QB Intermediate Holdings, LLC, Quality Built, LLC, Foresite Technology Solutions, LLC (f/k/a QB Technology Co., LLC), SMC Systems LLC (d/b/a SkyeTec), SkyeTec Engineering Services, LLC, and DuctTesters, Inc.

A group of privately held companies providing building envelope testing, quality assurance, mechanical and HVAC commissioning, and specialty construction services to commercial and residential construction markets in the United States. Operations include building envelope testing (DuctTesters), mechanical and controls services (SkyeTec / SMC Systems), and construction quality management (Quality Built).