DUFFY & DUFFY - Key Persons


Craig Miller - President

Job Titles:
  • President
  • CCSP, CGFM
Mr. Miller has been with Duffy + Duffy since 2007. He joined as a Project Manager, in 2011 was promoted to Vice-President, and in 2015 promoted to President. Mr. Miller is a CPA, a Certified Member of The American Society of Cost Segregation Professionals (ASCSP), a Chartered Global Management Accountant (CGMA), and a Certified Government Financial Manager (CGFM). He has managed large scale commercial construction and public water purification and wastewater treatment plant utilities projects, as well as energy savings retrofit performance contracts. He has served on municipal planning and zoning boards, a tax incentive review committee, a historic preservation district design review board, and on an Ohio School Facilities Commission bond issue oversight committee.

Dennis M. Duffy - Chairman, Founder

Job Titles:
  • Chairman
  • Company Founder
  • Founder
  • Founder & Chairman ( Deceased )
  • Retired Founder and Chairman
DENNIS M. DUFFY, MBA, CPA, (1944-2022). Dennis M. Duffy, retired founder and Chairman, departed this world peacefully on November 30, 2022. Dennis was the founder and Chairman of Duffy+Duffy Cost Segregation Services, Inc., the first Ohio Cost Segregation firm in 2002. His company has grown exponentially over the last 2 decades, conducting commercial property engineering-based Cost Segregation Studies nationwide since 2002. Mr. Duffy leaves a legacy team of highly trained and qualified Cost Segregation professionals in Ohio and Michigan who will continue to deliver the quality of work that he expected in his honor. Mr. Duffy was an Ernst & Young and KPMG alumnus with a background in the construction industry and was knowledgeable in tax law relating to Cost Segregation Studies and EPAct Section 179D. He had been a CPA since 1972, was a long-time member of the Ohio Society of CPAs, and worked with international and regional public accounting firms and as a financial executive in industry and government. His formal education included a BBA in accounting and an MBA in international finance from Cleveland State University as well as extensive construction technology training. He authored many articles on the benefits of Cost Segregation and is a frequent speaker on the topic. Craig Miller (l) and Dennis Duffy. Miller awarded NAIOP Commercial Real Estate Chapter of Northern Ohio Member of the Year. After having record sales in 2014, company founder and Chairman Dennis Duffy decided to turn the day-to-day operations over to Mr. Miller. "Craig Miller is one of the main reasons that our company has experienced unprecedented growth" said Mr. Duffy. "The Duffy + Duffy team has built a great business, and we are well-positioned to go further this year. I look forward to seeing what Craig can do as he expands into new markets I am confident he will lead the organization to new heights." Mr. Miller most recently held the role of Vice-President of Duffy + Duffy. During his 3+ years in this position, the company significantly improved its market position and performance by expanding its services into several new states. Additionally, he increased the amount of Continuing Education that is offered to CPA's, and created educational coursework for Real Estate Agents as well. Mr. Miller is a gifted speaker, and he conducts frequent seminars in both Cost Segregation Studies and Energy Tax Deductions. "I'm looking forward to this tremendous opportunity and responsibility in my new role as President of Duffy + Duffy, the leading provider of engineering-based cost segregation studies," Miller said. "I will work with our dedicated team of engineers to further our Company's market leadership and growth by bringing new levels of innovation, customer experience and value to the marketplace."