About Us

U.S. Building Co. is a premier general contracting company in Flagstaff, Arizona, specializing in high-end custom construction, historic renovations and restorations, remodeling, room additions and small commercial projects.

Our focus is on delivering exceptional results for our clients. Working with our skilled in-house team, owner Sal Unale organizes and monitors all job sites closely, maintaining high quality standards and ensuring that all projects are completed on-time, on-budget, and with no surprises.

U.S. Building Co. prides itself on an impeccable level of quality, and we are commited to values of honesty and integrity. We build relationships with our clients to ensure that their vision is brought to life. By working with only the highest caliber craftsmen in each step of the design and construction process, we guarantee exceptional results.


  • Expert Custom Design and Construction
  • Project Management and Planning
  • Small Commercial Projects
  • Tenant Improvements
  • Historic Renovations and Restorations
  • Highest Quality Building Products
  • In-house Crew for Framing and Fine Woodworking
  • Craftsman and Custom Building Styles
  • Luxury Kitchen and Bathroom Specialists
  • Expert Woodworking and Craftsmanship
  • Interior Design Consultation and Coordination
  • Collaborations with Architects and Designers
  • Collaborations with Landscape Architects and Designers
  • City and County Building Permit Applications
  • Affiliation with National Association of Home Builders (NAHB)
  • All Work Guaranteed
  • Licensed, Bonded and Insured