Getting a Real Estate Agent Letter for Your Property Tax Appeal
TL;DR
A comparative market analysis (CMA) from a real estate agent provides free comparable sales data in a professional format. Many agents will prepare one at no charge, hoping to build a relationship. The CMA includes recent sales, pending sales, and active listings. While not as authoritative as a professional appraisal, it carries more weight than your own research because it comes from a licensed professional with MLS access.

A Comparative Market Analysis is a report prepared by a real estate agent showing recent sales, pending sales, and active listings for homes similar to yours. Below, we cover getting a Real Estate Agent Letter for Your Property Tax Appeal in full.
Keep your tone professional and factual. Review boards respond to evidence, not complaints. If you walk in with 3 strong comparable sales and a calm, organized presentation, you are already ahead of most appellants.
What Is a CMA?
A Comparative Market Analysis is a report prepared by a real estate agent showing recent sales, pending sales, and active listings for homes similar to yours. Agents use CMAs to help sellers price homes, but the same data works for tax appeals.
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
How to Get a Free CMA
- Contact 2-3 local real estate agents
- Explain that you are preparing a property tax appeal and need comparable sales data
- Ask if they would prepare a CMA for your property
- Many agents will do this for free, as it builds goodwill and could lead to a future listing
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
What a Good CMA Includes
- 3-5 recent comparable sales with full details
- Sale prices, dates, square footage, and property features
- Estimated market value of your home
- The agent's professional opinion on your home's condition and value
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
CMA vs. Appraisal for Tax Appeals
| Factor | Agent CMA | Professional Appraisal |
|---|---|---|
| Cost | Usually free | $300-$500 |
| Weight with board | Moderate | High |
| MLS data access | Yes | Yes |
| Certified opinion | No | Yes |
| Interior inspection | Sometimes | Yes |
The appeal process is designed to be accessible to regular homeowners, not just attorneys and tax professionals. You do not need to hire anyone to file. The key is preparation. Gather your evidence before the hearing, organize it clearly, and practice presenting your case in under 10 minutes. Lead with comparable sales, then cover any property record errors, and finish with photos or documentation of condition issues.
Keep your tone professional and factual. Review boards respond to evidence, not complaints. If you walk in with 3 strong comparable sales and a calm, organized presentation, you are already ahead of most appellants.
Getting the Agent's Support Letter
Ask the agent to write a brief letter on their letterhead stating their opinion of value and the comparable sales that support it. This professional format adds credibility to your appeal packet.

Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
Your Next Steps
Do not let this information sit. Take action this week:
- Review your most recent assessment notice. Pull it out and check every line. Look for errors in square footage, lot size, bedroom count, and property features. Mistakes here are more common than most homeowners realize.
- Pull comparable sales data. Find 3 to 5 similar properties near you that sold recently. If they sold for less than your assessed value, you have the foundation of a strong appeal.
- Check your exemption status. Contact your county assessor's office and confirm which exemptions are currently applied to your property. Many homeowners qualify for exemptions they have never filed for.
- Set a deadline reminder. Find your appeal deadline and put it on your calendar with a 2-week advance warning. Missing the deadline costs you a full year of potential savings.
Why Most Homeowners Overpay
Studies consistently show that a large percentage of residential properties are over-assessed. The Lincoln Institute of Land Policy found that roughly 40% of assessments are off by more than 10%. That is not a rounding error. On a $350,000 home, a 10% overvaluation means you are paying taxes on $35,000 of value that does not exist.
The reason is simple: assessors use mass appraisal models to value thousands of properties at once. They cannot inspect every home individually. The models rely on averages, which means homes that are below average in condition, location, or desirability often get assessed too high. If your home has any characteristics that reduce its value compared to the average home in your area, your assessment may be inflated.
The only way to fix this is to check your assessment yourself. Compare it to actual sales of similar properties. If the numbers do not match, file an appeal. The process exists for exactly this purpose, and homeowners who use it save an average of $1,000 to $3,000 per year.
Appealing does not increase your assessment. In most jurisdictions, the review board can only lower your value or leave it unchanged. There is no downside to filing a well-prepared appeal.
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Frequently Asked Questions
How can a real estate agent's letter help with a property tax appeal?
A comparative market analysis (CMA) from a real estate agent provides free comparable sales data in a professional format. Many agents will prepare one at no charge, hoping to build a relationship. The CMA includes recent sales, pending sales, and active listings to support your appeal.
What Is a CMA??
A Comparative Market Analysis is a report prepared by a real estate agent showing recent sales, pending sales, and active listings for homes similar to yours. Agents use CMAs to help sellers price homes, but the same data works for tax appeals.
What should I include in a real estate agent's support letter for a property tax appeal?
Ask the agent to write a brief letter on their letterhead stating their opinion of value and the comparable sales that support it. This professional format adds credibility to your appeal packet.
Get Professional Evidence for Your Appeal
Our $79 Evidence Packet provides comparable sales analysis from multiple data sources, formatted and ready for your appeal hearing.