CoStar Group signed a definitive agreement to acquire Zonda for $800 million in cash. Zonda operates a B2B platform providing data, software, and marketplaces for the new home construction industry. The platform serves more than 3,000 customers, including major homebuilders, developers, and lenders.
The acquisition expands CoStar’s presence in the residential sector and the new home market. The deal adds Zonda’s proprietary datasets and the NewHomeSource.com marketplace to CoStar’s portfolio. Zonda joins existing brands such as LoopNet, Apartments.com, and Homes.com.
The transaction is expected to close in the second half of 2026. CoStar anticipates the deal will be accretive to adjusted earnings per share within the first full year. The move strengthens CoStar’s information offerings and provides deeper analytics for the homebuilding industry.