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Rising tensions involving Iran are pushing fuel costs higher, stoking inflation concerns and adding another layer of uncertainty to already volatile financial markets. Those same dynamics are beginning to filter into the U.S. housing sector, where capital costs, supply trends and construction inputs are all coming under renewed pressure.
A recent brief from Marcus & Millichap indicates that the current environment of instability and confusion is weighing on housing at least in the near term. Borrowing costs for homebuyers have moved up, with The Wall Street Journal reporting that the average 30-year fixed mortgage rate reached 6.57% as of April 2, a new six-month high. The elevated cost of debt is emerging just as more product comes to market, creating a more complex backdrop for households and investors.
On the supply side, Marcus & Millichap notes that existing-home inventory in February 2026, the most recent period with available data, climbed to its highest level since 2020. This additional resale inventory is helping to slow home price growth, but it also arrives at a moment when higher mortgage rates may reduce the pool of willing or qualified buyers. The combination of more choices and more expensive financing is reshaping how demand expresses itself and could lead some households to delay or reconsider purchases.
Whether mortgage rates stay elevated will depend in part on how long oil prices remain high. Persistently expensive fuel could reinforce inflation pressures, increasing the odds that interest rates remain higher for longer. In that scenario, potential homebuyers might pull back further, affecting transaction velocity and the broader housing activity pipeline.
Construction trends are also showing a divide by product type. The brief points out that single-family completions have held relatively steady, even as the macro backdrop has grown more challenging. In contrast, multifamily completions have dropped to their lowest levels since the late 1980s, signaling a meaningful slowdown in new rental supply reaching the market.
Developers are also contending with rising input costs. Building materials prices increased 7% year over year in February, tightening project margins and potentially reducing the feasibility of some planned starts. Marcus & Millichap notes that higher oil prices could add further strain on construction costs and logistics, increasing the risk of fewer housing starts and more frequent project delays. Taken together, costlier debt, greater resale supply, softer demand and a bifurcated construction pipeline are shaping a more cautious near-term outlook for U.S. housing.
The post Iran Tensions Drive Up Oil Prices, Adding New Strains to U.S. Housing and Mortgage Rates appeared first on CRE Market Beat.
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