How Accurate Is the Zillow Zestimate for Your Indiana Home?

How accurate is the Zillow Zestimate for a home in Indiana?

How accurate is the Zillow Zestimate? For a home that isn’t currently listed for sale, the Zillow Zestimate has a median error of about 7 percent nationwide, which lands roughly $25,000 high or low on a $350,000 Hendricks County home. Homes that are actively listed track much closer, near 2 percent, but mostly because the number quietly drifts toward your list price once you go live. The off-market Zestimate you’re looking at today is the least accurate version of itself, because it runs on public records and an algorithm that can’t see your home’s condition, your updates, or the things that make your lot different from the one down the street.

By René Hauck, REALTOR® | June 26, 2026

If you’ve pulled up your Zestimate and started doing math on what your home is worth, take a breath before you anchor to that number. I get it, it’s right there, it’s free, and it feels official. But for a home that isn’t on the market, that figure is a starting point at best, and in our price range the gap between the algorithm’s guess and your real sale price can run into the tens of thousands. Here’s how much to trust it, why it’s so often off, and what actually sets your number.

How accurate is the Zillow Zestimate, really?

Zillow publishes its own accuracy numbers, and they’re more honest than most people realize. By Zillow’s own figures, the median error is around 2 percent for homes that are actively listed and around 7 percent for homes that aren’t. That off-market number is the one that matters to you, because your home isn’t listed yet. Seven percent is roughly triple the on-market error, and it adds up fast:

• On a $350,000 home, a 7 percent miss is about $24,500 in either direction.
• On a $400,000 home, it’s roughly $28,000.
• That’s a median, which means half the time the Zestimate is off by even more than that.

So why does the on-market number look so much better? Because once your home is listed, the Zestimate starts pulling toward your list price. Zillow even measures its accuracy against the most recent Zestimate before a sale, not the figure you saw six months earlier. In plain terms: the algorithm gets to peek at the answer once you go live, then grades itself on the corrected guess. The version you’re staring at right now, off-market, is the one with the fewest inputs and the widest margin for error.

Why your Zestimate is probably off

The Zestimate is built from square footage, bed and bath count, lot size, age, location, and whatever public records and tax data Zillow can pull. That’s a reasonable skeleton, but it misses most of what a buyer actually pays for. A few of the biggest blind spots:

• It can’t see your updates. A new roof, a remodeled kitchen, fresh flooring, or a finished basement won’t count unless it shows up in public records or you add it to your home’s profile by hand. Two homes with identical square footage can be $40,000 apart in real life, and the algorithm reads them as twins.
• Public records lag. County data can be outdated, incomplete, or flat wrong on bed and bath counts or finished square footage. The Zestimate inherits every one of those errors.
• It can’t read your lot or your street. The model doesn’t know your home backs to a pond or a common area, sits on a quiet cul-de-sac, or faces a busy road. Those are real dollars to a buyer and invisible to the algorithm.
• It struggles where there are fewer sales. In smaller and rural parts of the county like Danville, Coatesville, and Pittsboro, there are fewer recent comparable sales to learn from, so the error gets wider, not tighter.

You can claim your home on Zillow and update the facts, and it’s worth doing. Just know that editing your features doesn’t always move the Zestimate, and when it does, it may not move it much. The model decides what counts, not you.

This is the point where a lot of sellers get stuck, because the number that’s wrong is the number their whole plan is built on. If you’ve made real improvements to your home and you want to know what they’re actually worth in today’s market, let’s walk through it together. I’ll tell you straight where the Zestimate is close and where it’s leaving money on the table.

What actually sets your home’s price

Here’s the distinction that matters. A Zestimate is an automated guess. An appraisal and a comparative market analysis are real valuations done by people who can walk through your home.

An appraisal is what your buyer’s lender relies on, not the Zestimate. A licensed appraiser visits the home and signs off on a value the bank will lend against. No lender in Indiana is going to fund a loan based on a Zillow number.

A comparative market analysis, or CMA, is what I put together for you before we ever set a price. It weighs recent comparable sales near you, your home’s actual condition and updates, your lot, and where the market is right now. Those last pieces are exactly the ones the algorithm can’t account for. If you want to see how that pricing process works, I broke it down in my guide to pricing your home to sell.

Market conditions also move month to month, and they move your price with them. Inventory, days on market, and buyer demand in Hendricks County aren’t what they were a year ago. Rather than trust a static algorithm, it’s worth checking the latest Hendricks County market stats for where things actually stand. And once you know your likely sale price, the next question is what you keep, which I lay out in how to calculate your home equity when downsizing.

None of this means the Zestimate is useless. It’s a fine gut check and a decent way to watch a trend over time. It just isn’t a list price, and pricing your home off it can cost you in both directions. Price too high and your home sits, collects days on market, and eventually sells for less. Price too low and you hand money to your buyer.

So treat your Zestimate as a conversation starter, not the final word. The real number comes from your home’s condition, your specific location, and a market that’s shifting under all of us right now. If you’d like a clear, no-pressure read on what your home would actually sell for today, I’m happy to put together a personalized valuation. Reach out here or call or text me at 317-987-7068, and we’ll run your real number together.

Want to know what past clients say about working with me? Read my reviews on Google, Zillow, and Realtor.com.

Frequently Asked Questions

Is the Zillow Zestimate the same as an appraisal?

No. The Zestimate is an automated estimate generated by an algorithm, while an appraisal is a formal valuation by a licensed appraiser who actually visits your home. Lenders rely on appraisals, not Zestimates, when deciding how much to loan a buyer. If you want a real read on your value before you list, reach out and I’ll prepare a market analysis built on your home, not an algorithm.

Why is my Zestimate higher or lower than I expected?

Usually it’s because the algorithm is missing something. It can’t see your renovations or condition unless they’re in public records, it inherits any errors in county data, and it can’t account for your lot, your street, or recent updates. In areas with fewer recent sales, the estimate drifts even further from reality.

Can I update or change my Zestimate?

You can claim your home on Zillow and edit your home facts and features, which is worth doing before you list. Keep in mind that your changes may not move the Zestimate right away, and the model may not weigh them the way you would. It’s a helpful step, not a fix.

Should I price my home based on the Zestimate?

It’s risky. An off-market Zestimate is off by about 7 percent on average, which is roughly $25,000 on a $350,000 home, and pricing off that can leave you too high or too low. A comparative market analysis that factors in your condition, location, and current market is a far more reliable way to set your list price. Before you settle on a number, send me a message and we’ll price it on real comparable sales, not a guess.

How does a Zestimate compare to a real estate agent’s valuation?

A Zestimate is a fast, automated starting point, while an agent’s comparative market analysis weighs recent comparable sales, your home’s actual condition, your specific location, and where the market is headed. The agent can see what the algorithm can’t, which is why a CMA is the number that should drive your pricing decision. Let’s talk through yours whenever you’re ready.