SAN FRANCISCO, February 28, 2005 – ABM Industries Incorporated (NYSE:ABM) will announce its financial performance for the company’s first quarter that ended on January 31, 2005 on Monday (Pacific Time), March 7, 2005 after the market closes.

Early the next day, on Tuesday, March 8th at 6:00 a.m. (Pacific Time), ABM will host a live webcast of remarks by President & Chief Executive Officer Henrik C. Slipsager, and Executive Vice President & Chief Financial Officer George B. Sundby. Individuals interested in participating in the conference call are asked to register at 415/733-4061 by Thursday, March 3, 2005.

“We appreciate the levels of interest and participation in our previous webcasts, and will continue to communicate in this forum about ABM’s financial performance and strategic vision,” said Slipsager, who expects to review quarterly results and include forward-looking statements.

The webcast will be accessible at www.irconnect.com/primecast/05/q1/abm_1q2005.html Listeners are asked to be online at least fifteen minutes early to register, as well as to download and install any complimentary audio software that might be required. Following the call, the webcast will be available at this URL for a period of one year.

In addition to the webcast, a limited number of toll-free telephone lines will also be available for listeners who are among the first to call 877/440-9648 within fifteen minutes before the event. Telephonic replays will be accessible during the period from two to forty-eight hours after the call by dialing 800/642-1687, and then entering ID # 4346231.

ABM Industries Incorporated is among the largest facility services contractors listed on the New York Stock Exchange. With fiscal 2004 revenues in excess of $2.4 billion and more than 73,000 employees, ABM provides janitorial, parking, security, engineering, lighting and mechanical services for thousands of commercial, industrial, institutional and retail facilities in hundreds of cities across the United States and British Columbia, Canada. The ABM Family of Services includes ABM Janitorial, Ampco System Parking, ABM Security Services, which includes American Commercial Security Services (ACSS) and Security Services of America (SSA), ABM Engineering, Amtech Lighting, CommAir Mechanical and ABM Facility Services.