Western Region


Denver Office

Providing electrical construction and technology installations to the Colorado region since 2003, Guarantee Electrical Company’s Denver operation continues to support growth across the Rocky Mountain region. As a full service electrical and systems contractor, accommodating virtually any delivery scenario from design-build, design assist to traditional plan & spec construction, Guarantee offers a complete menu of preconstruction services. Driven by lean construction principles, our team of Colorado construction veterans offers value engineering and constructability analysis supported by the most advanced Building Information Modeling (BIM) and Virtual Design & Construction (VDC) technologies.

In the spring of 2021, Guarantee Electrical and Berwick Electric officially joined forces, a partnership 100 years in the making.


Berwick Electric

Founded in Colorado Springs in 1921, Berwick Electric is an institution in the community and the go-to electrical contractor for many of the region’s commercial, industrial, institutional and government clients.

Berwick is an independently operating business unit with Guarantee providing a platform of corporate, pre-construction and engineering support functions. The combined experience and horsepower of these two distinguished contractors provides clients with a deeper bench of resources, enhanced purchasing power and inclusive engineering & design services while maintaining a legacy of proven performance and operational excellence.

For more information visit: berwickelectric.com

With a reputation for innovation, collaboration and a commitment to lean construction principles, Guarantee’s Western Branch ranks among the regional leaders in specialty and electrical contracting. Our teams of problem-solvers together with the company’s deep experience with large and technically demanding projects make Guarantee the choice of utilities, governmental and corporate leaders across the Rocky Mountain region. These clients are also well served by our 24/7/365 on call emergency service with its team of specially trained service electricians, supported by Guarantee’s proprietary customer service database.


Have an upcoming project in Colorado or the surrounding region?  Contact Us