S. DONADIC INC is a Construction Management firm focusing on NYC’s high-end residential construction. What began as a one-man millwork operation has grown into a full-service, construction management, general contracting, service/maintenance and architectural millwork firm. Founder Steve Donadic continues to helm the millwork facility, while Principal Johnny Donadic leads the firm along with a seasoned management team and a slate of experienced senior project managers. SDI is highly respected in the industry. We are known for our delivery of high-quality workmanship and the attention to detail that is expected from a family-run business.