About the President 

"Throughout my career, I have referred to my clients as "respected friends." 

   As a direct result of that belief our company quickly built a reputation for integrity, teamwork and commitment. 

   Sirius Construction provides the experience to meet the challenge of everyone’s construction concerns; cost, quality, time, and aesthetic values.

   We strive to develop a sense of cooperation between client and our team, offering a balance of leadership and responsiveness to bring your project to fruition.

Gregory L. Nemoff
President & CEO”

About Us 


  • 1996 Missoula Historic Preservation Excellence Award
  • Montana Contractors' Association, Inc. 
  • 2005 Excellence Awards

Montana Contractors' Association, Inc.

  • 2005 Excellence Awards
  • 2005 Winner - Environmental Excellence Award
  • 2005 Special Recognition in Waste Management 

Mission Statement

The mission of Sirius Construction, Inc. is to provide innovative, reliable, and high quality services to clients throughout Montana. We fulfill our mission by developing highly trained loyal employees who work as a team to anticipate, identify, and respond to the client’s needs. We are driven at Sirius Construction to lead the industry by recognizing that every detail of a projects design is a step on the stairs to excellence.

Our Vision

The Sirius Construction, Inc. vision will continue expanding our role as a leader in the construction industry by building relationships with our clients and employees based on performance, trust and confidence. We offer construction services of the highest quality and value to our clients delivered by a team of construction professionals committed to excellence. We are dedicated to maintaining a team environment and working in a cooperative format with owners, design and construction professionals. 

Commitment and Versatility

One of the hallmarks of Sirius Constructions success is its versatility, exemplified by its ability to build or renovate buildings ranging from high-rise office buildings, healthcare facilities, aviation facilities, sophisticated educational and institutional buildings, major retail stores, large car dealerships, historical Renovations, high-end residences, apartment complexes and entire neighborhoods. A Sirius Constructions specialty is the construction of projects within a negotiated guaranteed maximum price requiring a high degree of personalized management with both pre-construction and construction skills.