About Us

We specialize in the tough demolition and excavating jobs no one else can do.

Grant Mackay Demolition Company

About Grant Mackay Demolition Company

The Mackay family have been serving the USA since 1947. Grant Mackay Demolition Company is a 4th generation demolitions company and is now the largest demolition contractor in the mountain west.

Grant Mackay Demolition Company has completed some of the largest demolition projects in the nation. These projects include:

  • Utah State Capitol: selective demolition project
  • Geneva Steel Project: total demolition project of a steel mill covering 1,800 acres and over 5 million square feet of structure, including over 260,000 tons of steel removal
  • City Creek Center: Block 74, 75 & 76 Downtown Salt Lake City; 3 million square feet in building demolition including selective and technical demolition, all in the heart of a major US city

Grant Mackay Demolition Company has also worked with U.S. government agencies, including many demolition projects at air force bases and military sites.

What We Are About

Grant Mackay Demolition Company is the demolition, excavation and general contractor for your project! Our goal is to provide a service that exceeds expectation with everyone we do business with, provide a safe and good working environment and provide demolition on a national level.

Major Projects


  • Demolition of the Geneva Steel plant in Lindon, UT 
  • Demolition of the Champion Paper Mill in Houston, TX 
  • Demolition of Block 76 in downtown Salt Lake City, UT including the implosion of the Key Bank Tower 
  • Demolition of Block 75 in downtown Salt Lake City, UT 
  • Excavation and selective demolition on the Utah State Capitol Bldg Seismic Renovation 
  • Rice-Eccles Stadium 

We are a full service General Contractor as well completing an office/warehouse building, construction of one and the remodeling of another custom home.

We thrive on the challenge of a difficult project. We also complete these challenging projects on time, and under budget.

Scott MackayAbout Us