Fourth Quarter and Full Year 2025 Highlights Forward-Looking Statements This investor presentation includes "forward-looking statements". Potential factors that may cause actual results to differ materially from those projected in these forward-looking statements are described in CoStar Group's periodic filings with the Securities and Exchange Commission ("SEC"), such as Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K, including the "Risk Factors" sections of tho ...

Exhibit 99.1 CoStar Group™ CoStar Group Full Year 2025: Revenue Increased 19% Year-over-Year; Net Income of $7 million; Adjusted EBITDA of $442 million, up 83% Year-over- Year; Record Net New Bookings of $308 million; $700 million Share Repurchase in 2026 ARLINGTON, VA - February 24, 2026 - CoStar Group, Inc. (NASDAQ: CSGP), a leading provider of online real estate marketplaces, information, analytics, and 3D digital twin technology in the property markets, announced today that revenue for the year ended De ...

Group 1 - CoStar has launched an AI tool designed for home buyers to interact with property listings in a conversational manner, similar to discussions with family or real estate agents [1]

Core Insights - CoStar Group (CSGP) is expected to report fourth-quarter 2025 earnings on February 24, 2026, with projected revenues between $885 million and $895 million, indicating a year-over-year growth of 25% at the mid-point [1] - The Zacks Consensus Estimate for revenues is currently at $891.08 million, suggesting a growth of 25.61% from the previous year's quarter [1][2] - The consensus for earnings has slightly decreased to 27 cents per share, reflecting a 3.85% increase from the year-ago quarter [2] Revenue Growth Drivers - CoStar Group's fourth-quarter performance is anticipated to benefit from a strong portfolio of marketplaces, including Apartments.com, LoopNet, and Homes.com [3] - Apartments.com is projected to see revenue growth of 11% to 12% in Q4 2025, with residential revenue expected to exceed $100 million to $105 million, bolstered by the Domain acquisition contributing approximately $67 million [4] - LoopNet is expected to achieve revenue growth of 15%-17% in the upcoming quarter, with organic growth at 11%, the highest since 2023, driven by a revamped sales strategy and international expansion [5] - Homes.com is experiencing rapid growth, reaching an average of 115 million unique monthly visitors in Q4 2025, with AI-powered features expected to enhance user experience and drive further traffic [6] Challenges - Despite the positive growth indicators, CoStar Group faces challenges from macroeconomic uncertainties and ongoing headwinds in the commercial real estate market, which may impact revenue growth [7]

Wall Street expects a year-over-year increase in earnings on higher revenues when CoStar Group (CSGP) reports results for the quarter ended December 2025. While this widely-known consensus outlook is important in gauging the company's earnings picture, a powerful factor that could impact its near-term stock price is how the actual results compare to these estimates.The stock might move higher if these key numbers top expectations in the upcoming earnings report, which is expected to be released on February ...

Market Overview - Wall Street is experiencing significant disruption concerns due to AI, leading to a sell-off in various sectors, particularly software companies, which has resulted in sharp losses in U.S. stocks this week [1][2]. Software Sector - The S&P 500 Software & Services index has lost approximately $2 trillion in value since its peak in October, with half of this loss occurring in the past two weeks due to fears that AI could disrupt traditional subscription and enterprise tools [2]. - Notable declines in the Nasdaq 100 include Atlassian down 47%, Intuit down 40%, and Workday down 33% [4]. - The U.S. software sector is facing its worst drawdown in over three years, impacting alternative asset managers with exposure to software-related loans, with firms like Ares, Blackstone, and KKR seeing declines between 13% and 24% this year [5]. Financial Brokerage, Data Analytics & Legal Services - The financial industry, especially brokerages and data analytics firms, has been negatively affected after Altruist introduced AI-enabled tax planning features, raising fears about the viability of their business models [6]. - Shares of brokers such as LPL Financial and Charles Schwab fell over 7%, while S&P Global's shares dropped more than 25% in February, marking its worst month since 2009 [7]. Real Estate Services - Commercial real estate and investment managers have suffered as investors shift away from high-fee, labor-intensive business models perceived as vulnerable to AI disruption, with CBRE Group and Jones Lang LaSalle each dropping about 12% [8]. Insurance Sector - Insurance stocks have experienced a significant decline, with the S&P 500 insurance index falling 3.9% on a single day, its largest drop since mid-October, following the release of an AI-powered comparison tool by Insurify [10]. - Shares of Willis Towers Watson have decreased by 15% this week, while Aon and Arthur J. Gallagher fell by 9% and 15%, respectively [11]. Trucking & Logistics - The trucking and logistics sector saw unexpected declines, with stocks like Landstar System and C.H. Robinson dropping sharply after Algorhythm Holdings reported a significant increase in freight volumes without a corresponding rise in operational headcount [13].

