CHAtting with CHA - Jeff Birenbaum and Delwyn Williamson on Cost Estimating

Posted March 29, 2021

This week, we’re excited to chat with Business Practice Leader Jeff Birenbaum and Project Team Leader Delwyn Williamson, leaders in cost management. Jeff and Delwyn share their insight into why the use of specialized cost estimating services is growing right now. They also dive into some of the criteria developers should look for when hiring cost estimators for commercial projects, and what the future holds for cost estimating services.

About the Speakers: Jeff Birenbaum is Business Practice Leader, Commercial Services & Cost Estimating, at CHA Consulting, Inc., where he focuses on expanding CHA’s owner project management and cost estimating services to real estate developments along the Eastern seaboard with a focus in New England. With more than 25 years of experience in real estate, development, and construction project management, Jeff has overseen large and complex building projects in hospitality, residential, and mixed-use development sectors. You can reach Jeff at

Delwyn Williamson is a Project Team Leader at CHA Consulting, Inc. With more than 30 years of experience in the A/E/C industry, her vertical cost consulting expertise encompasses all design phases for buildings of all types while specializing in conceptual estimating. You can reach Delwyn at