GGC National Contractors was founded on the principles of sustainable construction in November of 2009 by Jennifer and John Castellano.

Specialized in Commercial Retail, Office and Facilities Construction, GGC National claims over 50 national and global industry leaders as customers and provides outstanding and reliable service in a highly competitive and constantly evolving marketplace.

At GGC National our goal is to provide our customers with a frictionless experience, managing every facet of the construction process including engineering, design-build and full service construction management. Our skilled manage each project to completion, and are licensed in every state in the contiguous United States.

Let us bring your vision to life and add your organization to our list of satisfied customers.

If I am crazy enough to do this again, there will be no hesitation in calling on GGC to do the work for me.
Cathleen MalleryStore Owner, Edible Arrangements
GGC foreman are professional, thorough, no nonsense, and independent. They work wonderfully with tenants and local inspectors.
Lori MoranVice President, Ballymoney Real Estate Services, Inc.
GGC has tackled a wide range of assignments for me, and has approached each of one of them with their own unique brand of enthusiasm and expertise. I often rely on GGC for support on time sensitive matters, and have always been completely satisfied with the outcome.
Terry JackovicDirector of Store Construction/Real Estate, American Eagle Outfitters
Given our experience with GGC as both a recipient of their work through the landlord and as a direct customer, I highly recommend their work and staff. They are definitely on my bid list for our next project in any market they serve.
Kenneth G. TunnelDirector-Real Estate, Performance, Inc.

Clients We Have Worked With