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STO Building Group is a family of construction companies committed to setting the highest standards of excellence in everything we do. We believe the key to success is building lasting relationships and always putting our clients first.

As an employee-owned enterprise of builders, we serve as a foundation and center of excellence for our companies to learn, expand, and propel themselves into the future. Defined by authenticity and transparency, we celebrate our people, their local knowledge, dedication to craftsmanship and safety, and the strong relationships they have with their communities.

The STO Building Group family of companies — Structure Tone, Structure Tone Southwest, Structure Tone International, Pavarini North East Construction, Pavarini McGovern, LF Driscoll, LF Driscoll Healthcare, Govan Brown, Ajax Building Company, BCCI Construction, Layton Construction, Abbott Construction, and RC Andersen — includes over 4,000 employees located in offices throughout the US, Canada, UK, and Ireland. We provide a complete range of services, from site selection analysis, design constructability review and aesthetic enhancements to interior fit-outs, new building construction, and building infrastructure upgrades and modernizations.

Top 20 Contractor by Engineering News-Record

$2.5 Billion in bonding capacity

Experts in projects from 1,000 to 1.5 million+ sf

45 offices across US, Canada, UK & Ireland

$9 Billion in annual construction volume

4,000+ staff

Family of Companies


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Interested in joining BCCI’s team? Visit our Open Positions page to see if any of our job openings match your experience and career goals.

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