How to Appeal Your Property Tax Assessment in the D.C. Metro Area
If you recently received your property tax assessment and think it’s too high, you may have the option to appeal. Property tax assessments are used to determine how much you owe in taxes each year, and an inaccurate valuation could mean paying more than your fair share.

In the Washington, D.C., metro area, property owners in the District, Maryland, and Virginia each have different processes for appealing assessments. This guide will walk you through the basics of how assessments work, when you should consider an appeal, and the steps to challenge an incorrect valuation in D.C., Northern Virginia, and Maryland suburbs.
Understanding Your Property Tax Assessment
Local governments assess property values based on market trends, recent sales of similar properties, and any improvements made to your home. This assessed value determines your annual property tax bill. However, assessments aren’t always accurate, and mistakes can happen, such as:
- Overestimating your property’s value
- Misidentifying property characteristics (e.g., incorrect square footage)
- Failing to account for declining market conditions
If you believe your assessment is too high, an appeal may help lower your property taxes.

General Steps to Appeal a Property Tax Assessment
- Review Your Assessment Notice – Check for any discrepancies in your property details.
- Research Comparable Properties – Find recent sales of similar homes in your area to support your case. Properties on the Potomac can assist with this.
- Check for Errors – Ensure there are no mistakes in the assessment records.
- File an Appeal by the Deadline – Each jurisdiction has specific deadlines and processes for appeals.
- Present Evidence – Be prepared to provide documentation proving your property is over-assessed.
Now, let’s look at how the appeal process works in D.C., Northern Virginia, and Maryland suburbs.
Appealing Your Property Tax Assessment By Location: Click on the location to get additional details on how and where to file an appeal.
Washington, DC
Steps to Appeal:
- Check Your Assessment – The Office of Tax and Revenue (OTR) mails annual assessments in late February or early March.
- File a First-Level Appeal – You must submit your appeal to OTR by April 1 of the same year. The appeal can be filed online, by mail, or in person.
- Attend a Hearing (If Necessary) – If your initial appeal is denied, you can request a second-level review with the Real Property Tax Appeals Commission (RPTAC).
- Take Your Case to Court – If you’re still unsatisfied with the decision, you can file a case with the D.C. Superior Court.
Where to File:
Online: OTR Real Property Tax Appeals
Mail: Office of Tax and Revenue, 1101 4th Street, SW, Suite 550W, Washington, D.C. 20024
Northern Virginia: Arlington County, Fairfax County, Alexandria, Loudoun County, Prince William County
Steps to Appeal:
- Review Your Notice – Assessment notices are typically sent in late February.
- Request an Informal Review – Contact your local tax assessor’s office to discuss potential errors. This step is optional but may lead to a quick resolution.
- File a Formal Appeal – Submit an appeal to the Board of Equalization (BOE) by varied deadlines (usually April-May, depending on the county).
- Prepare for a Hearing – Provide sales data, appraisals, and other supporting evidence.
Where to File:
- Arlington County – Department of Real Estate Assessments
- Fairfax County – Department of Tax Administration
- Alexandria City – Real Estate Assessments Office
- Loudoun County – Commissioner of the Revenue
- Prince William County – Real Estate Assessments Division
Maryland: Montgomery County, Prince George’s County, Frederick County
Steps to Appeal:
- Review Your Assessment Notice – Maryland properties are reassessed every three years. Notices are sent out in late December for properties up for reassessment the following year.Â
- Request a Reassessment (If Necessary) – If you believe your assessment is too high, you can file an appeal within 45 days of receiving your notice.
- File an Appeal with the Supervisor of Assessments – If an informal review doesn’t resolve the issue, submit a formal appeal to the Property Tax Assessment Appeal Board (PTAAB).
- Take Your Case to the Maryland Tax Court – If necessary, you can escalate your appeal beyond the PTAAB.
Where to File:
- Montgomery County – Department of Finance
- Prince George’s County – SDAT Real Property Division
- Frederick County – Maryland Department of Assessments and Taxation

Tips for a Successful Appeal
- Meet Deadlines – Each jurisdiction has strict filing deadlines, so don’t miss your opportunity to appeal.
- Use Comparable Sales Data – Provide recent sales of similar properties in your neighborhood to prove overvaluation.
- Highlight Property Deficiencies – Document any structural issues, outdated systems, or factors that negatively affect your home’s value.
- Get a Professional Appraisal – Hiring an independent appraiser can strengthen your case.
Final Thoughts
A successful property tax appeal can save you money, but it requires research, preparation, and sometimes persistence. If you believe your home is over-assessed, following the steps outlined above for your specific jurisdiction can help you navigate the process.
If you’re looking for more guidance on property values or considering buying or selling in the D.C. metro area, our experienced team is here to help. Contact Tiffany Henkel at 703-989-7452 today!














































