STO Building Group
ConstructionNew York, United States5001-10000 Employees
STO Building Group is a privately held family of construction firms based in New York City. It unites fourteen affiliated builders, each preserving its own heritage while sharing core resources such as real-time data, trade relationships, bonding capacity, and buying power to support collaborative delivery. The group undertakes a broad range of projects—from residential and commercial towers to data centers, hospitals, laboratories, museums, hotels, and educational spaces—along with renovations and repositioning work. Clients in the construction and development space turn to STO Building Group to address complex building challenges through the strengths of a multi-builder platform. Based in New York City, the firm is an equal-opportunity employer; in August 2025 it launched Elevator Construction Consultants to tackle vertical-transport bottlenecks.