Sirius has been building Western Montana since 1979.

Over the decades, we’ve experienced a steady and manageable rate of growth throughout our local building industry. Building numerous landmark projects in Missoula and its surrounding areas, we’ve excelled in the Education, Government, Medical, Multi-Family and Retail industries.

Our Custom Interiors and Historical Renovation work is second to none, and we are the only General Contractor in western Montana with the in-house capability to fabricate and erect ground to mid-rise steel structures. We are a company that prides ourselves on self-performance, staffed with experience tradesmen with the experience and know-how to perform work in all commercial building divisions. Our management staff brings over 100 years of collective experience in the industry, dedicated to a corporate culture where “on-time and in- budget” is more a part of who we are and what we routinely do, rather than a goal we're constantly chasing.

Our door is always open. Stop by our office at 2555 Murphy Street in Missoula. Or call 406-542-0004 and ask to speak with one of our Project Managers about your next building project.

Our Clients

  • Warm Springs State Hospital
  • City of Missoula
  • Anaconda Chamber of Commerce
  • Montana Department of Health and Human Seevices
  • Kwataqnuk
  • Riverside Crossing

Client Testimonials

  • To Whom it May Concern: I recommend Sirius Construction with full confidence based on their performance as our General Contractor on our 4800 sq. ft. pediatric dental practice. The project timeline was Dec. '17 to July '18 and was completed on time, on budget, and the quality and attention to detail met our expectations.
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    Ian Foster
    3 Rivers Pediatric Dentistry
  • Larry Farnes, Missoula County Facilities Director
    Sirius Construction has worked on these projects for Missoula County: PHC West through 5 phases of remodeling and new construction, the Missoula County Administration through 3 phases of remodeling, the remodeling of the Missoula County RVS building, the remodeling the old county print shop into our Risk and Benefits building and work at the Historical Museum. Throughout all these projects Sirius Construction has done a very good job of managing the projects, completed them on time, the quality of their work was excellent (...more)
    Larry Farnes, Missoula County Facilities Director
    Missoula County
  • Robert Skillicorn, VP of Construction
    Temp Right Service has been working with Sirius Construction for more than a decade on projects of many sizes and scopes. Sirius Construction has been a valuable partner in delivering both Design Build and Plan Spec projects for their customers. Sirius Construction’s experience on various types of delivery methods brings the best of both worlds to their customers projects. Sirius Construction and their team of professional estimators, project managers, superintendents and field installation crews work side by side with their subcontractors to meet the customers’ expectations and time frames. (...more)
    Robert Skillicorn, VP of Construction
    Temp Right Service Inc.
  • It is with great pleasure that I write this letter of reference on behalf of Sirius Construction. We have been working with Sirius over the past year to complete the remodel and expansion of our new facility. The approximate value of the work performed is $5.5 million. Staffed with dedicated and motivated employees, Sirius has far exceeded our expectations. (...more)
    Kim Mansch, Executive Director
    Partnership Health Care
  • This letter is my personal recommendation for Sirius Construction Company. Our firm has worked with Sirius on several projects, most recently the Holiday Village Shopping Center and an Office Building for a local business. The Superintendents and Project Managers consistently demonstrated their extensive knowledge of the construction industry, always displaying a strong work ethic and a dedication to success. Their efforts have consistently produced high quality results (...more)
    Martin Noyd, Architect
    OZ Architects
  • The spectrUM Discovery area and its parent organization, the Broader Impacts Group contracted Sirius Construction to perform the buildout of our new location at 812 Toole Ave. We were consistently impressed with both the professionalism and quality of craftsmanship provided by Sirius during this process. The attention to detail and clear communication concerning all aspects of the project created a tailor-made space for our unique needs as a hands-on science museum. (...more)
    Holly Truitt, Director University of Montana
    Broader Impacts Group and spectrUM Discovery Area
  • It is with pleasure that I write this letter of recommendation for Sirius Construction, Inc. In April 2013, Sirius Construction was awarded the bid for a renovation of the medical and dental clinics at Curry Health Center at the University of Montana. This renovation included the complete demolition and renovaticn of the dentai clinic and significant demolition and renovation of the medical dinic. The major challenge with this renovation was that it needed to be completed while the departments remained operational. (...more)
    Rick Curtis
    University of Montana
  • Gregory Kennett
    I worked recently with Sirius Construction Inc. to build a challenging residential project. interviewed several firms and individuals to build this and selected Sirius because of their attention to detail, timeliness and competitive bid. My lawyer looked at a proposed contract and suggested a firm fixed bid contract. Greg Nemoff, gave me the pros and cons of firm fixed bid vs. time and materials (T&M), telling me the detailed construction I was interested in would be better served with the flexibility of the T&M contract. (...more)
    Gregory Kennett
    Ecosystem Research Group, LLC