NAI CIR and Gladstone Named 2021 CoStar Power Brokers

Lemoyne, PA – NAI CIR is proud to announce our company has been awarded our 22nd consecutive CoStar Power Broker Award as one of 2021’s Top Leasing Firms in the Philadelphia Region. Additionally, NAI CIR agent, William Gladstone, has been awarded the CoStar Power Broker Award as one of 2021’s Top Office Leasing Brokers for the Philadelphia Region.

For the 22nd consecutive year, NAI CIR has been named CoStar Power Broker. NAI CIR is the only commercial real estate firm in Pennsylvania that has been recognized every year since Costar began these prestigious industry awards.

“With over 50 years as an independent and locally owned firm, we are proud to be a recognized leader in the commercial real estate market,” said Robin Zellers, SIOR, FRICS, CRE, President of NAI CIR. “We owe our continued success to the dedication of the entire NAI CIR team and the longstanding support and trust of our clients.”

Through the annual CoStar Power Broker Awards, CoStar Group recognizes professionals and firms who closed the highest transaction volume in commercial real estate deals in their respective markets.


NAI CIR, based in Lemoyne, is Central Pennsylvania’s oldest and largest exclusively commercial industrial real estate full-service brokerage firm. Founded in 1970, the firm is consistently ranked as the top producing commercial industrial sales and leasing firm by the Central Pennsylvania Business Journal and by Real Capital Analytics. The firm has been honored as a Philadelphia Region CoStar Power Broker for 22 consecutive years.

NAI CIR is the Central Pennsylvania representative of NAI Global, an international organization of real estate professionals with connections literally all across the world. Our transaction and management professionals are among the most experienced and successful in the business, and our platform ensures that our expertise directly benefits our clients.

About NAI Global

NAI Global is a leading global commercial real estate brokerage firm. NAI Global offices are leaders in their local markets and work in unison to provide clients with exceptional solutions to their commercial real estate needs. NAI Global has more than 400 offices strategically located throughout North America, Latin America, Europe, Africa and Asia Pacific, with over 7,000 local market professionals, managing in excess of over 425 million square feet of property. Annually, NAI Global completes in excess of $20 billion in commercial real estate transactions throughout the world.

NAI Global provides a complete range of corporate and institutional real estate services, including brokerage and leasing, property and facilities management, real estate investment and capital market services, due diligence, global supply chain and logistics consulting and related advisory services.

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About CoStar Group, Inc.

CoStar Group, Inc. (NASDAQ: CSGP) is a leading provider of online real estate marketplaces, information, and analytics, specializing in multifamily and single family residential, office, industrial, retail, hospitality, and land property sectors. Founded in 1987, our suite of online services enables clients to advertise, sell and lease their properties, analyze, interpret, and gain unmatched insight on commercial and residential property values, market conditions and current availabilities. CoStar is the industry-leading commercial real estate information, analytics, and news platform. STR provides premium data benchmarking, analytics, and marketplace insights for the global hospitality sector. Ten-X provides a leading platform for conducting commercial real estate online auctions and negotiated bids. LoopNet is the most heavily trafficked commercial real estate marketplace online.,,,, Westside Rentals,,, and form the premier online apartment resource for renters seeking great apartment homes and provide property managers and owners a proven platform for marketing their properties. Homesnap is an industry-leading online and mobile software platform that provides user-friendly applications to optimize residential real estate agent workflow and reinforce the agent-client relationship. offers real estate professionals advertising and marketing services for residential properties. Realla is the UK’s most comprehensive commercial property digital marketplace. BureauxLocaux is one of the largest specialized property portals for buying and leasing commercial real estate in France. CoStar Group’s websites attract hundreds of millions of unique monthly visitors. Headquartered in Washington, DC, CoStar maintains offices throughout the U.S. and in Europe, Canada and Asia with a staff of approximately 4,800 worldwide, including the industry’s largest professional research organization. For more information, visit

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