Exhibit 21
  Subsidiaries
    of Grubb & Ellis Company
  State ofSubsidiaries

Incorporation1. Grubb & Ellis Advisers of California,
    Inc.

California2. Grubb & Ellis Affiliates, Inc.

Delaware3. Grubb & Ellis of Arizona, Inc.

Washington4. Grubb & Ellis Europe, Inc.

California5. Grubb & Ellis Management Services, Inc.
    (GEMS)

DelawareSubsidiaries of Grubb & Ellis Management Services,
    Inc.:a. Grubb & Ellis Management Services of Michigan, Inc.
    (GEMS of Michigan)

Michiganb. Grubb & Ellis Management Services of Canada,
    Inc.

Canadac. GEMS Mexicana, S. DE R.L. DE C.V.

Mexicod. GEMS of Sweden, AB

SwedenSubsidiary of GEMS of Sweden, AB:1. Grubb & Ellis Management (Ireland) Limited

Irelande. GEMS Korea, LLC

Koreaf. Middle East Real Estate Services, LLC

Delawareg. Grubb & Ellis Management (Beijing), Ltd.

China6. Grubb & Ellis Mortgage Group, Inc.

California7. Grubb & Ellis New York, Inc.

New York8. Grubb & Ellis of Michigan, Inc.

Michigan9. Grubb & Ellis of Nevada, Inc.

NevadaSubsidiary of Grubb & Ellis of Nevada, Inc.:a. Las Vegas Commercial Brokerage, LLC

Nevada10. Grubb & Ellis Consulting Services Company

FloridaSubsidiaries of Grubb & Ellis Consulting Services
    Company:a. Landauer Hospitality International, Inc.

Delawareb. Landauer Securities, Inc.

Massachusetts11. HSM Inc.

Texas12. Wm. A. White/Grubb & Ellis, Inc.

New York13. Grubb & Ellis  RPTA Property Tax
    Advisors, LLC

Delaware14. Grubb & Ellis Capital Corporation

California15. Grubb & Ellis Equity Advisors, LLC

DelawareSubsidiaries of Grubb & Ellis Equity Advisors,
    LLC:a. Grubb & Ellis Apartment Management, LLC

Virginiab. Grubb & Ellis Apartment REIT Advisor, LLC

Virginiac. Grubb & Ellis Equity Advisors, Property Management,
    Inc.

Delawared. Grubb & Ellis Equity Advisors, Transfer Agent, LLC

Delawaree. Grubb & Ellis Infrastructure Member, LLC

DelawareSubsidiaries of Grubb & Ellis Infrastructure
    Member, LLC:1. Energy & Infrastructure Advisors, LLC

DelawareSubsidiaries of Energy & Infrastructure Advisors,
    LLC:1. E&I Advisors Asset Management, LLC

Delaware2. E&I Advisors Manager, LLC

Delaware 167




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State ofSubsidiaries

Incorporation3. Wildcat Power I, LLC

Delaware16. Grubb & Ellis Landauer Valuation Advisory
    Services, LLC

Delaware17. Daymark Realty Advisors, Inc.

DelawareSubsidiaries of Daymark Realty Advisors, Inc.:a. NNN Realty Advisors, Inc.

Delawareb. Grubb & Ellis Realty Investors, LLC

VirginiaSubsidiaries of Grubb & Ellis Realty Investors,
    LLC:1. NNN/ROC Apartment Holdings, LLC

VirginiaSubsidiaries of NNN/ROC Apartment Holdings, LLC:a. NNN Enclave Apartments Leaseco, LLC

Delawareb. NNN Highbrook Leaseco, LLC

Delawarec. NNN Landing Apartments Leaseco, LLC

Delawared. NNN Parkway Crossing Leaseco, LLC

Delaware2. NNN Collateralized Senior Notes, LLC

Delaware3. Grubb & Ellis Healthcare REIT Advisor, LLC

Delaware4. Grubb & Ellis Healthcare Management, LLC

Virginia5. Grubb & Ellis Healthcare REIT II Advisor, LLC

Delaware6. NNN Park At Spring Creek Leaseco, LP

Texas7. NNN 6320 Lamar, LLC

Virginia8. NNN 816 Congress, LLC

Delaware9. NNN Lavaca Plaza GP, LLC

Delaware10. NNN Lenox Park C-F Member, LLC

Delaware11. NNN Met Center 4-9 GP, LLC

Delaware12. NNN Met Center 10 SPE, LLC

Delaware13. NNN/SOF Avallon Member, LLC

Delaware14. NNN 200 Galleria Member, LLC

Delaware15. Grubb & Ellis Housing, LLC

Virginiaa. NNN St. Charles Leaseco, LLC

Delawareb. NNN Sanctuary at Highland Oaks Leaseco, LLC

Delaware16. PCCP/NNN Lavaca/Met Holdings, LLC

Delaware17. PCCP/NNN Northstar Holdings, LLC

Delaware18. Beltway 8 Manager, LLC

Delaware19. Beltway 8 Owner, LLC

Delawareb. Triple Net Properties Realty, Inc.

Californiac. Grubb & Ellis Residential Management, Inc.

Delawared. Grubb & Ellis Alesco Global Advisors, LLC
    (Alesco)

Californiae. Grubb & Ellis Securities, Inc.

Californiaf. Sponsor Manager, LLC

Delaware  168