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About Cleaning Services Group

Cleaning Services Group was founded in 1992 by Dennis O'Brien, who is still president today and has over 25 years experience in the building services business. He built this business by putting the people, products and systems in place to ensure that the customer is satisfied, every time.

"Our customers never worry about maintaining their facilities. We have the dedication and experience to get the job done right."
— Dennis O'Brien, President, CSG

CSG moved into its new headquarters in 2004. The building includes all of the corporate offices, as well as nearly 5,000 square feet of warehouse and maintenance facilities.	The company warehouse and maintenance facility is well-stocked with extra equipment and supplies for taking care of any start-ups or emergency situations. The CSG service staff services, maintains and repairs the company equipment, making sure everything is kept in top shape.

CSG serves customers around the country. With headquarters in New England, CSG has cleaning clients and staff throughout the United States, from Maine to Florida to California. Wherever CSG goes, it makes sure that contract start-ups go smoothly, and that existing clients get excellent service every day.