• Guard Management Inc. PPO# 11072
  • GMI Building Services Inc.

Janitorial Services

What We Do

Operating System 1

Implement the process. Empower the workers. Experience the results.

GMI understands that standardization and systemization generate consistent service levels. That is why we employ the innovative, high-performance cleaning process known as Operating System 1, or OS1. OS1 is the only certified ISO 9000 certified cleaning program available and GMI is the first certified OS1 service provider in California.

OS1 is a comprehensive training, work-loading and scheduling system that increases efficiency, cleaning levels, and employee morale. Our standardized process ensures a consistent level of cleaning by dividing tasks among specialists, rather than overloading generalists with more tasks than they can properly handle in a shift. Our janitorial staff follows a standardized process that ensures your facility is cleaned the same way every day.

We adhere to the Janitorial University Philosophy of Cleaning:




Recruiting & General Info






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