United States
Our Story
Welcome to STO Building Group: a privately-owned family of top-tier builders who operate collaboratively, innovate uniquely, and join powerfully to put you first.
Unlike any construction company in the industry, each of our builders is empowered to stay true to their distinct business model and heritage, while sharing coveted construction resources like real-time data, lessons learned, trade relationships, bonding, and buying power. That means our clients get the best of both worlds—the personalized experience with local experts, supported by an unrivaled network of global problem solvers.
Together, we’re able to provide a complete range of services, from site selection analysis, design constructability review, and aesthetic enhancements to renovate interior fit-outs for a wide range of terrific clients, new building construction, preconstruction services, and major building infrastructure upgrades and modernization.
OUR VALUES
Client Devoted. Collaborative. Genuine.
We are client devoted.
We put our clients first. We build deep relationships and consistently raise the bar to ensure predictable, quality outcomes with our services and delivery.
We are collaborative.
We are stronger together. We work as a team and encourage curiosity and ingenuity. As partners we foster a culture of safety, respect, and trust.
We are genuine.
Our word is our bond. We deliver what we promise and are committed to providing our clients an unparalleled experience.
Together, We Build The Extraordinary
14
Family of Builders
Brands
54
Around the World
Offices
5100+
Providing Excellence
Staff
$5B
For Projects
In Bonding Capacity
$12B
In 2024
In Construction Revenue
#6
In 2025
ENR Top 400 Contractors