Cover and list page by ENR

Jon Keller

Do you know American Commercial Glass Inc., a glazier based in West Palm Beach, Fla.? Founded in 2021, the specialty contractor colorfully describes itself as “not a residential glass shop that occasionally takes commercial work” and “not a sub that submits shop drawings when [it] gets around to it.”

For ENR readers, American Commercial Glass is a new entrant on the 2026 Top 600 Specialty Contractors ranking, debuting at No. 600 and reporting 2025 revenue of $6.2 million. Leading the list in 2026 at No. 1 is energy contractor Quanta Services, noting an increase in revenue that pushed its reported figure to $28.48 billion.

Presented in print for 49 years, and featured in this issue (see p. 71), as well as on enr.com, the Top 600 ranks companies that represent roughly one-thousandth of the 597,000 specialty trade contractors that the U.S. Census Bureau says work in commercial and residential construction.…