418 Iowa St. | Sioux City, IA 51101

P:712.255.1645 | F:712.255.0628

"Our vision for the future is to be the contractor who customers look to partner with to help provide solutions"


-James Olson, President

Read more of what James had to say in the Sioux City Journal here.

"Interstate Mechanical takes a Design Concept and brings it to life! Their team listened to our ideas, formulated a clear plan, and executed on time and on budget."


-Kevin Schmidt - Tucket's Design Inc.

-Lucas Kertzleben - Vision Builders

             (Perspective Insurance Project in Sioux Center, IA)

"Interstate Mechanical Corp has consistently produced quality work. They pay close attention to detail and treat every job with utmost importance. This is why they are a company that we have no problems working on numerous jobs with. They have knowledgeable project managers and employees that communicate well amongst each other and with their clients."


Brent Koch - CMBA Architects

(Dakota Valley High School Project)

"It's great to know that Interstate Mechanical doesn't just serve businesses in Sioux City. They are a resource for creative solutions throughout all of Northwest Iowa."


Courtney Koch - CMBA Architects

(Spencer High School Project)