JANITORIAL SERVICES & FACILITY MANAGEMENT EXPERTS. For over 40 years, PMM Companies has been dedicated to providing the highest-quality commercial janitorial and facility maintenance services to a broad range of businesses. PMM specializes in meeting the unique janitorial and facility needs of schools, universities, office buildings, churches, synagogues, retail chains, apartment complexes, government buildings and industrial facilities. PMM's success in serving 30 million square feet of space in Maryland, Virginia, Florida, and Washington, DC, results from PMM's commitment to quality, knowledgeable leadership, outstanding resources and an ability to provide customized services at competitive prices. PMM customers rely on our trained staff to meet all their janitorial and facility management needs. We work hard to exceed expectations, and PMM is backed by superior training, comprehensive service management, quality assurance programs, and personal attention. PMM has reinforced its position as a high-quality janitorial provider by making a commitment to green cleaning and facility management practices companywide. Because we care about our client's health and the environment, PMM earned GS-42 Green Seal Certification. As a result of these efforts, we can now help any building or institution become LEED (Leadership in Energy and Environmental Design) certified.