Servicing Maryland, Virginia, and the District since 1979.

Capital Building Services is pleased to be partnered with Crystal Window Cleaning Company to service our client's external and internal window cleaning needs. In doing so, we offer our clients a one stop shop for all their building cleaning and maintenance needs.


Crystal Window Cleaning Company has provided Residential and Commercial window cleaning in Washington DC, Northern Virginia, Baltimore and Maryland for over 35 years. 


​​​Window Cleaning


  • Interior and Exterior Windows

  • High rise and Low-rise

  • ​Seasonal Cleaning

  • ​Insured

CAPITAL BUILDING SERVICES, INC