As of late February 2026, a war with Iran would likely trigger two opposing effects on mortgage rates for Boston condos, creating significant short-term volatility.

1. The “Flight to Safety” (Downward Pressure)

In the immediate wake of a major conflict, investors typically flee volatile stocks and move their capital into U.S. Treasury bonds, which are seen as a “safe haven”.

Bond Yields: As demand for bonds increases, their prices rise and their yields (interest rates) fall.
Mortgage Link: Because 30-year fixed mortgage rates closely track the 10-year Treasury yield, this “flight to safety” often causes an initial, temporary drop in mortgage rates.
Current Context: This phenomenon was recently observed in February 2026, where geopolitical and tariff-related uncertainty helped push Massachusetts mortgage rates down into the low 6% or high 5% range.

2. The Inflation & Energy Shock (Upward Pressure)

If a war leads to a sustained conflict, the initial rate drop could quickly reverse due to rising costs.

Oil Prices: Iran’s proximity to the Strait of Hormuz means a conflict could disrupt global oil supplies, causing energy prices to spike.
Inflation: High energy costs feed into broader inflation. If inflation remains “hot,” the Federal Reserve may keep interest rates elevated or even raise them to cool the economy, which would push mortgage rates higher.
Refinancing: While a temporary dip might allow some to refinance, lenders may become more cautious and tighten their pricing if they anticipate long-term instability.

Current Boston Market Status (February 28, 2026)

For a condo buyer in Boston today, the baseline is already shifting:

Average Rates: Current 30-year fixed rates in Massachusetts are hovering around 6.02% to 6.11%.
Local Impact: Boston’s high-value condo market is sensitive to these fluctuations. While a war-induced rate dip could increase affordability, the accompanying economic uncertainty often makes buyers hesitant to commit to large financial obligations.

Peace be with you