ABM Industries Incorporated provides integrated facility solutions in the United States and internationally. It offers carpet cleaning and dusting, floor cleaning and finishing, window washing, and other building cleaning services for commercial office buildings, data centers, educational institutions, government buildings, health facilities, industrial buildings, retail stores, sport event facilities, and transportation hubs. The company also provides onsite mechanical engineering and technical services and solutions relating to a range of facilities and infrastructure systems; and parking and transportation services for clients at various locations, including commercial office buildings, educational institutions, health facilities, hotels, sport event facilities, and transportation hubs. In addition, it offers custom energy solutions, HVAC, electrical, lighting, and other general maintenance and repair services comprising bundled energy solutions, energy efficiency upgrades, installations, preventative maintenance, retro-commissioning, and retrofits for clients in the private and public sectors; construction management, energy efficiency upgrades, healthcare support, leadership development, military base operations, and other mission support to the U.S. government entities; and facility management and environmental, food and nutrition, healthcare technology management, and patient and guest services to healthcare systems and hospitals. Further, the company franchises engineering services under the Linc Service and TEGG brands through individual and area franchises; and provides facility solutions to airlines and airports related to access control, aircraft cabin cleaning, shuttle bus operations, and passenger assistance. The company was founded in 1909 and is headquartered in New York, New York.