The average fixed mortgage rate for 30 years is in the mid to high 6% range. If you are looking for a home in San Diego in 2026, this is a figure worth remembering. However, this number is close to the national average, and the actual rate you receive will vary based on personal conditions.

Let's take a look at how this rate is determined. First, it's the yield on 10-year Treasury bonds. The 30-year fixed mortgage tends to move in tandem with Treasury yields. Second, it's the Federal Reserve's interest rate decisions. When the Fed maintains a tight stance, market rates often remain high. Third, it's the inflation indicators. When signals show that inflationary pressures are easing, rates tend to decrease as well. Fourth, it's the supply and demand in the MBS market.

The 15-year fixed rate is typically about 0.5 to 0.7 percentage points lower than the 30-year fixed rate. While the shorter repayment period reduces total interest burden, it's important to consider that monthly payments will be higher.

The difference between ARM and fixed rates is also clear. An ARM starts with a lower rate during the initial fixed period (5 or 7 years) but adjusts based on market rates afterward. If you plan to hold the property short-term or resell, an ARM may be advantageous, while a 30-year fixed is more stable for long-term residency.

Differences based on credit scores are also significant. A score above 740 typically results in average or favorable rates, while scores in the 620-679 range often receive rates about 1 percentage point higher. Since down payment ratios and DTI are also evaluated, it's difficult to predict outcomes based solely on credit scores.

San Diego has a high proportion of military personnel and biotech industry workers. Buyers eligible for a VA loan may find opportunities for financing without a down payment, so it's important to check if you meet those conditions.

Practical preparations for Korean households include checking credit reports in advance to correct any errors and comparing estimates from at least three lenders. If you can increase your down payment, it can help reduce PMI burdens, and it's wise to avoid new loans or large expenses just before closing.

Future rates may move gradually based on inflation and the Fed's decisions. Rather than trying to predict the exact timing, it's more practical for those preparing to buy a home in San Diego to establish a loan structure that fits their credit and budget under current conditions.