Top 100 Workplace Interior Construction Firms for 2025

STO Building Group, J.T. Magen & Company, HITT Contracting, Clune Construction, JRM Construction Management, Rand Construction, Swinerton, Skyline Construction, and Gilbane Building Company top Building Design+Construction's ranking of the nation's largest workplace interior and office fitout general contractors and construction management firms for 2025, as reported in BD+C's 2025 Giants 400 Report.
Source David Barista, Editorial Director
Jan. 5, 2026
Image by StartupStockPhotos from Pixabay
Image by StartupStockPhotos from Pixabay

Image by StartupStockPhotos from Pixabay

STO Building Group, J.T. Magen & Company, HITT Contracting, Clune Construction, JRM Construction Management, Rand Construction, Swinerton, Skyline Construction, and Gilbane Building Company top Building Design+Construction's ranking of the nation's largest workplace interior and office fitout general contractors and construction management firms for 2025, as reported in BD+C's 2025 Giants 400 Report.

Source: Building Design+Construction's 2025 Giants 400 Report

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