6. Newmark Grubb Knight Frank
| Address | 125 Park Ave. |
| City | New York |
| State | NY |
| Zip | 10017 |
| Web Site | www.newmarkkf.com |
| Phone | 212.372.2000 |
| Officers | Barry M. Gosin, CEO; James D. Kuhn, President; Jeffrey R. Gural, Chairman |
| Third-Party Space Managed | 627,588,548 |
| Owned Spaced Managed | |
| Total Space Managed | 627,588,548 |