How to Check Your Property Value Before Filing a Tax Appeal

If you believe your Georgia property tax assessment may be too high, the first question is usually simple:

Do I need to hire someone right away?

Sometimes the answer is yes. Often, at least at the beginning, the answer is no.

A homeowner can usually do a reasonable first review using public information. Georgia law gives property owners the right to appeal an assessment, and the process does not require hiring an attorney or appraiser just to get started. State guidance also makes clear that the annual notice is where the appeal rights and deadline live, not the later tax bill.

That said, a do-it-yourself review is not the same thing as a professional appraisal.

A homeowner can often figure out whether a county’s value deserves a closer look. A professional appraisal is different. It is meant to produce a supportable opinion of value that can stand up to challenge.

For many homeowners, the best approach is to start with a basic self-check, then decide whether the facts are simple enough to handle alone.

Start with the notice, not the tax bill

Before anything else, pull out the Annual Notice of Assessment.

That notice is not a tax bill. It is the county’s statement of what it believes your property was worth for tax purposes as of the valuation date. It also contains your appeal window and filing instructions. The state’s sample notice explicitly says it is “not a tax bill,” and official guidance ties the appeal rights to that notice.

So if you are trying to decide whether to appeal, the notice is the document that matters first.

What a homeowner can do on their own

A good first review does not require fancy software or a paid subscription.

In many counties, a homeowner can begin with county property records, GIS tools, and the public parcel systems many people know as QPublic (qpublic.schneidercorp.com). State and county materials point owners to those public record systems for property details and parcel information. Several counties also direct homeowners to neighborhood sales and public record searches as part of the review process.

That does not make a homeowner an appraiser. But it does give them enough information to ask a very practical question:

Does the county’s value appear supportable?

That is the real starting point.

A simple DIY checklist

We would frame the first review like this.

1. Check the county’s facts first

Before worrying about sales, make sure the county record is even describing the property correctly.

Look at the basic facts on the tax card or property record:
square footage, bedrooms, bathrooms, basement finish, lot size, age, and other physical details. Official guidance recognizes that record inaccuracies can matter, and multiple counties encourage homeowners to verify these details before deciding what to do next.

If the county has the basics wrong, that alone may justify a closer look.

2. Start close to home

If your property is in an established subdivision or development, start by looking at recent sales in that same development when possible.

Official county guidance strongly supports using recent sales of similar nearby properties as the backbone of value evidence. The safest homeowner version of that rule is simple: start with the most similar homes closest to yours, then widen out only if necessary. The research memo specifically cautions against overstating this as a universal legal rule in every case, but it strongly supports “start close to home when possible.”

That is usually the most sensible first screen anyway.

3. Focus on closed sales, not just listings

Closed sales are usually the strongest public evidence because they show what buyers actually paid.

County materials repeatedly anchor value evidence to sales, especially recent sales of similar homes. Some counties describe recent sale price as the best evidence or next-best evidence. Listings can still be interesting, but they are not the same thing as a completed transaction. The safest way to say it is this: sold comparables usually matter more than asking prices.

If a homeowner builds their whole argument around listings, they are usually on weaker ground.

4. Compare similar homes, not just nearby homes

Not every nearby sale is a useful comparison.

A house down the street may still be a poor comp if it is significantly larger, recently renovated, on a different lot type, or simply appeals to a different buyer. Official materials describe valuation as a comparison process that considers multiple characteristics such as location, condition, size, quality, baths, and basements, not just one number.

That matters because homeowners often compare homes that feel similar from the street but are not actually competitive in the market.

5. Be careful with price per square foot

This is one of the biggest shortcuts people use, and one of the most misleading.

Price per square foot can be one lens, but it is not a reliable standalone answer. Official guidance describes valuation as a multi-factor comparison process, not a single-metric exercise. So, if price per square foot shows something interesting, treat it as a clue, not a conclusion.

A nicer house, a better floor plan, a finished basement, a superior lot, or a recent renovation can all make that shortcut misleading very quickly.

6. Document things the county may not see

Counties use mass appraisal systems. Those systems are efficient, but they do not always capture property-specific details well.

If your home has deferred maintenance, an outdated interior, functional problems, unusual site issues, or other conditions that are not obvious from the street, those things may matter. The research memo notes that counties acknowledge interior issues can matter and that some situations may require deeper inspection or analysis.

Photos, repair issues, and factual notes can all help a homeowner understand whether the county’s number deserves more scrutiny.

What homeowners often get wrong

A few mistakes show up again and again.

One is confusing the assessment with the tax bill. The article should keep repeating that these are not the same thing, because official sources do.

Another is treating tax frustration as if it were value evidence. Multiple counties explicitly say the appeal is about assessed value and related legal grounds, not simply anger about the tax amount.

Another is assuming a large increase automatically proves the county is wrong. The research cautions against that. Year-over-year increases can be a reason to review the file more closely, but not proof by themselves. They should be treated as a trigger to investigate, not as the whole case.

And finally, many homeowners rely too heavily on what they can see from the street, a Zestimate, or a few cherry-picked sales that “feel right.” That is usually where a DIY review starts to drift off course.

A useful question to ask yourself

After reviewing the public record, recent sales, and obvious differences, a homeowner does not necessarily need to know the exact value of the property.

Often the more useful question is:

What is this property clearly not worth?

That is a practical way to think about it.

If the county’s value appears well above the range suggested by nearby similar sales and the property record has errors or misses meaningful condition issues, the homeowner may be onto something.

If the county’s value still seems supportable after a fair review, then the increase may feel painful without actually being wrong.

That kind of first screen can save time, money, and frustration.

When the facts start getting complicated

This is where homeowners need to be honest with themselves.

Some cases are simple enough for a reasonable first review. Some are not.

The research strongly supports caution in cases involving unique properties, limited comparable sales, complex property characteristics, or situations where mass appraisal may struggle. Counties and assessment guidance also note that the process becomes harder when the property is less typical or the data is thin.

In plain English, the facts usually get more complicated when the property involves:

• acreage

• rural land

• unusual homes

• mixed influences from new development

• very limited recent sales

• major differences in condition or quality

• situations where public records do not tell the full story

That is often the point where a homeowner may still have a valid argument, but presenting it well becomes harder.

What a professional changes

A homeowner can often do a useful first check on their own.

But a professional appraisal goes further. It is built to support a conclusion with analysis that can withstand serious review. That is a different standard from simply gathering a few sales and saying, “this seems too high.” The research memo specifically supports framing a DIY review as a first screen, not a substitute for a defensible appraisal in a contested case.

That difference matters most when the county disagrees.

A homeowner may identify a credible issue on their own and still get nowhere because the evidence is thin, the comparison logic is weak, or the property is more nuanced than it first appears. A trained appraiser not only helps build a stronger foundation, but can also stand behind the analysis if the process becomes more formal.

That does not mean every homeowner needs an appraisal.

It does mean there are cases where support matters.

A final thought for homeowners

We believe many homeowners can do a reasonable first review of their property value before deciding whether to file a tax appeal.

That first review should be practical:
start with the notice, verify the county’s facts, look at recent similar sales, and ask whether the county’s value appears supportable.

For some properties, that may be enough to move forward with confidence on your own.

But if the facts get complicated, the data is thin, or the county’s logic is harder to challenge than it first appears, that is usually the point where professional help becomes more valuable.

If you have questions about a recent assessment or want help deciding whether the facts justify a closer look, Real Estate Appraisal Services, Inc. may be able to help. Trusted Values is the public brand of Real Estate Appraisal Services, Inc., serving homeowners across much of Metro Atlanta.