McCarthy Building Companies General Contractors McCarthy Building Companies Visit Website 2401 15th Street, Ste. 350 Denver, CO 80202 720-931-5340 About Map About McCarthy is a general contractor that has a long history of building facilities that drive greater value. We are committed to helping out clients achieve their strategic goals on every project we do. What's Nearby? Distance: 5 10 15 20 25 50 mi.