Superior Building Services, Inc. (SBSI) is a privately owned and operated company headquartered in downtown Washington, D.C.SBSI is a multi-disciplined service company providing commercial cleaning, HVAC and construction services. From our downtown based operations center, we can provide unparalleled response times to service requests from our clients.Superior Building Services, Inc. is comprised of approximately 230 employees dedicated to providing superior service at a competitive price. Our clients range from Fortune 500 companies to security sensitive government agencies.