Civil Construction, Underground Utilities, Excavation, Grading & Site Preparation

Spiers Construction is a third-generation, family-owned civil construction contractor serving Idaho's Treasure Valley since 1973. Led by brothers Aiden and Tristen Spiers, Spiers Construction specializes in excavation, site preparation, underground utilities, and residential and commercial site development. With more than 50 years of experience, Spiers Construction combines established regional expertise with modern equipment and hands-on project management.