The closing was expected, not a fresh deal surprise. CoStar announced the Zonda agreement on May 29, 2026, and this filing confirms the previously announced transaction has cleared approvals and closed. 〔0〕 〔1〕 That makes the event confirmation rather than a new change to the investment case.
CoStar is paying cash for a scaled, recurring information business. The filing gives Zonda approximately $170 million of 2025 revenue and a 23% adjusted EBITDA margin, alongside more than 3,000 customers.
| Metric | Filing figure |
|---|---|
| Purchase price | $800 million cash (Press Release) |
| Zonda 2025 revenue | Approximately $170 million (Press Release) |
| Zonda adjusted EBITDA margin | 23% (Press Release) |
| Zonda customer base | More than 3,000 (Press Release) |
| CoStar Q2 2026 revenue | $925 million, up 18% year over year (Press Release) |
| CoStar Q2 2026 residential revenue | $444 million, up 33% year over year (Press Release) |
The strategic addition is meaningful, but the filing does not yet quantify the payoff. Zonda brings new-home construction data, builder software, and Livabl into CoStar's residential portfolio. 〔2〕 However, CoStar provides no updated revenue guidance, expected accretion, integration savings, financing impact or timetable for realizing synergies.
Net read: confirmation of a sizable strategic expansion, not a beat or miss. Relative to the market's standing expectation since the May announcement, the filing delivers the expected closing and repeats the already disclosed purchase price. The next information edge comes from how quickly Zonda is integrated and when its revenue and profitability begin appearing in CoStar's reported results.
Read the original 8-K on SEC EDGAR ↗