1. Consistent Top-Line Growth, But Market Skepticism

  • CoStar reported its 58th consecutive quarter of double-digit revenue growth, with Q3 revenue up 20% year-over-year to $834 million.

  • Net new bookings were $84 million (+92% YoY).

  • Despite the strong growth, CoStar had a net loss of $31 million for the quarter, mainly due to acquisition and development costs.

  • The market reacted negatively: CoStar’s share price dropped up to 18% after the results, reflecting investor concerns about short-term profitability and high spending levels.youtube

2. Competitive Rental Market & Litigation with Zillow

  • A major legal battle is ongoing: CoStar is suing Zillow for alleged widespread copyright infringement concerning multifamily rental listings and images.

  • The multifamily rental segment is highly competitive; CoStar (apartments.com) and Zillow are both rapidly increasing listings.

  • CoStar has 87,000 multifamily listings—a significant rise—and $1.2B revenue run rate for apartments.com, up 11% YoY.

  • The legal environment (including third-party lawsuits against Zillow over the Redfin deal) makes the rental portal space volatile and strategic.youtube

3. Homes.com Growth and Differentiated Business Model

  • Homes.com, CoStar’s residential portal, is growing fast:

    • Net new agent subscriber bookings at an annualized $16M, up 53% quarter-over-quarter.

    • 26,000 agent subscribers (+7,000 in Q3).

    • Strong focus on being “agent-friendly,” targeting subscription revenue over high traffic volume.

    • Only about 5% of active US agents pay, so there’s significant headroom.

    • Organic site traffic grew 87% YoY, with reduced bounce rate.

  • Homes.com’s model does not rely on traffic dominance (unlike Zillow); it focuses on converting agents and offering differentiated services.

4. Vendor Paid Advertising Approach

  • Homes.com is pioneering “vendor paid” (homeowner-paid) advertising, rare outside Australasia and Scandinavia.

  • This “boost” product grew 136% QoQ (still small in dollar terms, ~$617k but a new avenue for future growth).

  • Strategic aim: capture additional value from property sellers, not just agents.

5. Strategic AI and Technology Initiatives

  • CoStar is investing heavily in AI—50% of Homes.com development resources are allocated to AI features.

  • Partnership with Microsoft to co-develop AI-powered features for real estate search/user experience (contrasting with Zillow’s OpenAI alliance).

  • CoStar believes that deep, vertical-specific knowledge and proprietary data are essential for truly useful real estate AI—generic LLMs are not enough for specialized needs.

6. Major Acquisitions & Integration

  • Ongoing integration of OnTheMarket (UK), Domain (Australia), and Matterport.

  • Focus is on cross-market synergies, product innovation, and “unlocking value” in underperforming acquisitions.

  • Matterport’s 3D digital twin technology is seen as a transformative asset for both residential and commercial listings across CoStar’s global platforms.

  • Integration of marketing, technology, and sales practices from US units (Homes.com) into acquired international portals.

7. Contrasting Visions: CoStar vs. Zillow

  • CoStar positions itself as the “specialist” with a vertical service focus, long-term vision, and strong agent empowerment narrative.

  • Zillow’s vision is “vertical integration” or even a future “Amazon of real estate”—a super-app for the entire transaction.

  • Direct competitive rhetoric: CoStar highlights lawsuits faced by Zillow and subtly appeals to investors as a less legally challenged, high-potential alternative.

  • Both companies invest in AI and new products, but differ in monetization, partnerships, and product scope.

8. Investor & Analyst Sentiment

  • Despite robust growth, investors are worried about short-term profit, declining margins, and the heavy upfront costs of new tech, marketing, and integrations.

  • The call stressed that CoStar is playing the “long game” and expects sustained, compounding gains from its current investments—market, however, remains impatient for near-term returns.

Summary:
CoStar continues to post strong top-line growth and is aggressively reinvesting in new business lines, technology, and international expansion. While its strategy is long-term and innovation-driven, current losses and massive investments have made the market nervous, as reflected in share price volatility. CoStar frames itself as the vertical specialist, in contrast to Zillow’s “one-stop-shop” ambitions, betting on a combination of organic growth, AI innovation, and acquisition integration to reshape the real estate portal landscape.youtube

  1. https://www.youtube.com/playlist?list=PL6r5dzJ_9AZhJWjxxNwva7ZKdxb_HVnBL
  2. https://www.youtube.com/watch?v=BXl_kt-nGRo&list=PL6r5dzJ_9AZhJWjxxNwva7ZKdxb_HVnBL&index=2