About the CoStar Commercial Repeat-Sale Indices

The CoStar Commercial Repeat-Sale Indices (CCRSI) is the most comprehensive and accurate measure of commercial real estate prices in the United States. In addition to the national Composite Index (presented in both equal-weighted and value-weighted versions), national Investment Grade Index and national General Commercial Index, which we report monthly, we report quarterly on 30 sub-indices in the CoStar index family. The sub-indices include breakdowns by property sector (office, industrial, retail, multifamily, hospitality and land), by region of the country (Northeast, South, Midwest, West), by transaction size and quality (general commercial, investment grade), and by market size (composite index of the prime market areas in the country). 

The CoStar indices are constructed using a repeat sales methodology, widely considered the most accurate measure of price changes for real estate. This methodology measures the movement in the prices of commercial properties by collecting data on actual transaction prices. When a property is sold more than one time, a sales pair is created. The prices from the first and second sales are then used to calculate price movement for the property. The aggregated price changes from all of the sales pairs are used to create a price index.


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Contact:

Mark A. Klionsky, Senior Vice President-Marketing (mklionsky@costargroup.com).

For more information about the CCRSI Indices, including the full accompanying data set and research methodology, legal notices and disclaimer, please visit http://costargroup.com/costar-news/ccrsi.

About CoStar Group, Inc. 

CoStar Group (Nasdaq:CSGP) is the leading provider of commercial real estate information, analytics and online marketplaces. Founded in 1987, CoStar conducts expansive, ongoing research to produce and maintain the largest and most comprehensive database of commercial real estate information. Our suite of online services enables clients to analyze, interpret and gain unmatched insight on commercial property values, market conditions and current availabilities. Through LoopNet, the Company operates the most heavily trafficked commercial real estate marketplace online with more than 9 million registered members. Apartments.com is a premier online apartment resource for renters that matches apartment seekers with great apartment homes and provides property managers and owners a proven platform for marketing their properties. CoStar operates websites with over 19 million unique monthly visitors in aggregate during January 2015. Headquartered in Washington, DC, CoStar maintains offices throughout the U.S., Canada and Europe with a staff of over 2,400 worldwide, including the industry's largest professional research organization. For more information, visit www.costargroup.com. 
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This news release includes "forward-looking statements" including, without limitation, statements regarding CoStar's expectations, beliefs, intentions or strategies regarding the future. These statements are based upon current beliefs and are subject to many risks and uncertainties that could cause actual results to differ materially from these statements. The following factors, among others, could cause or contribute to such differences:  the risk that the trends represented or implied by the indices will not continue or produce the results suggested by such trends; and the risk that investor demand and commercial real estate pricing levels will not continue at the levels or with the trends indicated in this release.  More information about potential factors that could cause actual results to differ materially from those discussed in the forward-looking statements include, but are not limited to, those stated in CoStar's filings from time to time with the Securities and Exchange Commission, including in CoStar's Annual Report on Form 10-K for the year ended December 31, 2014, which is filed with the SEC, including in the "Risk Factors" section of the filing, as well as the company's other filings with the SEC available at the SEC's website (www.sec.gov). All forward-looking statements are based on information available to CoStar on the date hereof, and CoStar assumes no obligation to update such statements, whether as a result of new information, future events or otherwise. '
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