Rosslyn-based CoStar Group will acquire home construction data firm Zonda.

The all-cash transaction is valued at $800 million.

This acquisition expands CoStar’s portfolio into the new home construction market.

Zonda joins existing CoStar platforms including Homes.com and Apartments.com.

The deal integrates new housing market segments into CoStar’s analytics ecosystem.

This move consolidates data services within the property technology sector.