Core Insights - The nationwide median home sale price increased by 1.3% year-over-year, rising from $370,000 in January 2025 to $374,900 in January 2026, indicating a normalization in the homebuying market [1] - Home price growth averaged 2.8% per year over the past two years, aligning closely with overall inflation, while incomes have grown more rapidly, enhancing home affordability [1] - The housing market shows improved negotiating balance, with a four-month supply of homes and an average of nearly 12 weeks on the market before selling, suggesting neither buyers nor sellers dominate [1] Market Trends - Major markets in the Northeast and Midwest experienced significant home price appreciation, with Philadelphia leading at an 8.6% increase, followed by Baltimore (5.6%), Washington D.C. (4.8%), and Boston (3.7%) [1] - Over 57% of nearly 1,000 tracked markets reported year-over-year price growth in January, contrasting with declines in some Southern and Western cities, notably Raleigh, NC (-4.3%) and Seattle (-3.8%) [1] Company Overview - Homes.com, part of CoStar Group, is the fastest-growing residential real estate marketplace in the U.S., focusing on enhancing marketing for homeowners and agents [1] - The platform reached an audience of 115 million average monthly unique visitors in Q3 2025, with brand awareness increasing from 4% to 33% following a major marketing campaign [1]

Core Insights - National rent growth in the U.S. showed a positive trend in January 2026, with the average rent increasing to $1,713, reflecting a 0.2% rise from December 2025's revised figure of $1,709 [1] - Annual rent growth slightly decreased to 0.6% in January 2026 from 0.7% in December 2025, and down from 1.5% in January 2025 [1] - Rent growth patterns are influenced by seasonal trends, with January typically building on December's growth [1] Rent Growth Trends - All four U.S. regions experienced month-over-month rent increases in January 2026, with the Midwest leading at 0.27%, followed by the Northeast at 0.21%, the South at 0.17%, and the West at 0.09% [1] - The Midwest also showed the strongest annual performance with a 2.1% increase, while the South and West experienced declines of 0.2% and 1.5% year-over-year, respectively [1] Market Performance - 42 out of the top 50 U.S. markets reported rent increases in January 2026, a significant improvement from 25 markets in December [1] - San Francisco led with a monthly rent growth of 1.07%, while Oklahoma City saw the steepest decline at -0.17% [1] Supply and Demand Dynamics - Elevated supply pressures continue to impact rent growth, with markets experiencing the highest levels of new construction showing weaker rent performance [1] - Areas with constrained supply, particularly in the Midwest and select coastal regions, are outperforming those with oversupply [1] Company Overview - CoStar Group, the parent company of Apartments.com, is a leader in commercial real estate information and analytics, dedicated to transforming the real estate industry through innovative technology [1]

Core Insights - U.S. office vacancy projections remain stable, with a forecasted rate of 14.1% through the end of 2026, indicating a steady outlook for the sector [1] Group 1: Vacancy Projections - The near-term U.S. office outlook anticipates stable vacancy rates at 14.1% until the end of 2026 [1] - A cyclical peak in office vacancy is expected in mid-2025, followed by a slight decrease by the end of that year [1] - After 2026, a gradual decline in vacancy rates is anticipated, suggesting a potential recovery in the office market [1]

Core Viewpoint - CoStar Group, Inc. will announce its financial results for Q4 and the full year of 2025 on February 24, 2026, after market close, followed by a conference call to discuss the results and outlook [1]. Company Overview - CoStar Group is a leading provider of online real estate marketplaces, information, analytics, and 3D digital twin technology, dedicated to digitizing the real estate sector [3]. - Founded in 1986, CoStar Group aims to empower individuals and businesses by providing insights and connections to improve their operations and lives [3]. Major Brands - CoStar Group's major brands include: - CoStar: A global provider of commercial real estate data, analytics, and news - LoopNet: The most trafficked commercial real estate marketplace - Apartments.com: The leading platform for apartment rentals - Homes.com: The fastest-growing residential real estate marketplace - Domain: A leading property marketplace in Australia - Matterport: A spatial data company that enhances the value and accessibility of spaces - STR: A leader in hospitality data and benchmarking - Ten-X: An online platform for commercial real estate auctions and bids - OnTheMarket: A leading residential property portal in the UK [4]. Website Traffic - CoStar Group's websites attracted over 143 million average monthly unique visitors in Q3 2025, indicating strong global client engagement [5].