How to Appeal Your Real Estate Tax Assessment: A Step-by-Step Guide

If you just opened your real estate tax bill and felt a jolt of surprise—or maybe frustration—you’re not alone. Once again, property assessments have risen across Northern Virginia, pushing tax bills higher for many homeowners. In Fairfax County, the average residential assessment increased by 6.65% in 2025, with some areas seeing even larger jumps.

This trend isn't unique to Fairfax County:

• Arlington County: The average home assessment increased by 3.7% in 2025.
• Loudoun County: The average single-family home assessment rose by 7.3%, adding over $70,000 in value.
• Washington, D.C.: The median home sale price is projected to increase by 4.7%.

These increases are influenced by rising property values, local budgetary needs, and adjustments to tax rates. As of 2025, the real estate tax rates are:

• Fairfax County: $1.095 per $100 of assessed value
• Arlington County: $1.033 per $100 of assessed value
• Loudoun County: $0.865 per $100 of assessed value

While local governments claim assessments reflect fair market value, they often lag behind actual home prices. Many homeowners notice their homes sell for more than the assessed value, which happens due to the mass appraisal approach used by counties. Instead of evaluating each home individually, counties use general sales trends, often leading to discrepancies between assessed values and true market prices. If you think your assessment is too high, you have the right to appeal—and potentially lower your tax bill.

Understanding the Assessment and Appeal Process

The Department of Tax Administration (DTA) mails assessment notices in mid-February each year. If you disagree with the valuation, you have two levels of appeal:

1. Administrative Appeal with the DTA - Discuss your assessment with county staff and submit an official appeal.
2. Board of Equalization (BOE) Appeal - If unsatisfied with the DTA decision, appeal to the independent BOE for further review.

Be aware that your assessment can increase, decrease, or stay the same after an appeal, so gather strong evidence before proceeding.

Step-by-Step Appeal Process

1. Review Your Assessment Notice

• Check the assessed value and confirm it aligns with your property’s fair market value as of January 1.
• Contact DTA at 703-222-8234 (TTY 711) for clarification.

2. Discuss with DTA (Optional but Recommended)

• Make an appointment or email DTAREDappeals@fairfaxcounty.gov.
• Use the Redfin & Zillow to find comparable property sales to support a lower value.

3. File an Administrative Appeal (Residential Properties)

• Submit your appeal online by early April (check the county website for exact deadlines).
• Gather sales data from 3-4 comparable properties.
• File your appeal at: Fairfax County Online Real Estate Appeal Application.

4. Appeal to the Board of Equalization (BOE) if Necessary

• If dissatisfied with the DTA decision, file with the BOE by early June.
• Submit appeals via email to BoardOfEqualization@fairfaxcounty.gov.
• More details at: Fairfax County Board of Equalization.

Practical Tips for a Successful Appeal

Gather Strong Evidence

• Use the Real Estate Assessment Information Site to collect sales data for similar properties which might not have sold on the MLS.
• Focus on recent sales of homes with comparable location, size, and condition.

Be Confident in Your Data

• The BOE or DTA can increase, decrease, or keep your assessment the same, so ensure your argument is backed by solid evidence.

Meet Deadlines

• DTA appeal deadline: Early April
• BOE appeal deadline: Early June
• Late submissions will not be considered.

Prepare for a Possible Property Inspection

• If you appeal, the county may conduct a field inspection to verify your property details.

Check for Tax Relief Programs

• Seniors (65+), disabled individuals, veterans, and surviving spouses of military or first responders may qualify for exemptions.
• Learn more: Fairfax County Tax Relief.

Potential Downsides and Cautionary Tales

While appealing your assessment can be beneficial, there are some risks and challenges to consider:

1. Your Assessment Could Increase

• If the county finds your property is undervalued compared to similar properties, they may raise your assessment rather than lower it.

2. Impact on Future Sales

• A lower assessment could indicate to potential buyers that the property is worth less than neighboring homes, which might be a disadvantage when selling.

Final Considerations

Pay Your Taxes On Time

• Even if you appeal, property taxes are due in late July (first installment) and early December (second installment) to avoid penalties.

Next Steps if Your Appeal is Denied

• If the BOE denies your appeal, you can file a case in the Circuit Court, but this requires additional legal steps.

If you're feeling overwhelmed by the tax appeal process or unsure where to start, I'm here to help. Contact me for personalized guidance and advice. Good Luck!