Corporate Responsibility Report

Read the latest annual corporate responsibility report from STO Building Group.

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Corporate Responsibility Report

Read the latest annual corporate responsibility report from STO Building Group.

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Read More

Most Recent

News & Insights

Read recent press releases and relevant news from GISI and our partner companies.

GISI Completes Strategic Merger with the LIRO Group
Abbott Construction to join the STO Building Group
Layton and STO Building Group Merge to Form Largest Privately Held US Builder
RC Andersen Construction to Join The STO Building Group
STO Building Group Heads Rankings of Nation’s Largest General Contractors
Construction Management Firm Ajax Building Corp. Joins STO Building Group
West Coast Builder BCCI Construction Joins GISI | STO Building Group

We build
for generations.

Discover more about who we are and why we’re building a different kind of company — one where legacy, collaboration, and shared ownership aren’t just ideals, but the foundation of everything we do.

The GISI Model
The GISI Model