CoStar Acquires Zonda in $800M Cash Deal

• CoStar Group has agreed to acquire Zonda for $800 million in cash.
• The deal expands CoStar’s reach into residential construction data, builder software, and new-home marketplaces.
• The acquisition is expected to close during the second half of 2026, subject to regulatory approvals.

What the Acquisition Includes

CoStar Group has announced plans to acquire Zonda, a leading provider of housing market intelligence, homebuilder software, and residential real estate data platforms. The $800 million cash transaction will significantly expand CoStar’s presence within the residential construction sector, adding capabilities that complement its existing portfolio of commercial real estate, apartment, and residential listing businesses. Once completed, the deal will give CoStar access to Zonda’s extensive housing data platform, which tracks new-home construction activity, housing starts, land supply, builder performance, and market trends across North America.

What Zonda Brings to CoStar

Zonda has become one of the most influential data providers serving homebuilders, developers, investors, and housing market professionals. The company also operates consumer-facing marketplaces, including NewHomeSource and Livabl, providing exposure to new-home buyers throughout the United States and Canada. Its software and analytics tools are widely used by builders throughout the development process, from land acquisition and market analysis to construction planning and sales performance tracking.

What This Means for CoStar’s Growth Strategy

The acquisition continues CoStar’s long-term strategy of expanding through high-value information, analytics, and marketplace platforms. The company already operates some of the real estate industry's largest digital brands, including LoopNet, Apartments.com, Homes.com, and Matterport. By adding Zonda, CoStar gains a deeper presence in the residential development ecosystem, creating opportunities to serve builders, developers, lenders, investors, and housing professionals with more comprehensive data solutions.

What This Says About the Housing Data Market

The transaction highlights the growing value of real estate intelligence platforms as developers and investors increasingly rely on data-driven decision-making. Residential construction remains one of the largest segments of the real estate industry, yet it has historically operated with fewer integrated data resources compared to commercial real estate. The acquisition positions CoStar to become a stronger competitor in housing analytics while diversifying revenue beyond consumer home-search platforms.

What MidOcean Partners Achieved

The sale also marks a successful exit for MidOcean Partners, which spent years building Zonda through a series of strategic acquisitions. MidOcean combined Hanley Wood and Meyers Research before rebranding the platform as Zonda in 2020. The private equity firm subsequently completed numerous add-on acquisitions to expand the company’s data, software, and marketplace offerings. The result was a consolidated housing intelligence platform that attracted one of the largest real estate technology acquisitions of the year.

What the Industry Will Watch Next

Industry observers will closely monitor how CoStar integrates Zonda into its broader ecosystem of data, analytics, and marketplace products. The transaction also signals continued consolidation across the proptech and real estate information sectors, where scale and proprietary data have become increasingly valuable competitive advantages. If completed as expected, the acquisition could further strengthen CoStar’s position as one of the most influential data and technology providers across both commercial and residential real estate.