About us. HMH Engineering (HMH) is a locally owned, Idaho company providing land surveying, civil engineering and construction engineering & inspection. Since our formation in 2011, we have expanded across Idaho and Montana, including offices in Coeur d’Alene, Lewiston, Meridian, Missoula, Ponderay, Rigby, Twin Falls and Wallace. HMH Engineering is committed to creating and maintaining a workplace in which all employees have an opportunity to par...