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Zillow runs the biggest U.S. real estate websites and apps, making money mainly by selling advertising to real estate agents and by charging mortgage lenders for borrower leads.
Zillow is the place most Americans start when they want to know what a home is worth or what's for sale. Its apps and websites pull together listing data on millions of homes and attach an estimated value to nearly every house in the country — the famous "Zestimate." That free, habit-forming tool is the engine: it draws in buyers, sellers, and the curious, and their attention is what Zillow sells.
The money mostly comes from real estate agents, not homebuyers. Agents pay Zillow for ad space and for leads — connections to people who are actively shopping — because winning a single listing or sale can be worth far more than the ad costs. Zillow also runs a smaller but growing mortgage business, connecting borrowers to lenders and earning fees when loans close. In recent years the fastest-growing piece has been rentals, where landlords and property managers pay to list apartments, a business that has expanded quickly as renting stays expensive and competitive. The company has a messy history worth knowing. It spent years trying to flip houses itself in a segment called Zillow Offers, buying homes and reselling them, but the operation bled money and Zillow shut it down in 2021, taking a large write-down and cutting a chunk of its workforce. It has also faced lawsuits over whether its Zestimates mislead consumers, and it settled a major one tied to its former agent-listing practice. These stumbles matter because they show how hard it is to do more than sell ads in a business where the underlying transactions are slow, local, and emotionally charged.
Rich Barton had already built Expedia, which let people see travel prices that used to be hidden. He figured real estate had the same problem: the people selling homes knew far more than the people buying them. So in late 2004 he and Lloyd Frink started building a site that mixed stock-market-style value charts with housing data, and it launched in early 2006 as a free home-value tool. It crashed almost immediately under all the visitors, which told Barton he had hit on something people really wanted.
After turning its first profit in 2010, Zillow was ready for the stock market, and it began trading on Nasdaq under the single-letter ticker Z. Going public gave it cash and a public scoreboard to keep score of the business.
Zillow then bought its biggest rival, Trulia, in a stock deal worth about $2.5 billion, putting Zillow, Trulia, StreetEasy and HotPads under one roof called Zillow Group. The combined sites handled roughly 70 percent of online home searches, a huge consolidation in a market that had been a fight between rivals. That fight would shape both companies for years, and now it was over.
Not content with showing people homes, Zillow launched Zillow Offers, a service that bought homes directly and resold them, working with local brokerages. The dream was to handle the whole transaction, from search to sale, with goals of thousands of homes a month and tens of billions in revenue. But buying and flipping houses carried thin margins and big capital risk, a danger sign buried under the ambition.
As the company pushed deeper into buying homes and mortgage lending, Rich Barton came back as CEO, replacing Spencer Rascoff. Barton said Zillow was at an inflection point, and the original dream he had chased since 2004 was finally becoming possible.
The buying-and-selling experiment blew up. Zillow Offers lost a staggering $420 million in a single quarter because its algorithms overpaid for homes and could not predict where prices were going. Zillow shut the unit down, put thousands of homes up for sale, and laid off a quarter of its employees, and the stock plunged as investors wondered what the company was anymore.
Zillow regrouped around a different idea: a "housing super app" that would guide people through the entire process of buying, selling and renting, from the first search to the closing table. Instead of owning homes, it would build on five pillars: touring, financing, seller solutions, a partner network, and integrated services.
Under CEO Jeremy Wacksman, Zillow did something it had not done in over a decade: it posted a full profitable year. The key shift was how it charged agents, moving from upfront ad fees to a success-based model tied to closed deals, so Zillow earned more when its users actually bought or sold.
Zillow then held an AI Summit to present its next identity: an "AI-native housing platform" linking discovery, renting, touring, buying, selling and financing. It set long-term targets of $5 billion in revenue and a 25 percent net income margin, signaling it had become an integrated, AI-driven platform rather than just a place to browse listings.
What makes Zillow strong is its scale and the near-monopoly-like grip on home-search attention — a position rivaled mainly by Realtor.com, run by News Corp, and by Redfin, which Zillow agreed to acquire in 2025 in a deal that folds a major brokerage and discount-brokerage rival into its advertising machine. The vulnerability is that its core customers, real estate agents, are themselves under pressure from commission changes and a soft housing market, so Zillow's ad revenue rises and falls with how many agents feel flush enough to spend. The company generates solid free cash flow and has used it to buy back stock and make acquisitions rather than pay a dividend, betting that owning the front door to American housing is worth more than handing cash back.
Saved answer · last researched 2 Nov 2026