‹ CoStar Group
Ch 5 · The Homes.com Bet
Chapter 5 · The Outside Voice
One bet: beat Zillow at homes.
Bulls see a proven operator entering a huge market. Skeptics see money burning against an entrenched leader.
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✦ The bottom line
Read CoStar three ways: a fast-growing data machine, a deliberate money-loser building Homes.com, and a high-stakes bet against Zillow.
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Three ways to read the same filing
1
The core keeps compounding.
Revenue grew 19% to $3.25B, led by sticky subscriptions in CoStar and Apartments.com. The bull's anchor: the established business is healthy and still growing fast, funding everything else.
2
Homes.com is a deliberate cash burn.
The company-wide $72M operating loss is mostly heavy marketing to build the Homes.com brand. Management is betting that today's losses buy a durable position in residential listings — a market many times larger than commercial.
3
Zillow is the question mark.
Residential listings already have an entrenched leader. CoStar's filing warns rivals with greater resources can intensify competition. Whether the spend converts to lasting share is the single biggest open question — and analysts disagree sharply.
Source · 10-K · MD&A + Risk Factors · FY2025 · Filed Feb 26, 2026
All on the bet
A healthy core funding an unproven, expensive push into Zillow's territory.
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Chapter 5 · BEHIND THE NUMBERS
The Homes.com Bet
you now read: reading the outside voices
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