CoStar Group (MIL:1CSGP) Moat Score: 7/10 (As of Jun. 27, 2026)


MIL:1CSGP CoStar Group Inc MIL:1CSGP
56 GF Score
Price €26.90
GF Value €90.73
Valuation Significantly Undervalued
! 1 Warning Sign
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What is CoStar Group Moat Score?

CoStar Group MIL:1CSGP 56 Moat Score is 7 as of Jun. 27, 2026. GuruFocus rates MIL:1CSGP with a GF Score™ of 56/100 and a GF Value™ of €90.73 (Significantly Undervalued). The stock has 1 warning sign investors should review. Among 1,873 Real Estate companies, CoStar Group ranks better than 99.95% on this metric.

CoStar Group has the Moat Score of 7, which implies that the company might have Wide Moat - Entry-level wide moat, clearly possessing durable advantages.

CoStar Group has Wide Moat: CoStar Group Inc has a wide moat due to its market leadership in real estate information services, strong network effects, and significant customer switching costs. Its valuable data assets and consistent innovation further enhance its durable competitive advantages.

Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more.

The company's Moat Score is based on these criteria:

1. Market leadership and sustainable market share
2. Network effects and significant customer switching costs
3. Valuable intellectual property and patents
4. Strong brand strength and deep customer loyalty
5. Durable cost advantages (e.g., economies of scale, proprietary technology)
6. Significant regulatory barriers and exclusive licenses
7. Superior distribution network
8. Strong and sustainable pricing power
9. Consistent and impactful innovation and R&D capabilities

Based on the research, GuruFocus believes CoStar Group might have Wide Moat - Entry-level wide moat, clearly possessing durable advantages.

CoStar Group  (MIL:1CSGP) Moat Score Explanation

The Moat Score ranges from 0 to 10, with 10 as the highest. GuruFocus divided Moat Score into following 8 categories:

Moat Score Moat Level
10Wide Moat - Exceptionally dominant and durable wide moat
8 - 9Wide Moat - Clear and robust wide moat
7Wide Moat - Entry-level wide moat, clearly possessing durable advantages
6Narrow Moat - Strong narrow moat, clearly distinguishable but not wide
5Narrow Moat - Solid narrow moat
4Narrow Moat - Discernible but modest moat
1 - 3No Moat - Very weak/transient advantages
0No Moat - No discernible moat

CoStar Group Moat Score Related Terms

MIL:1CSGP vs JLL, BEKE, COMP: Moat Score Comparison

For the Real Estate Services subindustry, CoStar Group's Moat Score, along with its competitors' market caps and Moat Score data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.

CoStar Group Moat Score vs Real Estate Industry

For the Real Estate industry and Real Estate sector, CoStar Group's Moat Score distribution charts can be found below:

* The bar in red indicates where CoStar Group's Moat Score falls into.


MIL:1CSGP
56GF Score
CoStar Group Inc MIL:1CSGP
Moat Score is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about Moat Score →
What does a Moat Score of 7 mean?
CoStar Group (MIL:1CSGP) has a Moat Score of 7 as of Jun. 27, 2026. Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more. According to the industry distribution chart, CoStar Group ranks #1 out of 1873 companies in the Real Estate industry, placing it in the top 0.099999999999994%.
Is CoStar Group's Moat Score too high?
CoStar Group's current Moat Score is 7. Based on the distribution chart, CoStar Group ranks #1 out of 1873 companies in the Real Estate industry, which is in the top quartile — a strong position relative to peers. Overall, CoStar Group has a GF Score™ of 56/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does CoStar Group's Moat Score compare to JLL and BEKE?
According to the Real Estate industry distribution chart, CoStar Group ranks #1 out of 1873 companies for Moat Score. This places CoStar Group in the top 0% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Moat Score for a Real Estate company?
A good Moat Score depends on the Real Estate industry context. However, Moat Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Moat Score mean?
A high Moat Score can signal that a stock is expensive relative to its fundamentals. Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more. CoStar Group's current Moat Score is 7. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is CoStar Group stock overvalued right now?
Based on GuruFocus' analysis, CoStar Group (MIL:1CSGP) is currently considered Significantly Undervalued. The stock's GF Value™ is €90.73, compared to a current price of €26.90 — trading 70.4% below its estimated fair value. The current Moat Score is 7. CoStar Group's overall GF Score™ is 56/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Moat Score calculated?
Moat Score is calculated from a company's financial statements. For CoStar Group (MIL:1CSGP), the current Moat Score is 7 as of Jun. 27, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is CoStar Group (MIL:1CSGP) Overvalued in 2026?

Based on GuruFocus' analysis, CoStar Group stock appears to be undervalued. The current stock price of €26.90 is trading 70.4% below its estimated GF Value™ of €90.73. GuruFocus considers CoStar Group to be Significantly Undervalued.

Key valuation signals for MIL:1CSGP:

  • Moat Score: 7
  • GF Value™: €90.73 vs. price of €26.90 (70.4% below fair value)
  • GF Score™: 56/100 with 1 warning sign

No single metric tells the full story. See the MIL:1CSGP stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

CoStar Group Business Description

Address 1201 Wilson Boulevard, Arlington, VA, USA, 22209
CoStar Group is a global provider of proprietary information, analytics, and online marketplaces serving both commercial and residential real estate. The firm operates through a diverse portfolio of brands, including CoStar Suite for commercial real estate research, LoopNet for commercial listings, Apartments.com for multifamily rentals, and Homes.com for residential brokerage. It primarily sells high-margin software-as-a-service subscriptions that provide institutional clients with forensic property data and premium advertising visibility. With operations across North America, Europe, and Asia-Pacific, CoStar maintains the industry's most comprehensive centralized real estate database, functioning as a critical information utility for brokers, lenders, and owners worldwide.
56GF Score

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Moat Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€26.90
Price
€90.73
GF Value