Meet Our CEO
Charles Han
CEOMy family started GBM after years of seeing commercial properties struggle with inconsistent service, high turnover, and vendors who treated facility maintenance like a commodity. We knew Los Angeles businesses and government agencies deserved better.
As CEO, I’ve built GBM to bring professionalism, stability, and genuine care back into the janitorial industry. Our approach is unique because we focus on the people behind the work—supporting our teams with rigorous training, fair treatment, and clear Standard Operating Procedures (SOPs) so they can deliver reliable, high-quality results every day.
Core Services & Regional Focus: Today, we provide Commercial Janitorial Services for medical facilities, retail centers, corporate offices, and county buildings across the Greater Los Angeles Metro, Orange County, the Inland Empire, and San Bernardino.
Why Property Managers Partner with GBM:
Consistency & Accountability: We don’t cut corners, we don’t disappear after onboarding, and we don’t make promises we can’t keep.
Operational Excellence: Expert management of facility cleaning contracts with a focus on health and safety standards.
Local Reliability: A fully insured, professional staff dedicated to the Southern California business community.

