EXHIBIT 21 – SUBSIDIARIES OF THE REGISTRANT

Name	State of Incorporation
GreenHouse Holdings, Inc. f/k/a Custom Q, Inc.	Nevada
Green House Holdings, Inc.	Nevada
R Squared Contracting, Inc.	California
Green House Soluciones, S. A. de C. V.	Mexico
Control Engineering, Inc.	Delaware
Ecological Partners, LLC	New York
Root9B LLC	Colorado
IPSA International Services Inc.	Delaware