Janitor Services for commercial property in Maryland

Commercial Building Maintenance, LLC  is a full service janitorial company serving the Washington-Baltimore metro area since 1985. Our goal is to clean your building and make sure it is safely secured when we leave. CMB is locally owned and operated with an experienced staff. Owner and operator Sean Mulgrew founded CBM and has been in the cleaning business for over 20 years.

Nightly Cleaning Services in Frederick Maryland

Office cleaning, medical center cleaning, warehouse cleaning, shopping center cleaning, car dealership cleaning, sports venue cleaning

CBM floor cleaning

I’m Sean  Mulgrew, owner operator of Commercial  Building Maintenance LLC located in Damascus Maryland


25628 Ridge Road
Damascus, MD 20872


Fax: 410-635-2441


“Commercial Building Maintenance (CBM) has been our cleaning service for many years. We have over 100,000 sq ft of space with a third of that being laboratory space in our building. They have always done an excellent job cleaning our building and keeping it in tip- top shape. They also provide us with full time porters who kept going above and beyond what we expected them to do. Also, if there was any issue we encountered we dealt with the owner, Sean Mulgrew directly and the issue was resolved quickly. I would highly recommend Commercial Building Maintenance.” Joe Reese, Celera

» Areas Served

Located in Damascus, MD, CBM LLC services all counties in the Washington – Baltimore Metro area, as well as Northern Virginia.

Give us a call!