- Vornado Office Management, Inc.
- Boston Properties
- S.L. Green Realty Corp.
- Newmark Knight Frank
- Jones Lang LaSalle
- Silverstein Properties
- Trizechahn Office Properties
- Balmer Parc LLC
- CBS
- Cushman & Wakefield
- The Trump Organization
- Bloomingdale’s NY
- GVA Williams
- Jeffrey Management Corp.
- Macklowe Management Co., Inc.
- Colliers ABR
- Capital Properties
- Olmstead Properties
- The Colony Club
- Fisher Realty Corp.
- The Ford Foundation
- Brooklake Associates
- Trigon Equities Corp.
- CB Richard Ellis
- Digby Management Co.
- Grubb & Ellic Management Services
- Hartz Mountain Associates
- Rexton Realty Corp.
- Abramson Brothers Inc.
- MTA
- Lincoln Center
- Fitzpatrick Manhattan Hotel
- RFR Realty LLC
- MD Carlisle Corp.
- Petrocelli Electric Compnay
- Royal Realty Corp.
- Rose Associates
- Intesa BCI
- American International Group
- Emmes Realty Management
- Tishman Real Estate Management
- Tiffany & Company
- Bernstein Real Estate
- Tudor Hotel @ the UN
- The Cornell Club
- Brookfield Properties
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- Uniliever
- CB Richard Ellis (CBRE)
- Market Pro
- Commonwealth Edison (ComEd)
- Glen Star Properties
- Hughs & Associates
- Klenisorg Group
- Golub & Co.
- Affinia Hotel
- T-Mobile
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