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

Life Protection, Inc.                                                                                    North Carolina

Control Engineering, Inc.                                                                          Delaware