DSP Janitorial Services is a full service janitorial company headquarted in Belmont, California.  Original founded in 1969 in San Mateo, recently relocate to Belmont to better serve the entire San Francisco Bay Area.

DSP’s workforce of over 70 employees, includes 8 qualified managers and supervisors.  Our management staff all have an average of more than 7 years experience.  Our service crews are all well trained.

DSP provides cleaning and maintenance services for all types of businesses.  Our clients include large office building, bio tech laboratories, electronic manufactures and warehouses.  We also provide specialized clean room service.  In addition we conduct new construction clean up and offer a full line of janitorial and sanitary supplies and equipment.