Why Your Zillow Estimate Is Wrong

Checked Zillow lately to see what your home is worth?

Most homeowners do. It is human. The number is right there, on your phone, free, in ten seconds.

The problem is, that number is almost never the truth.

I am Allison Mireau with Real Connect Group. Let me explain why.

What a Zestimate actually is

A Zestimate is an algorithm.

It takes public records, recent area sales, tax data, and your home's basic stats and runs them through a formula. The result is a number.

That is it. No walkthrough. No condition assessment. No knowledge of your neighborhood beyond zip-code-level data. No idea what your home actually looks like inside.

It is a starting guess, not a real valuation. And Zillow itself says so in the fine print.

The trouble is, most homeowners do not read the fine print. They see the number and treat it like fact.

Why the number is so often wrong

Six reasons, all of them real.

1. It cannot see your home

A Zestimate does not know that you renovated the kitchen two years ago. It does not know your basement is finished. It does not know your roof was replaced last spring.

It also does not know if your home is in rough condition, if the floors are original, or if the HVAC is on its last leg.

Two homes on the same street, with the same square footage, can be worth $80,000 apart in real life. Zillow sees them as the same.

2. It uses the wrong comps

Zillow pulls comps from a wide area. That works for an algorithm. It does not work for Staten Island.

The neighborhoods here are too varied. A Tottenville comp pulled into a Westerleigh estimate is not a comp. It is a guess.

A real Realtor weighs comps block by block. Sometimes street by street. An algorithm cannot do that.

3. It misses market shifts

Algorithms lag the market. When buyer demand softens or rates move, the real market reacts in days. The Zestimate reacts in weeks, sometimes months.

By the time the algorithm catches up, the moment is already gone.

4. It does not understand condition

Zillow does not know if your kitchen is original from 1987 or freshly renovated. It cannot see deferred maintenance, water damage, or recent upgrades.

Condition often swings a home's real value by 10 to 20 percent in either direction. Zillow flattens all of that into one number.

5. It does not know your specific lot

A corner lot is not the same as a mid-block lot. A flag lot is not the same as a standard one. A backyard with privacy is not the same as one staring at a strip mall.

Zillow treats them the same. Buyers do not.

6. It does not understand the buyer pool

Different neighborhoods attract different buyers. A move-in ready home in Annadale sells fast because of the family buyer pool. A similar-sized home with the same updates in a different area might sit longer because the buyer profile is not the same.

Algorithms do not see that. People who work the market every day do.

How wrong is it, really

Zillow publishes its own accuracy data.

Across the country, Zestimates often miss the real sale price by several percentage points. In some markets, the median error is much higher. For off-market homes, where Zillow has even less information, the gap widens.

A 5 percent miss on a $750,000 Staten Island home is $37,500.

Sellers who plan around that number, list around that number, or argue with a real Realtor based on that number end up making expensive decisions.

Why sellers love the number anyway

A few honest reasons.

• It is free

• It is easy

• It often comes back higher than reality, which feels good

• It feels objective, even though it is not

I get it. I check it sometimes too, just to see what my own clients are seeing.

But I never confuse it with the real number.

What actually tells you what your home is worth

Three things.

1. A real CMA

A Comparative Market Analysis from a Realtor who works your specific area, knows your specific block, and has walked your specific home.

That is the gold standard.

2. An appraisal

When financing is involved, an appraiser will assess the home in person. Their number is not always right either, but it is grounded in real condition data and used by lenders.

3. The market itself

The real test is the market. When you list, buyers tell you in days whether the price is right. Offers, showings, and feedback are honest in a way no algorithm can be.

When the Zestimate can still be useful

I will be fair. There are a few times the number has some use.

• Casual curiosity. Sure.

• Watching long-term trends in your area, since the algorithm at least moves in the same general direction over time.

• Getting a rough ballpark before you call a Realtor.

That is it. Anything more serious requires a real conversation, not a screen tap.

What Staten Island sellers should actually do

Three honest moves.

• Use the Zestimate as a conversation starter, not a price.

• Get a real CMA before you make any selling decisions. Walkthrough. Recent comps. Strategy.

• Trust the market, not the algorithm. Once you list, the market tells you the truth in two to three weeks.

A Realtor who tells you what you want to hear is not doing you a favor. A Realtor who gives you the honest read is the one who actually nets you more money.

What I will not pretend to advise on

I am not an appraiser, attorney, or financial advisor. A CMA is not an appraisal. If your decisions tie into financing, taxes, or legal questions, talk to the right professional. I can refer trusted ones.

All of our work follows the Fair Housing Act, RESPA, the NAR Code of Ethics, and the real estate commission guidelines for New York and New Jersey.

Before you trust the number

Get the real one.

That is what I deliver to every seller I work with, in every neighborhood, every time.

Have questions about selling your home or relocating? Reach out to Allison today.

Call: 646.266.0188 Email: [email protected] Website: www.rconnectrealty.com

Contact Allison today to sell your home in SI.