Let's begin a conversation about how Guardian can meet your needs with a custom solution.

For questions, concerns, and general inquiries,
please find our contact information below.

Locations and Phone Numbers

1617 Matassino Road
New Castle, DE 19720

P.O. Box 11607
Wilmington, DE 19850

General Inquiries


    To apply for an open position

    Our Safety Commitment

    We have established a Safety Hotline for our employees and the public to use to report unsafe conditions at our job sites or work locations. The purpose of the Hotline is to help us ensure a safe work environment for our employees and the public.
    The Safety Hotline number is 302.834.1000, available 24 hours a day, 365 days per
    You may also contact us by email at gcc@guardianco.com