The average 30-year fixed mortgage rate announced by Freddie Mac last week is around 6.6% (ranging from 6.55% to 6.72%, as of July 2026, Freddie Mac PMMS). Compared to the rapid increases of the past few years, this is a stable level, but it remains a key variable that affects monthly payments for those looking to buy their first home. If you are searching for a home in San Diego, this single number can significantly impact your entire budget.

The median sale price in San Diego County has recently averaged around $922,000 (as of June 2026, Redfin). This means that if you are preparing a 20% down payment, you will need about $184,000 in cash, with the remaining $737,600 financed through a loan. At a 6.6% interest rate, the principal and interest alone would amount to about $4,700 per month. Conversely, if you choose an FHA loan with a 3.5% down payment, your initial cash burden would decrease to around $32,000, but the loan principal increases, raising the monthly payment to around $5,700.

The criteria for choosing a loan type are your credit score and available cash. An FHA loan allows you to start with a 3.5% down payment if your credit score is 580 or higher, and if your score is between 500 and 579, a 10% down payment is required (FHA.com). Conventional loans, on the other hand, can start at 3% for first-time homebuyers or those with an area median income of 80% or less, though it is common to prepare around 5%. If your down payment is less than 20%, private mortgage insurance (PMI) will be required, but this cost is eliminated if you put down 20% or more.

You should also factor in the annual property tax. The average effective tax rate for the entire state of California is around 0.71% (Tax Foundation, as of 2026). However, depending on local bonds or special assessments, the actual burden may be higher, so it is advisable to check the exact tax rate for the address you are considering with the county assessor's office.

First-time homebuyers should also consider the MyHome Assistance Program from the California Housing Finance Agency, or CalHFA. This program offers a second mortgage to assist with down payments or closing costs, providing up to about 3% of the purchase price or appraised value, with repayment deferred until the home is sold or refinanced (CalHFA). However, there are requirements for first-time homebuyer status, income limits, and completion of homebuyer education.

During the pre-qualification stage, the debt-to-income ratio (DTI) is also evaluated. A lower DTI can be advantageous for loan limits and interest rate conditions, so it is wise to check this with your loan officer before making an offer.

If you are a Korean family that values school districts, areas like University City or Carmel Valley, which have high GreatSchools ratings, are often mentioned. However, school district boundaries change frequently, so it is important to verify the exact assigned school for any property before purchasing.

If you are moving from another state, approaching the situation with the mindset from your previous residence may lead to missing important details. For example, if you are coming from states like Texas or Georgia, where property taxes are high but there is no income tax, remember that California has a higher income tax burden and relatively lower property taxes.

It is realistic to estimate closing costs between 2% and 5% of the purchase price. This includes inspection fees, appraisal fees, title insurance, and escrow fees, and there may be room for negotiation on individual items.

This article is not investment or legal advice, and it is recommended to consult with a loan officer or real estate professional to confirm conditions that suit your personal situation before making any agreements.