Shares of KB Home (KBH) fell about 2% in after-hours trading on Tuesday, even though the homebuilder reported fiscal third-quarter results that came in above Wall Street expectations. The stock initially moved higher before reversing course, as investors shifted their focus to weaker margin guidance heading into the final quarter of the fiscal year.

KB Home earned $1.05 per share on roughly $1.3 billion in revenue for the quarter. Analysts had expected about $0.89 per share on similar revenue, making the headline results stronger than forecast.

Housing gross profit margin reached 16.5%, ahead of the 16.2% analysts had projected. Management said the improvement partly reflected a return to the company's built-to-order model, under which construction begins after a customer has signed a purchase contract rather than before, when homes are built as speculative inventory. About three-quarters of KB Home's third-quarter deliveries were built to order. Gross margin is one of the most closely watched metrics in homebuilder results because it captures how much pricing power a builder retains once construction costs and buyer incentives are absorbed.

Wall St Engine summarized the quarter in a post on X:

KB HOME $KBH Q3'26 EARNINGS HIGHLIGHTS 🔹 Revenue: $1.3B; -20% YoY 🔹 EPS: $1.05 (Est. $0.88) 🟢; -35% YoY 🔹 Housing Gross Profit Margin: 16.5%; -170 bps YoY 🔹 Homes Delivered: 2,732; -19% YoY Affirms FY26 Guide: 🔹 Deliveries: 10,500-11,000 homes 🔹 Housing Revenues:… pic.twitter.com/zQQiPLOIqp

— Wall St Engine (@wallstengine) September 22, 2026

The post also showed earnings per share down 35% year over year and housing gross profit margin down 170 basis points from a year earlier, underscoring a broad year-over-year slowdown. Housing revenues declined 20% to $1.29 billion and deliveries fell 19% to 2,732 homes, while net orders slipped 12%, a sign that demand remains soft even as profitability topped estimates. KB Home affirmed its full-year fiscal 2026 guidance of ,500 to 11,000 home deliveries.

Margin Guidance Overshadows the Earnings Beat

The problem for investors was the outlook. KB Home said it expects fourth-quarter housing gross margin to land between 16% and 16.6%, below the roughly 17.2% Wall Street had been looking for.

The company also lowered its full-year gross margin guidance to a range of 16% to 16.2%, compared with its previous forecast of 16.1% to 16.5%. That earlier, higher range had been set out in the guidance issued alongside second-quarter results. Guidance revisions tend to draw outsized attention in the homebuilding sector because a single margin range folds together management's assumptions on pricing, incentives, product mix and input costs for the quarters ahead.

Management attributed part of the pressure to slower sales in Southern California. As a result, fewer higher-priced homes from the region are now expected to close during the fourth quarter.

High Mortgage Rates Remain the Main Risk

KB Home executives said higher mortgage rates continue to pressure affordability and make prospective buyers more cautious. U.S. homebuilder sentiment also fell to a 12-month low in September, as financing costs and weaker demand weighed on the sector. Sentiment surveys are tracked as a forward gauge for the housing industry, since they reflect how builders judge current sales conditions and the traffic of prospective buyers.

Resale inventory has increased as well, giving potential buyers more alternatives to new construction. At the same time, management pointed to rising fuel, tariff and general inflation costs heading into the fourth quarter.

The built-to-order strategy may help protect margins better than speculative building, because homes are more closely matched with buyers before construction begins. Still, that advantage cannot fully offset weak affordability and slower demand.

A key caveat is that KB Home remains highly exposed to mortgage rates and regional housing conditions. If rates stay high or buyer caution deepens, the company could face further pressure on volumes, incentives and margins through the remainder of 2026.

For now, the market is looking past the earnings beat and focusing on the softer outlook. The markers to watch from here are whether fourth-quarter results land within the new 16% to 16.6% margin range, whether the delayed Southern California closings arrive as scheduled, and whether full-year deliveries stay on track for the affirmed 10,500-to-11,000 target. KB Home's next challenge is proving that its built-to-order model can defend profitability through a difficult housing environment.