Time Master Building Maintenance is a family-owned and operated company with more than 5,000 employees. Founded in 1971, we're one of the largest janitorial service companies in the Southern California. Our size and scope allow us to be cost-effective while our commitment to quality and service make us exceptional. Our headquarters is on the West Coast with branch offices in 9 western states. We have remained successful in our growth by recruiting professional management and staff. Our highly skilled management team is among the strongest and most experienced in the industry. Merchants offers a full complement of janitorial and window cleaning services. In addition, our sister companies Guard Systems, Inc and Merchants Landscaping Services provide our clients the option of a multitude of services under one corporate banner.