Keystone Construction & Maintenance Services is a leading power generation and industrial contractor serving the Northeastern United States and beyond.   As a prime contractor, we offer a single source solution for your new projects, renovations, retrofits or plant needs.

Our professional staffs of engineers, managers, supervisors, and craftsmen have numerous disciplines including mechanical, civil, electrical, and structural.   Combined, our staff offers turnkey support to help solve your problems and meet your facility needs.  

Specializing in an array of building maintenance services, including boilers & gas path systems, power & process pipe, rigging and erecting, turbines (gas, steam or hydro) & balance of plant, structural steel erection, and building/structures, we further have the necessary finite expertise and capabilities to address the more specific needs of your plant systems and equipment.

Professionalism, timeliness, and attention to detail are the hallmarks of our business.   Given the opportunity we will meet or exceed your expectations.