Donnelly Inc. is a trusted leader in construction consulting and management, serving clients across the region with a focus on quality, transparency, and results. With decades of experience, their team specializes in providing strategic guidance, cost estimation, and project oversight to ensure successful outcomes from start to finish. Whether it’s commercial development, renovation, or large-scale infrastructure, Donnelly Inc. brings deep industry knowledge and personalized service to every project.

Proudly located at SONO50, Donnelly Inc. operates out of our modern office spaces in South Norwalk, CT. Their presence at SONO50 reflects our commitment to hosting innovative and professional firms that drive growth in our community. When you partner with Donnelly Inc., you’re choosing precision, integrity, and a team that delivers from concept to completion.