Janitorial, Commercial Cleaning Washington DC, Maryland, Virginia 

Certified Building Services, Inc. (CBSI) was founded over three decades ago in 1982 to provide comprehensive janitorial services in the greater Washington-Baltimore and Northern Virginia metropolitan areas.

In our thirty year history, CBSI has built a solid reputation as a premium service provider for properties of every size and diversity.  Our longevity is a result of integrity, reliability, and consistency.  We are committed to customer satisfaction and we believe “it is not how many customers we serve, but how we serve our customers.”

Our service programs are flexible and based on customer need.  Our quality service is the direct result of attention to detail by a knowledgeable and experienced staff and management.

Have An Emergency? Contact Us 24 Hours-Per-Day At 1.888.379.6426