Affiliations and Certifications

Green Building

Irwin & Leighton is a member of The U. S. Green Building Council (USGBC).
Our staff includes four LEED® Accredited Professionals.

A number of our project managers and project superintendents have also earn Green Advantage® certificates for demonstrating knowledge of environmentally responsible building practices.


Irwin & Leighton has a strong commitment to remaining at the forefront of current healthcare construction methodology – a key element in successfully completing quality healthcare projects.

A number of Irwin & Leighton staff members, including project managers, project superintendents and project estimators, have achieved certifications in the following specialized healthcare-related training: