Welcome to Coastal Building Services serving San Bernardino, California. We are dedicated to providing premium cleaning services in the Southern California region at very competitive rates.  We are pleased to say we have been servicing San Bernardino County  since the inception of CBS.  Our crews of highly trained cleaners and supervisors have provided quality janitorial services to San Bernardino and the following counties in the Southern California region: Los Angeles County, Orange County, Riverside County, San Diego County, Santa Barbara County, Ventura County including Clark County Nevada. . San Bernardino County Is Unique As the largest county that we currently serve, San Bernardino County offered Coastal Business Service the unique opportunity to further refine our business practices so that we could cover a larger area with greater efficiency and still maintain the highest level of cleaning service.  Consequently, our already high performance ratings were able to improve even more. . Our reputation... It is in great part the positive reviews and referrals that we have received from our clients that sets CBS Inc., apart from the rest and makes us a leader in the cleaning service industry for Southern California.  This is a reputation we have worked hard to earn and will continue to maintain by providing your company with the best possible services available.