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Subcontractors - STO Building Group
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Driving the Project in the Field

Throughout the course of our history, the STO Building Group has developed a strong working relationship with the subcontracting community. By fostering valuable relationships with the trade community, we have been able to successfully complete every project undertaken.

In order to provide the service our clients require, we work with reputable, experienced firms that are both committed to delivering quality and meeting the objectives of a project. As our market coverage has grown (both in terms of project type and geographic coverage) and our workload has increased, we have continuously reached out to the subcontracting community to support our projects and supplement our technical expertise.


To become a subcontractor with the STO Building Group, each subcontractor must demonstrate that it is a viable, productive company. As a condition of working on projects for STO Building Group, the subcontractor must also review, accept and abide by the applicable Supplier Code of ConductGo to Through an extensive prequalification process, we analyze the subcontractor’s past performance, current workload, safety record, and financial stability, among other selection criteria. The prequalification process helps STO Building Group identify the most qualified, reputable subcontractors in the industry.

Required documents to become a subcontractor:

  • Copy of W-9
  • List of company license numbers
  • M/W/LBE information, if applicable
  • Insurance certificate with all applicable endorsements
  • Independent verification letter supporting your EMR for last five years
  • OSHA 300 logs from last five years
  • Safety program manual
  • Financial Statements for your Company’s most recent fiscal year end
  • Bank letter verifying Lines of Credit and available credit
  • Dun and Bradstreet information
  • Surety information (sunshine letter)
  • References
  • List of current projects
  • List of recently completed projects
  • Current backlog

Become a Prequalified Subcontractor

To become a prequalified subcontractor for the STO Building Group, please contact the appropriate individual in your nearest location, listed below.

United States

New York Metro


New England




Structure Tone – New Jersey & Pennsylvania

Meghann Riordan
732.362.3256Go to tel:7323623256


Structure Tone Southwest

Wendy Moreland
713.650.6420Go to tel:7136506420


Ajax Building Company

Jeff Chamberlain
727.394.3241Go to tel:7273943241

Global Services


Govan Brown

Jennifer McCoy
416.703.5100Go to tel:4167035100 ext. 270

UK & Ireland

For our UK and Ireland Partners, please complete the relevant Subcontractor Prequalification form.

Our Supplier Codes
UK Prequalification Form
Anti-Slavery Statement & Policy
Ireland Prequalification Form

For More Information


Semos Epitropakis 
212.251.9530Go to tel:2122519530