CoStar Group Acquires Zonda for $800M, Enters $1T New Home Construction Market

What happened

CoStar Group announced Friday it will acquire Zonda for $800 million in cash, with the transaction expected to close in the second half of 2026 pending regulatory approval. Zonda provides lot-level databases, builder workflow software, and operates two consumer-facing new home marketplaces-NewHomeSource (U.S.) and Livabl (Canada). The company serves more than 3,000 customers across the homebuilding ecosystem, including major builders, developers, suppliers and lenders, with the majority of revenue coming from subscriptions. Zonda reports a 104% net customer retention rate, indicating strong client loyalty and upsell activity.

Why the stock moved

The acquisition represents CoStar's most direct push into the nearly $1 trillion annual U.S. new residential construction market, according to U.S. Census data. CoStar expects the deal to be accretive to adjusted earnings per share in the first full year of ownership, signaling management confidence in near-term profitability contributions. The announcement comes as CoStar faces investor scrutiny over heavy spending on Homes.com, its residential portal. A company spokesperson indicated the investment cycle there has ended, with focus shifting to margin expansion and profitable growth-suggesting this deal fits a more disciplined capital allocation strategy.

Bigger picture

The Zonda acquisition extends CoStar's footprint beyond commercial real estate data into residential construction analytics and builder software. At the core is Zonda's proprietary, lot-level database covering new home communities, land development activity, construction status and builder operations-data embedded directly into workflows for land acquisition, development planning and sales. CoStar also plans to integrate Zonda's Envision visualization platform with Matterport's spatial technology to create more immersive digital marketing tools. Because NewHomeSource and Livabl carry only new construction inventory, they offer builders targeted lead generation uncluttered by resale listings, differentiating them from broader real estate portals.

What investors watch

Investors will monitor regulatory approval progress and integration execution through 2026. Key metrics include whether Zonda's 104% net retention rate holds post-acquisition, and how quickly CoStar realizes the projected earnings accretion. Broader questions remain around whether the deal accelerates CoStar's shift toward profitability after years of heavy investment in Homes.com, and whether the company can leverage Zonda's builder relationships to cross-sell its broader suite of real estate information services. Any updates on margin expansion timelines or capital allocation priorities will also be closely watched.