CoStar Group to acquire Zonda for $800 million in cash
CoStar Group agreed on May 28, 2026, through a subsidiary, to buy Zonda, a provider of new home construction data, homebuilder software and new home marketplaces, for $800 million in cash. The deal is expected to close in the second half of 2026, subject to regulatory approvals, and CoStar expects it to be accretive to adjusted EPS in the first full year of ownership.
Key points
- Purchase price is $800 million in cash at closing, paid by a CoStar subsidiary under a Stock Purchase Agreement dated May 28, 2026
- Closing is not subject to CoStar stockholder approval or a financing condition; it requires HSR and certain foreign regulatory clearances
- Either party may terminate if the deal is not completed by May 28, 2027, subject to extension in certain circumstances
- Zonda serves more than 3,000 customers and reports 104% net customer retention; the company expects the deal to be accretive to adjusted EPS in the first full year
The filing
Written by AI (Anthropic Claude, claude-haiku-5-5) on Nov 8, 2026, 1:12 AM ET, from the text of the filing and its press-release exhibits only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on May 29, 2026.
Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.