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. The STO Building Group family of companies—Structure Tone, Structure Tone Southwest, Structure Tone International, Pavarini Construction Co., Pavarini McGovern, LF Driscoll, Govan Brown, Ajax Building Company, BCCI Construction, Layton Construction, Abbott Construction, RC Andersen, and STO Mission Critical—includes over 4,500+ employees located in 50+ offices throughout the US, Canada, UK, and Ireland. We provide a complete range of construction services, from site selection analysis, design constructability review and aesthetic enhancements to interior fit-outs, new building construction, and building infrastructure upgrades and modernization.
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