CoStar, LoopNet, Apartments.com — the subscription tools brokers, landlords, and renters rely on every day.
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✦ The bottom line
CoStar sold $3.25B of real-estate data and ads last year — up 19%. Fast growth, mostly from steady subscriptions.
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✦ Teach me
Money coming in
Most of CoStar's revenue is subscriptions: brokers, landlords, and investors pay monthly for data and listings. Subscription revenue renews automatically, so it's steadier and more predictable than one-off sales.
Wall Street calls this
Revenue / subscription revenue
Recurring subscriptions make growth durable — customers have to actively cancel to leave.
Revenue · fiscal year 2025
$3.25
B
Up from $2.74B a year earlier — +19%. Among the faster growers in this whole catalog.
Source · 10-K · Consolidated Statements of Operations · FY2025 · Filed Feb 26, 2026
From the 10-K · the marketplace network
LoopNet offers a variety of subscription-based ad packages and enhancements.
↳ Translated: landlords pay to make listings stand out — recurring ad revenue on top of data.
Source · 10-K · Business — Marketplaces · FY2025 · Filed Feb 26, 2026
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Fast grower
Double-digit growth from sticky subscriptions across commercial real-estate data and listings.