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At Guarantee Electrical Company, our people make us strong, and our experience guarantees our work.  Consistently ranked among the top electrical contractors in the country, we offer more than a century of expertise in electrical engineering, preconstruction, construction, design-build, communications/data systems, and service & maintenance.  Every member of our employee-owned firm is empowered and motivated to provide excellent service and legendary innovation locally and nationally.
 
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When the new $130.5 million, 200,000-square-foot expansion at the Saint Louis Art Museum opens in early 2013, it will boast...

 
 
Our Offices
St. Louis MO
314.772.5400
Granite City IL
618.452.6122
Denver CO
303.373.2400
Benicia CA
707.745.7445
 
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