Guide · Markets
The NAHB Housing Market Index: What Builder Confidence Tells You About Rates, Homebuilders and the Economy
The NAHB Housing Market Index is a monthly survey of US homebuilders that moves homebuilder stocks, Treasury yields and Fed expectations. Here's how it is built, why 50 is the line that matters, and what the October 2026 reading of 29 said.
The NAHB/Wells Fargo Housing Market Index (HMI) is a monthly survey run by the National Association of Home Builders since 1985. Builders of single-family homes are asked three questions: how they rate current sales of new homes, how they expect sales to go over the next six months, and how much traffic from prospective buyers they are seeing. Each answer is scored, the three are weighted together, and the result is a number from 0 to 100. A reading above 50 means more builders describe conditions as good than poor; below 50, the pessimists are in the majority. The survey is released at 10:00 a.m. ET, usually in the third week of the month, a day or two before the government's housing starts report.
Here's a real example. On October 19, 2026, the index fell three points to 29, below the 31 that economists expected and the lowest reading since June 2012. The sub-indexes told the story in more detail: current sales fell to 33, expectations for the next six months to 32, and buyer traffic to 18, the weakest since April 2012 if the first month of the pandemic is excluded. The survey also reported that 43% of builders had cut prices, the highest share since the NAHB began tracking it in 2020, with an average cut of 6%, and that 65% were offering incentives such as mortgage-rate buydowns. The builders blamed mortgage rates above 7%, fuel and materials costs, and labour shortages.
Why does a sentiment survey move markets? Because housing is the part of the economy that reacts first and hardest to interest rates. A fall in the HMI usually precedes a fall in housing starts and in homebuilders' order books, and the stocks of builders such as D.R. Horton, Lennar and PulteGroup, or the ETFs that hold them (ITB, XHB), often move 2% to 3% on a surprise. The Treasury market reads it as evidence that high yields are slowing demand, which can pull yields down; the Federal Reserve reads it as part of the picture on whether policy is tight enough. A very low reading with inflation still high, as in October 2026, is awkward for everyone: rates are hurting housing but have not yet cured prices.
There are limits. The HMI measures the mood of builders, not sales, and builders can be gloomy while still selling houses by cutting prices, which is exactly what the 2026 survey showed. It covers new homes, which are about a tenth of US home sales; the existing-home market, where most Americans buy, is measured separately by the National Association of Realtors. And the index is diffusion-based, so a reading of 29 does not mean activity fell 71%; it means that pessimists outnumber optimists by a wide margin.
A practical way to use it: note the consensus beforehand, compare the headline and the traffic component, and then watch the next two releases, housing starts and existing-home sales, to see whether the mood shows up in the activity data. When the HMI and the starts move together, the trend is real; when sentiment falls but starts hold up, builders are usually complaining about margins rather than demand.