About HK Contractors

HK Contractors

George Hartwell began the operations of Hartwell Excavating in 1950, a small construction company with a single backhoe and dump truck, with the focus of the company being digging basements for customers. Shortly after that, Hartwell Excavation also expanded to include small utility work. Then on July 25, 1975, Hartwell Excavation joined forces with Kennaday Paving to create a new company, HK Contractors.

On November 5, 2007, HK Contractors became a part of the Oldcastle Materials family here in the US; and in 2018, Oldcastle Materials and all subsidiaries rebranded under a new name, CRH.

HK Contractors has become a mainstay of Idaho Falls and is one of Idaho’s largest construction and material supply companies. They have since expanded their service area to include Montana and Wyoming. HK Contractors have received numerous local, state, and federal awards for outstanding work quality and performance. HK Contractors, along with the rest of our CRH family of companies, continue to drive safer best practices, high-quality construction materials/projects and lead the industry with the highest levels of integrity.



6350 S. Yellowstone Hwy
Idaho Falls, ID 83402



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Hours of Operation

Monday – Friday 8:00am – 5:00 pm

Landscape Center Hours

Monday – Friday 8:00 AM – 6:00 PM and Saturday 9:00 AM – 3:00 PM