Home Values
A Zillow Zestimate is an automated estimate produced by a model, not a price a buyer has agreed to pay. Its accuracy varies widely by market and by how much recent comparable sale data exists nearby. The clearest evidence of its limits comes from Zillow itself: through Zillow Offers the company bought homes at prices its own algorithm produced, lost roughly $881 million in that segment in 2021, wrote down its inventory, shut the division down and cut about 2,000 jobs — a quarter of the company. Treat a Zestimate as a starting point, and price from recent closed sales in the immediate neighbourhood instead.
Bryce Spraggins answers the seller who already looked their number up online — why an automated estimate is not a price, why an appraisal is a different number than market value, and the one question that actually tells you what a house will sell for.
Almost every seller now arrives already knowing their number. They have seen the Zestimate, and the conversation starts at "do not try to lowball me." That is a fair place to start — but an automated estimate is a model's guess, not a price, and there is a well-documented case study proving how far off it can be.
Zillow bet its own money on the Zestimate, and lost. Through Zillow Offers, the company began buying homes at prices its own algorithm produced, planning to resell them. It did not work. Zillow's home-buying segment lost roughly $881 million in 2021, the company wrote down its inventory, was left holding about 7,000 homes to unload, and shut the division down in November 2021 — laying off roughly 2,000 people, a quarter of its staff. Chief executive Rich Barton's own explanation was that the unpredictability of forecasting home prices far exceeded what they had anticipated. The company that built the Zestimate could not safely buy houses with it. That is the honest answer to how accurate it is.
So get an appraisal instead? That is a different number, not a better one. There is appraised value and there is market value, and they are rarely the same. An appraisal is a lender's opinion for lending purposes — it is what the bank is willing to finance, not what a buyer is willing to pay.
The clearest way to see the difference: you pull up to a coffee shop and order a Venti Americano. They say $5.25. You are happy to pay $5.25. You hand over the card — and your bank pulls up alongside and says hold on, we ran comps on the local gas stations and a 20-ounce coffee should cost about $2.25, so we will only fund $2.25. You can still have it, but you cover the difference in cash. That is an appraisal gap. Two willing parties agreed on a price, and a third party who is not buying anything decided it was worth less.
What actually tells you what a house is worth. When you need to know something, you ask the person currently, actively doing it. Real estate is hyper-local — sometimes down to the individual neighborhood — so the person to ask is someone transacting in your market right now. Not someone who sold in your zip code two years ago.
The question to ask a Realtor or a cash home buyer is simple, and the answer separates the good ones from the rest: what have you bought and sold in my market this month and last? Then a good Realtor should be able to tell you three numbers without hedging — what the house retails for, what it costs to sell it at retail, and what you should expect to actually pocket. A cash home buyer should be just as direct: this is what it retails for, this is what I intend to profit, this is my offer. If either one cannot walk you through it, that is your answer about who you are dealing with.
A Zestimate is a model's estimate rather than a price, and its accuracy depends heavily on how much recent comparable sale data exists near the property. Zillow itself bought homes at Zestimate-derived prices through Zillow Offers, lost about $881 million in that segment in 2021 and shut the division down, which is the strongest available evidence of how far the number can drift from what a house actually sells for.
No. A Zestimate is generated automatically from public data and recent sales without anyone visiting the property. An appraisal is a licensed appraiser's written opinion of value, usually ordered by a lender, and it involves an inspection of the actual home.
Appraised value is a lender's opinion of what a property is worth for lending purposes — effectively what the bank is willing to finance. Market value is what a buyer is actually willing to pay. The two are frequently different, and when the appraisal comes in lower the gap is either renegotiated or covered by the buyer in cash.
Zillow shut down Zillow Offers in November 2021 after its home-buying segment lost roughly $881 million that year. Chief executive Rich Barton said the unpredictability of forecasting home prices far exceeded what the company had anticipated. Zillow wrote down its inventory, was left with about 7,000 homes to sell, and cut roughly 2,000 jobs.
Ask someone who is currently transacting in your specific neighbourhood what they have bought and sold there this month and last. Real estate is hyper-local, so a neighbourhood-level read beats a national model. A good agent should be able to tell you three numbers without hedging: what the house retails for, what it costs to sell at retail, and what you should expect to pocket.
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