About STO Building Group (STOBG)
STO Building Group (STOBG) is a privately owned family of construction companies headquartered at 330 West 34th Street in New York City. The group says it was founded in 1971 and that its member builders retain their own business models and heritage while sharing resources such as bonding capacity, buying power and trade relationships. Member brands named on its site include Structure Tone, LF Driscoll, Pavarini McGovern and Ajax Building Company, and the group reports operations across the US, Canada, the UK and Ireland.
Its work is described as construction management and general contracting for commercial and institutional buildings, covering new construction, renovations, interior fit-outs and infrastructure upgrades. Listed services include preconstruction, sustainability consulting, virtual design and construction, and elevator construction consulting. Project types mentioned range from corporate headquarters and hospitals to data centers, hotels and museums. Its New York headquarters is in Manhattan, and Structure Tone lists a New York, NY office among its locations.
| Type | Organization |
|---|---|
| New York offices | New York, NY |
| Phone | 212-481-6100 |
| Website | stobuildinggroup.com |
| Registered NY attorneys | 9 |
Organization profile based on its official website and public sources (reviewed October 30, 2026). Attorney list from the New York State Unified Court System registration data. Not affiliated with STO Building Group (STOBG).
Registered attorneys
Jeffrey Rosenstein Currently registered Danielle Simone Currently registered Leah Ramos Currently registered David Smetana Currently registered John Frega Currently registered Andrew Ronci Currently registered Gail Malone Currently registered Mathew John, Currently registered Flora Donovan Currently registeredRegistration status can change at any time. Confirm any attorney's current status through the official New York Attorney Search.