Data Analysis

Housing completions fell to a 1,128,000 annual rate in August, down 27.1% from a year earlier, the only change in the Census Bureau's report large enough to clear its own margin of error.

Building permits ran at 1,394,000 and starts at 1,275,000, both changes too small to be statistically significant. Builder confidence fell to a 12-month low the day before.

Housing completions ran at a seasonally adjusted annual rate of 1,128,000 in August, 27.1% below the August 2025 rate of 1,548,000 and 11.9% below July, the Census Bureau reported Thursday. Building permits came in at 1,394,000, down 2.7% from July but 3.5% above a year ago. Housing starts were 1,275,000, down 2.6% from July and 1.2% from August 2025. Of those figures, only the completions declines are statistically significant. The South region accounted for 745,000 of the permits and 622,000 of the completions.

That significance test is what the rest of this report is about. It is the difference between a number that means something and a number that is inside its own error bars.

Which August housing numbers actually moved?

Census publishes a margin of error with its starts and completions estimates, and it explains the test plainly: if the range contains zero, it is uncertain whether there was an increase or a decrease at all.

Run the August figures through that test and most of them fail it. Starts fell 2.6% month over month with a margin of ±12.0 percentage points. They fell 1.2% year over year with a margin of ±10.8. Single-family starts rose 7.6% from July with a margin of ±14.0. Every one of those ranges contains zero, which means the Census Bureau itself cannot say whether starts rose or fell in August.

Completions are different. The 11.9% monthly decline carries a margin of ±9.7 points, and the 27.1% annual decline carries a margin of ±8.9. Neither range reaches zero. Single-family completions fell 10.4% from July against a ±9.3 margin, which also clears. Those are real declines, and the annual one is large.

Building permits carry no margin of error in this release because they are not a sample estimate in the same way. Permits were down 2.7% from July at 1,394,000 and up 3.5% from August 2025, with single-family authorizations at 878,000.

Why do falling completions matter more than falling starts?

A completion is a finished home that can be occupied. A start is a hole in the ground. Completions are what actually add to the supply buyers can compete for this fall and winter, and a 27.1% annual drop means the pipeline that was feeding new inventory through 2025 has thinned considerably.

Builders pulled back on starts through late 2025 as financing costs stayed high, and completions lag starts by roughly six to twelve months for single-family homes and considerably longer for apartment buildings. August's completions number is the arithmetic consequence of decisions made a year or more ago. It also means the correction is already locked in for the next several months, whatever happens to rates from here.

What does this mean for Florida housing supply?

The South census region, which includes Florida, accounted for 745,000 of August's 1,394,000 permits and 622,000 of the 1,128,000 completions. More than half the country's new home construction runs through the South, so a national completions decline of this size is disproportionately a Southern one.

That lands on a Florida market where existing supply is already tightening. Florida Realtors reported on September 16 that single-family inventory across the state fell 13% year over year in August and condo and townhouse inventory fell 11.5%, while the single-family median price rose just over 1% to $415,000. For two years the Florida story was supply rebuilding, in some metros faster than buyers could absorb it. New construction slowing while resale listings shrink points the other way.

The caution here is that the census South region stretches from Texas to Delaware, and Florida is one state within it. Census does not publish a Florida cut in this monthly release. The regional figures establish direction, not a Florida number. Metro-level conditions are tracked on the Tampa, Orlando and Jacksonville hubs and in the Florida housing tracker.

What are builders saying?

The National Association of Home Builders published its September NAHB/Wells Fargo Housing Market Index on September 16. The composite fell three points to 32, a 12-month low. Current sales conditions fell four points to 35. Sales expectations for the next six months dropped six points to 37, the steepest of the three component declines. Traffic of prospective buyers held steady at 23.

Any reading below 50 means more builders view conditions as poor than good, so 32 describes a sector that has been pessimistic for a while and got more so in September. The six-point drop in six-month expectations is the line worth watching, because expectations feed the start decisions that become completions next summer.

NAHB publishes regional three-month moving averages, including a South figure, in materials this desk could not retrieve, so the sentiment figures above are national only.

How do rates fit into this?

Financing costs sit on both sides of this report. Builders borrow to put up homes and buyers borrow to purchase them, and both rates have been climbing.

Freddie Mac's Primary Mortgage Market Survey, a weekly average, put the 30-year fixed at 6.76% for the week ending September 10. Mortgage News Daily's daily index read 7.22% on September 15. The gap between the two is unusually wide right now, so any mortgage rate figure needs its series named to mean anything.

The Federal Reserve raised its target range for the federal funds rate by a quarter point to 3.75% to 4% on September 16. That is an overnight bank rate and the Fed does not set mortgage rates, which track long-term yields. It postdates August entirely and explains none of these numbers, but it is the environment in which builders decide what to start this fall.

What should buyers and sellers take from this?

For buyers considering new construction in Florida, fewer completions means fewer finished homes competing for the same buyer, which tends to reduce the pressure on builders to discount. The incentive-heavy market of 2025 was built on standing inventory that is now being worked down.

For sellers of existing homes, less new supply removes a competitor. That is a modest tailwind against the demand weakness the NAHB survey describes.

For everyone, the honest summary of August is that completions fell sharply and everything else in the report is statistical noise. September's report, due in October, will show whether the completions decline is a trend or a single hard month.

Limitations

Census marks starts and completions changes with 90% confidence intervals. Every starts figure in this report failed that test and is reported here as not statistically significant, which is how Census itself frames it. Monthly figures are seasonally adjusted annual rates, not counts of homes, and they are revised in subsequent months; July's figures cited here are already revised values.

The census South region covers sixteen states and the District of Columbia, and no Florida-specific figure appears in this monthly release. Regional figures should not be read as Florida figures. The regional values cited are the South's own seasonally adjusted annual rates as published in this release.

NAHB's regional three-month moving averages, including the South, were not retrievable for this report, so builder sentiment is described at the national level only. The Florida Realtors figures cited come from a different publisher with a different methodology and describe existing-home inventory, not new construction. The Federal Reserve decision postdates the August reference period.

Sources

U.S. Census Bureau and U.S. Department of Housing and Urban Development, "Monthly New Residential Construction, August 2026," released September 17, 2026, census.gov/construction/nrc.

National Association of Home Builders, NAHB/Wells Fargo Housing Market Index, September 2026, nahb.org.

Florida Realtors, "Florida housing market levels off in August," published September 16, 2026, floridarealtors.org.

Freddie Mac Primary Mortgage Market Survey, week ending September 10, 2026, freddiemac.com/pmms.

Mortgage News Daily 30-year fixed rate index, September 15, 2026.

Board of Governors of the Federal Reserve System, FOMC statement, September 16, 2026.

Disclosure: Jon Brooks is a co-founder of Momentum Realty, a Florida real estate brokerage that owns and funds Florida Housing Intelligence. Momentum has a financial interest in Florida real estate transactions, including in markets named here. See our editorial standards.