CoStar completes $800 million Zonda acquisition to expand into new-home data

CoStar Group completed its $800M acquisition of Zonda, adding new-home data and software. Zonda generated $170M in 2025 revenue with a 23% adjusted EBITDA margin. CoStar aims to integrate Zonda's offerings with its existing property data services, targeting the $400B US new-home market.

Original reporting
Published Aug 24, 2026, 12:45 AM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 24, 2026, 1:06 AM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
CoStar completes $800 million Zonda acquisition to expand into new-home data — source image
Decision brief

The 30-second read

$CSGPBullishMed
01

Why it matters

The acquisition positions CoStar to capture end‑to‑end data in the new‑home segment, potentially increasing recurring revenue and cross‑sell opportunities across its platforms.

02

Market read

A material M&A that expands CoStar's addressable market and could drive short‑term stock upside while introducing integration execution risk.

03

What to watch

Potential antitrust scrutiny or integration cost overruns; Zonda's existing customer retention rates are untested post‑acquisition.

Relevance 9/10Novelty 9/10Timing: post‑closing Aug 21 2026

Background

CoStar Group, a leading provider of commercial real‑estate information, has been expanding its portfolio with digital marketplaces and data services.

Company-level read

Ticker impact

$CSGPBullishHigh confidence
Context

CoStar Group completed an $800 million cash acquisition of Zonda, adding construction data and new-home marketplaces.

Expected impact

Short‑term upside pressure on CSGP as investors price in growth synergies; watch for volatility around integration updates.

Evidence & confidence

Large‑scale M&A with clear strategic rationale and disclosed financial terms; market typically reacts positively to such expansions.

Market effects

Adds competitive pressure in real‑estate data and construction‑tech sectors; may spur consolidation among niche data providers.

U.S. residential real‑estate data market sees increased concentration; limited immediate effect outside North America.

Highlights growing importance of construction‑stage data for global property technology platforms.

Counterpoint

Integration risks and cyclical housing market could delay synergies, weighing on CSGP if construction slows.

Key entities

  • CoStar Group

    US‑listed real‑estate data provider (NYSE: CSGP).

  • Zonda

    Construction‑data and new‑home marketplace business acquired for $800 M.

Related articles

$CSGPMed

CoStar’s Revenue Growth Fell 9% in Two Quarters. Here’s What It Isn’t Saying

CoStar Group (CSGP) reported 18.44% revenue growth in Q2 2026, down from 26.89% in Q4 2025, marking two consecutive quarters of deceleration. Management cut full-year revenue guidance but raised adjusted EBITDA guidance by $30 million. Net new bookings fell 26% year over year, attributed to strategic decisions in Ten-X, Homes.com, and Apartments.com. GAAP EBITDA showed significant volatility, contrasting with smoother adjusted figures.

$CSGPMedAI 8/10

Who Will Own The Data Layer Of Real Estate?

CoStar completed an $800m acquisition of Zonda, expanding into residential construction data. Zillow's Zestimate has median error rates of 1.8% for listed homes and 7.2% for off-market homes. Zillow faced a $881m pre-tax loss in its Homes division and an FTC settlement over a deal with Redfin. NAR settled litigation and amended MLS rules, but data access remains contested. Tech giants plan significant data center investments, with location priorities shifting.

$CSGPHighAI 9/10

CoStar Acquires Zonda for $800M, Expanding Into New-Home Data

CoStar Group completed an $800M cash acquisition of Zonda, expanding into new-home data. Zonda, with $170M in 2025 revenue, provides data to 3,000+ builders and developers. The deal follows CoStar's strong Q2 2026 results, with revenue up 18% YoY to $925M and residential revenue up 33%. CoStar aims to integrate Zonda's data and builder network with its existing platforms.

$CSGPMed

Q2 Earnings Highs And Lows: CoStar (NASDAQ:CSGP) Vs The Rest Of The Data & Business Process Services Stocks

CoStar (CSGP) reported Q2 revenue of $925M, up 18.4% YoY, meeting expectations but delivering the weakest guidance among peers. EXL (EXLS) outperformed with $594.8M revenue, up 15.6% YoY, and raised full-year guidance. Equifax (EFX) and TransUnion (TRU) also reported, with TRU raising guidance. The sector saw mixed results, with revenues 1% above consensus but next quarter's guidance 1.3% below. Stocks are up 7.8% on average since earnings.