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A Full Service Janitorial Company


About Us


Our commitment to hard work has made us a success since 1988. Read More


We provide the latest available technology to deliver the results you require.

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Our management team's direct communication with our valued customers ensures a long lasting relationship.

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Bob Headshot

Interstate Maintenance was founded by Bob Weller in 1988 as a janitorial cleaning firm in suburban Philadelphia. By dedicating itself to customer service and in partnership with its clients, Interstate has grown into a full service commercial cleaning company, with clients across the United States.

Interstate’s growth has been natural and organic, based on its core belief of delivering the highest quality cleaning service in the industry. Interstate is not a franchise or a subsidiary, and remains independently owned. We now employ a staff of over 1,000 while still continuing to provide the same personalized service commitment to our customers.


“I have known Bob Weller and used Interstate Building Maintenance Corporation for over 8 years. Bob and his team performed at the highest level and were always open to comments, reviews, or suggestions on changes to make the service level even higher.”
Brian W., Vice President