How Real Estate Agents Actually Determine Your Home Value in 2026

Most people search on Google or ChatGPT for “what is my home worth,” see a Zillow number, and assume that is the answer. It is not. Here is the real process I use to build a true home value report, step by step.

I had a client ask me for a market analysis on their home, and it made me think about how many people really do not know what goes into it. They think an agent just checks Zillow, pulls a number, and sends it over. That is not what I do.

Some of what I use is public. Some of it is not. I check what buyers are seeing, what the private data is showing, what the market is doing right now, and then I stack all of it together into one report that actually helps a seller make a smart decision.

Quick answer

  • Pull a Residential Property Report for AVMs and property details
  • Check Realtor.com, Zillow, and Redfin to see what buyers see
  • Use PropWire to review loan info, mortgage history, and equity position
  • Dive into MLS data for the real comp analysis, listing history, and agent remarks
  • Verify tax records, square footage, parcel details, and county data
  • Use ChatGPT with a custom prompt to organize and analyze the data
  • Combine everything into a CMA and seller net sheet

What Is a Comparative Market Analysis

A Comparative Market Analysis, or CMA, is a report that helps estimate what your home could realistically sell for in today’s market. It compares your home to similar homes that recently sold, are active right now, or are already under contract nearby.

It is not the same as an appraisal. An appraisal is done by a licensed appraiser, usually for a lender. A CMA is done by a real estate agent to help you make a pricing decision based on current market activity.

  • A CMA is about real-world pricing
  • It uses recent comps, current competition, and local trends
  • It helps with pricing, timing, negotiation, and net proceeds
  • A strong CMA is not one number from one website

Step 1 - Pull the Residential Property Report

The first place I go is the Residential Property Report. This is where I start building the base of the valuation. It gives me a breakdown of the property, basic home details, and AVMs, which are automated value estimates.

What I look for here:

  • Basic property facts
  • Computer-generated value ranges
  • AVM estimates
  • Ownership and property profile details
  • Anything that looks off before I go deeper

This is a starting point, not the finish line. AVMs can be helpful, but they only know what has been reported. If your kitchen was redone, the roof was replaced, or you enclosed a porch and that never hit the right records, the algorithm may never see it.

Step 2 - Check What Buyers See on Public Sites

This part matters more than people think. I always look at the public sites because that is exactly where your buyers are looking. If I do not know what they are seeing, I cannot guide you the right way.

The public sites I check:

  • Realtor.com for public-facing details and estimated value ranges
  • Zillow for the Zestimate, property facts, and cash offer visibility
  • Redfin for another price point and buyer-facing presentation
  • Any visible pricing gaps that may confuse a seller or a buyer

This is also where I start to see the perception problem. One site says one number. Another says something else. Then the seller is wondering who is right.

The answer is usually this: none of them are the full answer by themselves.

Step 3 - Dig Into PropWire for Loan and Equity Data

This is where I start getting into the inside numbers that really matter to a seller. PropWire helps me pull data that most homeowners are not reviewing on a regular basis.

What I pull from PropWire:

  • Estimated home value
  • Estimated equity position
  • Mortgage balance and loan history
  • Interest rate information
  • Lender information
  • Mortgage and transaction history
  • The numbers I need to begin a seller net sheet

Most sellers are really asking one thing: what do I actually walk away with?

That is why this step matters. You can have a sale price in mind, but if you do not know what is owed on the home and what the selling costs look like, you still do not know your real number.

Step 4 - Dive Into the MLS for Agent-Level Details

Then we jump into the MLS. This is where the real work starts. The MLS is where agents get the detailed information that most public sites do not show.

What the MLS gives me:

  • Comparable sold properties
  • Active listings that will compete with your home
  • Pending and under contract listings that show current buyer behavior
  • Days on market
  • Price drops and listing history
  • Agent-only remarks
  • Concessions and deal structure details
  • Property details that may not show publicly
  • The best comps to support a pricing range

A real CMA is built here. I am not just looking for homes that sold nearby. I am looking for homes that actually compare.

That means I compare things like:

  • Square footage
  • Age of the home
  • Lot size
  • Condition
  • Updates and finish level
  • Neighborhood and school zone
  • Street placement and traffic feel
  • How recently the comp sold

Best practice is simple. I want several sold comps, a few actives, and I want to know what is pending so I can see what buyers are doing right now, not just what they did three months ago.

Step 5 - Review the Tax Report

Inside the MLS, I also review the tax report. This is another layer that helps me verify what I am seeing.

What I verify in the tax report:

  • County-assessed value
  • Parcel ID
  • Legal description
  • Lot size
  • Year built
  • Recorded square footage
  • Tax history
  • Anything that does not line up with the public data

This matters because small mismatches can create big problems. If one source says your home is 2,200 square feet and another says 1,950, that changes the pricing picture quickly. The details matter.

Step 6 - Use AI to Analyze Everything

Last but not least, I use ChatGPT with a custom master prompt that I built for property analysis. This is where I can take everything I gathered and turn it into a cleaner, more useful report.

How I use AI in this process:

  • Organize the property data into a clean structure
  • Compare the numbers across multiple sources
  • Build presentation talking points for the seller
  • Map out pricing strategy options
  • Spot questions that still need to be answered
  • Pull together ideas around migration, relocation, and buyer behavior
  • Make the final report more helpful and easier to understand

AI does not replace the agent. It makes the agent faster, more organized, and better prepared. I still review the numbers. I still look at the comps. I still use my judgment.

