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At 406 Engineering, we commit ourselves to embracing your project as if it were our own. With offices in Missoula and Kalispell, we provide quality services to the heart of Western Montana. Driven by our commitment to deliver excellent customer service with an uncompromising work ethic, our experienced team of engineers will help you with all your civil engineering, land use planning, and surveying needs to make your property dreams into a reality. From individual rural systems to large urban developments and subdivisions, we are able to take a project from conception to final documentation, handling all that is needed between. Whether our clients are first time property owners or seasoned professional developers, we believe that looking at a project through our client’s eyes gives us the perspective needed to provide the best results for each project.


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  • Land Division Survey/Boundary Line Survey 

  • Site Survey/Topographic Mapping 

  • Construction Staking 

Civil Engineering

  • Site Development Feasibility  

  • Wastewater Treatment System Design 

  • Water System Design 

  • Sewer System Design 

  • Stormwater Design 

  • Roadway Design 

  • Construction Management 

  • Stream Permitting

Land-Use Planning

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  • Conceptual Site Development 

  • Zoning Compliance 

  • Major/Minor land use planning  

  • Major/Minor Subdivision applications   

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