Mortgage rates are climbing again, creating new affordability pressure for buyers across San Diego County as borrowing costs continue rising alongside inflation concerns and bond market volatility. The shift is making homeownership more difficult for many residents, even as housing demand remains strong throughout the region.
Recent market activity shows 30-year mortgage rates moving above 6.5 percent, with financial analysts warning rates could continue increasing if inflation remains elevated.
Mortgage Rates Are Reshaping Buyer Activity Across San Diego
Higher borrowing costs are changing how buyers approach the market in 2026. Many residents who previously qualified for larger loan amounts are now adjusting budgets, delaying purchases, or remaining in rental housing longer than expected.
The recent increase in Treasury yields has pushed mortgage rates upward across the country, reversing the ultra-low financing conditions that fueled much of the post-pandemic housing activity. As rates rise, affordability gaps are becoming more noticeable in higher-cost markets like San Diego County.
Key mortgage market trends
- 30-year mortgage rates climbed above 6.5 percent
- 10-year Treasury yields approached 4.6 percent
- Inflation concerns continue pressuring borrowing costs
- Buyer affordability remains constrained in many markets
Affordability challenges are becoming increasingly complex across San Diego County, especially as rising borrowing costs collide with already elevated home prices. We recently broke down how pricing pressure and income gaps are reshaping the local market in our deeper analysis of the 2026 San Diego housing market in our blog here.
Low Inventory Continues Pressuring San Diego Housing
One of the biggest challenges facing buyers is the ongoing shortage of available housing inventory. Many existing homeowners remain locked into mortgage rates below 4 percent, reducing the incentive to sell and limiting the number of homes entering the market.
This dynamic continues restricting inventory throughout San Diego County, where demand remains elevated despite slower overall sales activity. Buyers entering the market today are often competing for a limited pool of listings while navigating significantly higher monthly payments than just a few years ago.
The result is a market where affordability pressures persist even as overall transaction volume slows.
The True Cost of Buying in San Diego
Median home price & monthly payment · Q4 2025
Buyer Confidence Is Becoming More Sensitive to Interest Rates
Current affordability pressures include
- Higher monthly mortgage payments
- Rising insurance and living costs
- Increased sensitivity to interest rate fluctuations
- Reduced purchasing power compared to prior years
Why San Diego Remains Different From Other Markets
While some lower-cost regions across the country are experiencing softer demand, coastal markets like San Diego continue operating under different supply and demand dynamics. Limited land availability, strong long-term desirability, and ongoing population demand continue supporting housing values despite elevated borrowing costs.
This creates a unique environment where both buyers and sellers remain cautious, yet pricing resilience continues in many neighborhoods throughout the county.
Coastal California markets have historically responded differently to interest rate cycles than more inventory-heavy regions because constrained supply often limits dramatic price corrections.
The Financing Landscape Could Continue Changing in 2026
Financial markets continue watching inflation trends, Federal Reserve policy decisions, and global economic instability closely as mortgage rates remain volatile. Analysts increasingly believe rates may stay elevated longer than many buyers initially expected.
At the same time, housing demand throughout San Diego County remains structurally strong due to ongoing inventory shortages and limited development capacity in many established neighborhoods.
For buyers, the current environment reinforces the importance of long-term financial planning, payment comfort, and neighborhood-specific strategy rather than trying to time short-term rate movements.
