Rosslyn-based CoStar Group will acquire home construction data firm Zonda. The all-cash transaction is valued at $800 million.

The acquisition expands CoStar’s reach into the new home construction market. Its existing portfolio already includes major platforms such as Homes.com and Apartments.com.

CoStar will integrate Zonda’s data to provide comprehensive analytics across the real estate ecosystem. This move signals significant consolidation within the property technology sector.