The Firm

Who We Are

Flatiron Group is a full-service architecture, interior design, and development firm focused on client success with a foundation based on service and communication.

With a diverse leadership team and talented staff, we provide our clients with an unrivaled level of expertise and service. We are passionate about developing projects and cultivating relationships that stand the test of time.

The Team

Thomas mccash, RA, CBO, MPE



Tom has 30 years of experience as a registered architect and 25 years as an attorney. He has certifications as a Building Official, Master Plans Examiner, and is recognized as a code expert in both the architectural and legal communities.

Tom’s combination of technical architectural precision, deep knowledge of accessibility and building codes, and legal background make him unique in the architectural field. I have known Tom for over 20-years. His kind demeanor, consistent performance, and deep skillset have been evident in every project he accepts.

Paul Gresham, Architect

Don Hasulak



Don Hasulak founded Flatiron Group in 2016 and left this world far too soon.
We remember his passion and sense of humor.