In 2021, Zillow put real money behind its own algorithm. Zillow Offers bought houses at the model's price, renovated them, and flipped them at scale. The company had two decades of listing data and the most famous price estimate on the internet. If anyone could nail the number, it was Zillow.
By November it was over. A write-down north of $540 million, 2,000 jobs cut, a quarter of the company gone, the whole operation shut down. The model had been buying houses for more than it could sell them.
The part that stings is the acceptance rate. Only about 10% of Zillow's offers got taken. So who says yes when an algorithm bids on your house? The people who already know the number is wrong.
A house refuses to be one number. It's a roof replaced in 2009, a school district boundary, a neighbor with roosters. And if the best-funded algorithm in real estate couldn't squeeze one house into one number, think about the family trying to squeeze an entire move: new salary, new state taxes, two daycare slots, a second car, homeowners insurance in a ZIP code the carriers are quietly backing out of.
Today's featured idea, the Move Math Engine, is built for that family. Someone gets offered $145,000 in Raleigh and it reads like a $30,000 raise. Whether any of it survives depends on housing, childcare, commuting, and insurance in one specific county, and nothing on the internet does that math together. The engine ranks counties by what's actually left over each month, for your household, from data that's already public.
Insurance alone carries it: households in the riskiest fifth of ZIP codes pay 82% more, and premiums are up 46% since 2021. At $39 a report, 500 reports a month is $19,500, and 40 recruiter and relocation accounts add roughly another $20,000 in MRR. Zillow isn't coming for this, either. It shipped climate risk on every listing in 2024, then pulled it when agents complained it was costing them sales. The portal works for the seller. Nobody's working for the family.
Read the full playbook here:
Zillow shipped climate risk on every listing, then pulled it. Nobody calculates whether a raise survives housing, childcare, commuting, and homeowners insurance in one specific county.
From the Vault:
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