Located in Horsham, PA

Corp Office: (215) 675-8500

Corp Fax: (267) 803-0136

Toll Free: (855) 498-6333

A regional tri-state based full service janitorial company

Professional Commercial Janitorial Services


Interstate has been partnering with our customers since 1988.

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Our management staff will provide you with excellent communication and make your office aware of any concerns throughout the facility. Read More


Successful companies work hard to ensure long-term satisfaction with valued customers.

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Welcome to Interstate Building Maintenance Corp.

We are a full-service janitorial company covering the tri-state area of PA (headquarters), NJ and DE. We provide all types of services by our in-house specialists. In addition to daily maintenance programs, our services include, but are not limited to:

  • Raised computer room floor specialists
  • Window cleaning
  • Day cleaning services
  • Furniture/upholstery cleaning
  • Discount for multi-site locations
  • Daily Janitorial services
  • Carpet shampooing/extraction
  • Construction Cleanup
  • Hard surface/tile floor care
  • Restroom detailing services
  • Maintenance & temp. staffing

Interstate’s supervisors and employees are trained to provide positive leadership, be responsive to customers’ needs and show our customers and fellow employees we care.

Direct owner/management support and supervision are integral to our business success.

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Green Friendly

We use environmentally-friendly products in our cleaning services

Certified Specialists

We are LEED certified. Green Cleaning Standard