What is CoStar Q1 2026 earnings? CoStar Q1 2026 earnings is the April 28, 2026 quarterly report from CoStar Group (NASDAQ: CSGP), the dominant CRE data and analytics platform, showing revenue of $897 million, up 23% year over year, adjusted EBITDA of $132 million, up 100%, and 119% organic traffic growth at Homes.com after the February 2026 launch of the Homes.com AI application. The print marks CoStar's 60th consecutive quarter of double digit revenue growth and signals that AI native consumer search is now a meaningful traffic engine for CRE listing platforms. For broader context on AI tools and platforms reshaping the industry, see our pillar guide on AI tools for real estate investors.
Key Takeaways
- CoStar Q1 2026 revenue grew 23% YoY to $897 million, with adjusted EBITDA doubling to $132 million and adjusted EPS of $0.23 up 53%.
- Homes.com revenue grew 58% YoY in Q1 2026 and the Homes.com AI application launched in February drove 119% organic traffic growth versus the prior year period.
- CoStar produced $67 million in annualized net new bookings, up 20%, and held a 89% contract renewal rate (95% for customers subscribed five plus years).
- Q2 2026 revenue guidance of $922 to $932 million implies 18% to 19% YoY growth, with adjusted EBITDA of $160 to $180 million.
- CoStar's average monthly unique visitors hit 131 million across its websites in Q1 2026, an enormous distribution moat for any CRE focused AI product layered on top.
CoStar Q1 2026 Earnings: The Numbers
CoStar Group reported Q1 2026 revenue of $897 million on April 28, 2026, up 23% from $732 million in Q1 2025 and at the high end of guidance. Gross profit reached $701 million versus $579 million a year ago. GAAP net income was $3 million, or $0.01 per diluted share, compared with a $15 million loss in Q1 2025. Adjusted net income climbed 49% to $94 million, and adjusted EPS of $0.23 was up 53%.
The standout metric for CRE investors is adjusted EBITDA of $132 million, up 100% year over year, alongside $67 million of annualized net new bookings, up 20%. This is the 60th consecutive quarter of double digit revenue growth for CoStar, and it lands in the middle of an AI driven repricing across the CRE platform stack. For comparison, see our coverage of CBRE's 81% Q1 2026 profit surge and First American Q1 2026's data center driven AI growth.
The Homes.com AI Story
The most consequential disclosure on the Q1 call was the performance of the Homes.com AI application, launched in February 2026. CEO Andy Florance reported 119% organic traffic growth at Homes.com in Q1 2026 versus the prior year period, and the residential segment overall grew 32% to $425 million in revenue with 13% organic growth.
Three things make this AI launch noteworthy for CRE investors:
- AI as a distribution flywheel, not a feature: Homes.com framed the AI app as the primary driver of organic search lift, suggesting AI grounded answers (not paid ads) are reshaping how consumers find listings. CoStar reported 131 million average monthly unique visitors across all properties in Q1 2026.
- Member agent economics improving: Florance described member agent ROI on Homes.com subscriptions as extraordinary, and the residential adjusted EBITDA loss narrowed to negative $29 million, better than guidance, on rising agent subscription revenue.
- 89% renewal rate, 95% for tenured customers: CoStar's contract renewal rate has held at 89% for seven consecutive quarters, with the five plus year cohort renewing at 95%, evidence that the AI investment is not eroding pricing power in the legacy CRE data products.
What This Means for CRE Platform Investors
CoStar's Q1 2026 print maps to a broader 2026 thesis that AI is now the primary growth lever for CRE platforms, not a marketing layer. Across the AI Consulting Network coverage universe, similar patterns are showing up at Covercy One, the first AI powered OS for CRE investment management, and at title insurers integrating AI into closings. According to PitchBook and CRETI tracking data referenced in 2026 proptech investment reports, the global proptech sector saw approximately $16.7 billion of venture investment in 2025, with AI centered companies growing investment volume at roughly twice the rate of non AI proptech. For broader CRE market context, see JLL's Trends and Insights coverage of technology adoption in commercial real estate.
For CRE investors with platform exposure, three signals to monitor:
- Traffic mix: Organic AI driven traffic share versus paid acquisition. Homes.com's 119% organic lift is the data point to benchmark against.
- Net new bookings velocity: $67 million of annualized net new bookings (up 20%) is a leading indicator. Compare against guidance for Q2 2026 of 18% to 19% revenue growth.
- Renewal cohort behavior: Contract renewal rate by tenure. The 95% renewal for five plus year customers is a moat indicator, especially as AI native challengers like ChatGPT, Claude, Gemini, and Perplexity offer free alternatives for parts of the CRE research workflow.
If you're ready to transform your CRE underwriting, market research, or platform diligence process with AI, The AI Consulting Network specializes in exactly this. CRE investors looking for hands on AI implementation support can reach out to Avi Hacker, J.D. at The AI Consulting Network.
How CoStar Q1 2026 Compares to Industry Benchmarks
CoStar's print sits inside a broader set of strong CRE earnings. CBRE Q1 2026 reported an 81% profit surge driven by data center and AI infrastructure demand. First American Q1 2026 saw data center title revenue up 76% year over year. CoStar adds the consumer and SaaS dimension to this picture: 131 million monthly unique visitors, 23% top line growth, and a doubling of adjusted EBITDA.
Across the corporate occupier base, 92% have initiated AI programs but only 5% report achieving most of their AI program goals, according to industry surveys cited in 2026 CRE research. CoStar's results suggest that platforms with massive distribution and clean training data, exactly what the LoopNet, Apartments.com, and Homes.com properties provide, are positioned to be among the 5% that capture meaningful operating leverage from AI rather than just spending on it.
Frequently Asked Questions
Q: What was CoStar Group's Q1 2026 revenue?
A: CoStar Group reported Q1 2026 revenue of $897 million on April 28, 2026, up 23% year over year from $732 million in Q1 2025. This marked the 60th consecutive quarter of double digit revenue growth.
Q: How much did Homes.com grow in Q1 2026?
A: Homes.com revenue grew 58% year over year in Q1 2026. The Homes.com AI application, launched in February 2026, drove a 119% increase in organic traffic versus the prior year period. Total residential segment revenue reached $425 million, up 32%.
Q: What is CoStar's Q2 2026 guidance?
A: CoStar guided to Q2 2026 revenue of $922 million to $932 million, implying 18% to 19% year over year growth, with adjusted EBITDA of $160 million to $180 million. The guidance reflects continued investment in AI features and salesforce expansion.
Q: How does CoStar's AI strategy compare to other CRE platforms?
A: CoStar is using AI to drive consumer organic search traffic and improve agent ROI on Homes.com, while preserving an 89% contract renewal rate (95% for five plus year customers). Other CRE platforms like Covercy One are taking a different angle, building AI native investment management tools for sponsors and LPs. Both approaches indicate AI is now a primary growth lever, not a feature layer.
Q: Should CRE investors view CoStar's results as a sector wide signal?
A: CoStar's strong print, alongside CBRE Q1 2026's 81% profit surge and First American's 76% data center title growth, suggests AI driven demand and AI native product launches are now a measurable tailwind across the CRE platform and services stack. For underwriting platform exposure, monitor traffic mix, net new bookings velocity, and renewal cohort behavior as the leading indicators.