Cleaning Services Group: Detailed Company Information & Corporate Profile
Summary
Cleaning Services Group was founded in 1992 and operates as an independent company headquartered in Danvers, MA. The firm specializes in facility management within the Greater Boston market and is classified under SIC code 7380.
The company’s specialty portfolio includes comprehensive cleaning services such as facilities management, janitorial solutions, hard floor care, carpet and window cleaning, construction cleanup, and commercial cleaning operations.
With a workforce of 200 to 500 employees and annual revenue between $1 billion and $5 billion, the organization is structured under CEO Dennis O’Brien. Key executive roles include Clint Williams as Senior Vice President of Sales & Marketing, Tim Roux as Vice President of Operations, and Sae Joon Kim overseeing finance.
The business serves a broad array of clients across the Greater Boston DMA and maintains an independent operational model to tailor services to each client’s needs.
| Cleaning Services Group Website | csginc.com |
| Social Links |   |
| Phone Number | 8006836572 |
| Industries | |
| Cleaning Services Group Headquarters Address | 230 North Street, Danvers, MA, 01923 US |
| Company Size | 200-500 employees |
| Specialities & Services | cleaning services , facilities services , janitorial services , hard floor care , carpet cleaning , window cleaning , construction cleanup , commercial cleaning |
| SIC Code | 7380 |
| DMA Code | Greater Boston |
| Founded | 1992 |
| Estimated Annual Revenue | $1B - 5B |
| Operating Status | Independent Company |
| Updated: | 2026-09-12 |
Estimated Website Traffic
The chart shows a growth in traffic to the csginc.com website. In August, traffic increased to 404, compared to 379 in the previous month. The highest traffic in 2026 was recorded in March, reaching 2340 visits.
Workforce Turnover
Length of Employment
Cleaning Services Group's workforce includes employees across a wide range of tenure levels.
3% have been with the company for less than 1 year10% have been with the company for 1 to 2 years20% have been with the company for 3 to 4 years17% have been with the company for 5 to 7 years10% have been with the company for 8 to 10 years40% have been with the company for more than 11 years
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