How to Appeal Your Property Taxes in Maryland

How to appeal your property taxes in Maryland

To appeal your property taxes in Maryland, you file an appeal of your assessment with the Maryland State Department of Assessments and Taxation (SDAT) within the window printed on your assessment notice, then present evidence — such as comparable sales and property-condition details — showing that the state's estimate of your home's market value is too high. Maryland offers a tiered appeal process, so if you disagree with the first decision you can escalate to a higher review level.

Your property tax bill is driven by two things: your property's assessed value and the tax rate set by your county or municipality. You generally cannot appeal the tax rate, but you can appeal the assessed value. If you can show the assessment overstates what your property would sell for, a successful appeal can lower the value your taxes are calculated against.

How property assessment works in Maryland

Maryland is unusual in that property assessments are handled at the state level by SDAT, not by individual county assessors. SDAT reviews properties on a rolling cycle, so only a portion of properties in each area are reassessed in any given year. When your property is reassessed, SDAT mails you an assessment notice showing the new estimated value.

That notice is the key document. It tells you:

• The new total value SDAT has assigned to your property.
• How that value compares to the prior assessment.
• The window and instructions for filing an appeal.

Because Maryland uses a multi-year reassessment cycle, the timing and options for appealing can differ depending on whether you just received a new notice or want to challenge an existing assessment between cycles. Read your specific notice — it governs your situation.

Always confirm current procedures, forms, and time limits on the official SDAT website or by contacting your local SDAT assessment office. Deadlines and rules can change, and they can vary by situation.

The three levels of appeal in Maryland

Maryland provides a tiered structure. You do not have to go through every level — most homeowners resolve their case at the first stage — but the option to escalate exists if you disagree with a decision.

1. Supervisor's level (first-level review)

The first stage is a review with the local SDAT assessment office. This can often be handled in writing, by phone, or in person. Here you make your case directly to an assessor and submit your supporting evidence. Many disputes are resolved at this level.

2. Property Tax Assessment Appeal Board (PTAAB)

If you disagree with the first-level decision, you can appeal to the Property Tax Assessment Appeal Board for your county. PTAAB is an independent board that hears your case in a more formal hearing setting. You present your evidence, and SDAT presents theirs.

3. Maryland Tax Court

If you still disagree after PTAAB, the next step is the Maryland Tax Court, an independent administrative body. Despite the name, its hearings are generally less formal than a traditional courtroom, though many homeowners at this stage consult a professional.

Step-by-step: how to file your appeal

1. Read your assessment notice carefully. Note the assessed value and the exact appeal window and filing instructions printed on it. Deadlines are typically a set number of days from the date on the notice — check your own notice rather than relying on a general figure.
2. Decide whether the assessment is actually too high. Ask yourself: could I realistically sell this property for the value SDAT assigned? If the honest answer is no, you likely have grounds.
3. Pull your property record. Review SDAT's record for your property and check for factual errors — wrong square footage, incorrect number of bedrooms or bathrooms, a finished basement that isn't finished, or acreage that's off. Factual errors are among the strongest and simplest grounds for a reduction.
4. Gather comparable sales ("comps"). Find recent sale prices of similar nearby homes — similar size, age, condition, and location. Sales that closed near the assessment date and came in below your assessed value are your best evidence.
5. Document condition issues. Photograph and note anything that lowers value: deferred maintenance, structural problems, an outdated interior, drainage issues, or negative features near the property.
6. File within the window. Submit your appeal following the method your notice specifies. Keep a copy and proof of the date you filed.
7. Present your case. At the review or hearing, calmly walk through your evidence. Focus on market value and factual accuracy — not on how much you dislike the tax bill.
8. Escalate if needed. If the outcome doesn't reflect your evidence, use the next appeal level.

Evidence checklist

Bring or submit as much of the following as applies:

• Your assessment notice.
• A copy of SDAT's property record card, with any factual errors marked.
• Three to five comparable sales, ideally close in time, size, and location.
• Photos of condition problems or negative features.
• Repair estimates or inspection reports for significant defects.
• A recent independent appraisal, if you have one (not required, but persuasive).
• Any listing history showing the home failed to sell at or above the assessed value.

Common mistakes to avoid

• Missing the deadline. The appeal window is strict. Confirm it on your notice and file early.
• Arguing the tax rate or your bill. The appeal is about the property's value, not the rate or the total amount owed.
• Weak or mismatched comps. A larger, renovated home a mile away is not a strong comparable. Closer, more similar properties carry more weight.
• Emotion over evidence. "My taxes went up too much" is not a valid argument. "Similar homes sold for less" is.
• Assuming an appeal raises your value. In most cases an appeal reviews the existing value; understand the process for your situation before deciding, and read your notice.

When to consider professional help

Many homeowners handle a first-level appeal on their own, especially when the issue is a clear factual error or an obvious gap between the assessment and recent comparable sales. For higher-value properties, complex valuations, or escalation to PTAAB or the Maryland Tax Court, some owners bring in a licensed appraiser, an attorney, or a property-tax consultant. Weigh the potential tax savings against the cost of help.

Bottom line

Appealing a Maryland property assessment is a structured, homeowner-friendly process: verify the facts on your notice, prove your home's market value with solid comparable sales and condition evidence, file within your window, and escalate through SDAT's tiered system if needed. The strongest appeals are built on accurate records and realistic comparisons — not frustration with the bill. Always verify current forms, contacts, and deadlines with SDAT before you file.