AI and real estate data GIF

Why Zillow Alone Is Not Enough

Let me be clear. Zillow is not useless. I look at it too. But it is a starting point, not the final answer.

Here is why one public estimate is not enough:

  • It is based on an algorithm, not a live walkthrough
  • It may miss upgrades, repairs, additions, or deferred maintenance
  • It cannot fully read neighborhood differences street by street
  • It does not build you a pricing strategy
  • It does not tell you how to position the home against live competition
  • It does not tell you your net proceeds
  • It does not replace local market judgment

On a $400,000 home, a roughly 7% miss can mean about a $28,000 gap. That is a big enough gap to matter.

Price too high and you sit. Price too low and you leave money on the table. Neither one is the plan.

What a Full Market Analysis Includes Beyond Price

Most homeowners ask, “What can I sell it for?” Fair question. But a real report should give you a lot more than that.

What I include in a full analysis:

  • Estimated value range
  • Best list price strategy based on your goals
  • Comparable sold homes
  • Current active competition
  • Pending activity and buyer momentum
  • Average days on market
  • List-to-sale price ratios
  • Absorption rate
  • Inventory level in your area
  • Migration and relocation trends when relevant
  • Seller net sheet
  • Strategy recommendations based on timeline, condition, and goals

That is the difference between a quick opinion and a real game plan.

Pro Tips for Homeowners Getting a Home Valuation

  • Do not rely on one website
  • Compare Zillow, Realtor.com, and Redfin and notice the gaps
  • Ask your agent what tools they actually use
  • Ask how many comps they reviewed
  • Ask whether they included active, pending, and sold listings
  • Make sure your bedroom count, bath count, and square footage are correct online
  • Keep a list of upgrades ready before requesting a valuation
  • Know the difference between market value and what you net
  • Do not hire the agent who just gives the highest number
  • Hire the agent who gives the clearest process and the strongest reasoning
  • A five-minute phone estimate is usually a guess, not a strategy

Frequently Asked Questions

1) What is a Comparative Market Analysis?

A CMA is a report prepared by a real estate agent that compares your home to similar homes that sold, are active, or are pending nearby to estimate a realistic value range.

2) Is a CMA the same as an appraisal?

No. A CMA is an agent pricing analysis. An appraisal is a formal lender-focused valuation done by a licensed appraiser.

3) How accurate is Zillow?

It can be helpful as a starting point, but it is still an estimate. It does not know everything about your updates, condition, layout, lot appeal, or neighborhood differences.

4) Why does Zillow show one number and an agent shows another?

Because an agent is using more sources, better comps, private MLS data, and real-world judgment that a public algorithm does not have.

5) What is an AVM?

AVM stands for Automated Valuation Model. It is a computer-generated estimate based on available data.

6) How many comps should be in a good CMA?

A strong CMA usually includes multiple sold comps, plus active and pending listings. I like to see enough data to support the story, not just cherry-pick one or two homes.

7) Why do active and pending listings matter?

Active listings show your competition. Pending listings show where buyers are saying yes right now.

8) Why do you review tax records too?

Because details like square footage, parcel info, lot size, and recorded home facts need to match up. Bad records can throw off the value conversation fast.

9) What is a seller net sheet?

It is a breakdown of what you may actually take home after mortgage payoff, commissions, closing costs, and other fees.

10) Why does equity matter in a home valuation?

Because value is only part of the picture. Equity helps show what flexibility you have and what your likely net looks like.

11) Can I do my own CMA?

You can try, but you will not have the same access to MLS data, private listing notes, or the same tools agents use to verify the full story.

12) How long should a real CMA take?

A real one takes time. It depends on the property and market, but a thoughtful report is not something that should be guessed in five minutes.

13) What if my home is unique?

Then the comp work matters even more. Unique homes need better judgment, wider comp research, and stronger pricing strategy.

14) Do upgrades always raise value dollar for dollar?

Not always. Some upgrades help marketability more than exact value. The market decides what buyers are willing to pay for those improvements.

15) Can AI price a house by itself?

AI can help organize, compare, and analyze information faster. It still needs a knowledgeable agent to review the data and make the strategy call.

16) Why do neighborhood and street differences matter so much?

Because two homes can be close together and still sell very differently based on school zones, traffic, lot feel, view, condition, and buyer demand.

17) What if my Zestimate is higher than the CMA?

Then we need to look at the comps and the reasons why. A high online estimate does not help if the real buyer pool will not support it.

18) Do you only do this for Charlotte area homes?

My strongest MLS-backed reports are primarily in the Charlotte and surrounding markets where I have direct access, but I can still help guide the process and talk through strategy with homeowners in other areas.

19) What should I have ready before asking for a valuation?

Your address, any major updates, rough timing, and your goal. Selling soon, refinancing, testing the market, or just curious all lead to a different conversation.

20) How do I get my home value report from Brock?

Reach out through the seller game plan or contact page, send the property address, and I will start putting the report together.

Final Thoughts

Knowing your home’s value is the first step in making a smart real estate move. Whether you are thinking about selling, refinancing, or just trying to understand your options, the number matters.

But the real value is not found by checking one website and hoping for the best. It comes from looking at the public sites, the private data, the comps, the market trends, and the strategy behind it.

That is the process I use. That is how I build a report that gives you more than a guess. It gives you a plan.

Disclaimer: This blog is for general educational purposes only and should not be considered legal, tax, lending, or financial advice. Real estate values, pricing strategy, and market conditions vary by property, location, and timing.