According to the recent Freddie Mac PMMS report, the average 30-year fixed mortgage rate is 6.6% as of July 2026. While this number may seem daunting at first glance, the story changes when looking at it by credit score ranges. For scores above 780, the rate is 6.59%, for the 760 range it is 6.66%, for the 740 range it is 6.75%, and for the 700 range it is 6.91%. For those looking to buy a home in Fairfax, it's important to consider this gap in relation to down payments to get a clearer picture.

Fairfax is part of Fairfax County, so statistics are often assessed at the county level rather than by individual city. The median sale price over the last three months (up to May 2026) is approximately $813,000 (Redfin, Fairfax County). The amount prepared for a down payment has both advantages and burdens. Starting with 3.5%, which is $28,455, results in the lightest initial cash burden, but increases the loan principal and incurs PMI. Filling in 20%, which is $162,600, exempts PMI but requires a longer time to save that amount. The middle ground of 5% ($40,650) or 10% ($81,300) can be seen as a compromise between the two burdens.

The benefits of keeping the down payment low are clear. It allows entry into the market without waiting long to accumulate a large sum. However, a larger loan amount increases monthly payments and also raises the DTI ratio. According to the Consumer Financial Protection Bureau (CFPB) guidelines, the backend DTI should be below 43%, and conventional loans typically range between 36% and 45%. While increasing the down payment to reduce the loan principal is the most direct way to lower DTI, it can also extend the preparation period, which can be a disadvantage.

Support at the state level in Virginia is also worth considering. Virginia Housing's HOMEownership down payment assistance program provides support of 10% to 15% of the purchase price without repayment if income requirements are met, along with $2,500 for closing costs. The Virginia Housing Plus Second Mortgage covers 3% to 5% in a second mortgage format, reducing the initial cash burden. However, it's important to note that these support programs have income caps and lender requirements, so they may not apply to all applicants.

Fairfax is also a popular area for Korean families due to its school district. While school district ratings can be referenced through GreatSchools or Niche, it's advisable to check the actual schools assigned to a specific address, as district boundaries are often adjusted. Given the high preference for school districts, properties tend to sell quickly, so making an offer without pre-approval can put you at a disadvantage in a competitive market.

If moving from another state, budgeting based on the previous state's standards may lead to missing important details. Virginia imposes personal property tax on vehicles, so this cost should be accounted for in addition to property taxes. If down payment funds are being provided by family, preparing a gift letter and documentation of the source of funds in advance can help prevent delays in the approval process.

One of the most basic ways to increase approval rates is to obtain pre-approval first. It's beneficial to have stable income documentation ready, such as tax returns and pay stubs from the last two years, and to avoid opening new credit cards or auto loans before closing. Changing jobs, especially outside the same industry, can negatively impact the approval process, so it may be worth adjusting the timing. The property tax rate in Fairfax County is around $1,122.50 per $100,000 (Fairfax County FY2026 tax rate), which is somewhat higher than in other areas, so this should also be factored into monthly payment calculations. This article is not investment or legal advice, and it's recommended to consult with a loan advisor to review individual circumstances before making any agreements.