2022 and 2023.
But faster construction does little to solve the longer-term supply problem if fewer projects are entering the pipeline.
A Supply Problem Waiting for Demand
The U.S. housing market has an estimated deficit of about 4.7 million homes. While increased construction has helped prevent that deficit from worsening, the recent slowdown creates a difficult setup for the next phase of the housing cycle.
Builders have an understandable incentive to slow production when inventories rise and buyers become more cautious. Yet construction decisions made today determine how much housing will be available several years from now.
If mortgage rates eventually decline, household formation accelerates and prospective buyers return to the market, today’s reduced permitting could translate into tomorrow’s shortage of new homes.
That could put renewed upward pressure on prices in markets that are already struggling with affordability.
The irony is that the markets that experienced the biggest construction boom are now among those seeing the sharpest pullback. Austin and San Antonio, for example, attracted substantial development during the pandemic as population and housing demand shifted toward the Sun Belt. Their subsequent inventory buildup has made builders less willing to start additional projects.
Meanwhile, markets that historically built fewer homes are showing some of the strongest percentage increases in permitting–but from much smaller bases.
The Affordability Paradox
The emerging pattern underscores the central paradox of the U.S. housing market.
Consumers need less expensive homes. Builders need projects that generate acceptable returns. And the country needs substantially more housing.
Those objectives do not always align.
Smaller homes and smaller lots can lower the cost of new construction, while faster building times can reduce some development expenses. But land, labor, materials, financing and regulatory
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