The ongoing tensions between the U.S. and Iran are affecting American homebuyers in an unexpected way. Construction material costs have jumped 8 percent since negotiations stalled last month, according to builders and suppliers tracking global markets. Higher steel and lumber prices are making new homes more expensive to build.
The uncertainty comes because ships carrying goods through the Strait of Hormuz, a critical ocean passage near Iran, face disruption risks. This waterway handles about 20 percent of the world's oil trade. When international conflict creates shipping delays, it costs more to move construction materials across oceans, which gets passed along to builders and eventually to families buying homes.
Regular homebuyers and construction companies are feeling this squeeze most directly. A family saving for a down payment now needs 15,000 to 20,000 dollars more for the same house than they would have needed three months ago. Small builders who rely on affordable materials are delaying projects or raising prices on customers already signed up for work.
Mortgage lenders are also watching closely because these higher costs affect home values and building timelines. If negotiations between President Trump's administration and Iran succeed, shipping routes could stabilize and material costs could drop within weeks. If tensions escalate, homebuilders warn they may freeze new construction starts until prices become predictable again.