Across our 38 years in operation,
we keep developing & advancing
Quality Building Maintenance (QBM) is a privately owned commercial janitorial firm with nearly four decades of experience supporting Class A office and institutional properties throughout Washington, DC, Maryland, and Northern Virginia.
Founded in 1986, QBM has evolved alongside the changing expectations of professional property management. While much of the industry remains reactive and outdated, we have continuously refined our service model to deliver consistent quality, operational efficiency, and measurable accountability at scale.
Built for Performance, Accountability, and Continuity
This technology-backed approach allows us to:
• Monitor service execution and inspections
• Proactively address issues before escalation
• Maintain consistent standards across large, complex facilities
• Support client satisfaction without constant oversight
Proven Experience with High-Profile, Large-Scale Assets
QBM has provided long-term janitorial services for some of the region’s most demanding environments, including:
• 1.3 million square feet at the U.S. Department of Transportation for 23 years
• 1.4 million square feet at Constitution Center for 12 years
These partnerships reflect our ability to scale responsibly, maintain continuity, and meet institutional expectations over the long term.
As a result, over 90% of our contracts are extended, significantly exceeding typical industry retention rates.
A Long-Term Partner for Property Managers
We view janitorial services as an extension of building operations—not a commodity. Our focus on accountability, responsiveness, and long-term partnership allows property managers to reduce complaints, protect asset reputation, and focus on higher-value priorities.
Our Approach to Long-Term Janitorial Partnerships
Serving Washington DC, Maryland, and Northern Virginia
Regional expertise and long-term local presence
Operational consistency backed by systems and supervision
Proactive service delivery beyond the written scope
Sustainable practices that protect occupants and assets
Continuous reinvestment in people, equipment, and training
Flexible, fair pricing built for long-term relationships
Technology-driven accountability and transparency
Our People and Proven
Team Cleaning Model
Consistent building performance starts with stable, well-trained teams. At QBM, our employees are the foundation of our service—and a key reason property managers experience fewer disruptions and more reliable outcomes.
We hire locally, invest in our people, and train for both operational excellence and compliance. Field-based instruction is reinforced with ongoing e-learning to ensure safety, consistency, and adherence to building standards.
Our Team Cleaning model is designed for efficiency and accountability. Teams move through the building one floor at a time, with defined task assignments, on-site leadership oversight, inspection, correction, and documented reporting. This structured approach allows us to deliver faster, more consistent cleaning while maintaining clear quality control.
Letters of recommendation
- Service for a 350,000+ sq. ft. of Class A office space
- Service for the Constitution Center, with 1.4 million sq. ft (letter 1)
- Service for the Constitution Center with 1.4 million sq. ft (letter 2)
“In all my experience at other properties over the years, QBM proved to be head and shoulders above the competition”