mega888 Dean T. Yamamoto – Yamamoto Caliboso Hetherington

Dean T. Yamamoto

Member Direct: (808) 540-4501






Dean T. Yamamoto is the Founder and Managing Member of Yamamoto Caliboso Hetherington. He focuses his practice on project development, project finance, and utilities. He is considered a leading legal expert in the fields of energy, regulatory, real estate, and finance law. Dean has been selected for inclusion in The Best Lawyers in America© since 2016, and he is currently listed in the areas of Energy Law, Real Estate Law, Administrative/Regulatory Law, and Energy Regulatory Law.

Dean works with many of the leading energy project developers, owners, and operators in the United States, helping them to plan, entitle, finance, build, and operate wind power, solar power, biomass, biofuels, hydrogen, and other energy projects. Dean’s experience extends to all aspects of energy development and finance, including power purchase agreements, interconnection agreements, equity and debt financing, EPC contracts, siting and other real property issues, governmental approvals and construction, and zoning and permitting.

He also represents developers and lenders of large-scale real estate projects, such as condominium projects, subdivisions, hotels, resorts and golf courses, and commercial properties. His clients include large institutional landowners, institutional lenders and investors, project sponsors, and public and private companies.

Dean’s deep community connections, extensive public service, and industry leadership experience allow him to provide clients with the insights necessary to navigate Hawaii’s commercial, political, and social landscapes. For many years, he was a director or volunteer advisor to Catholic Charities Hawaii.  He is currently chair of the Washington University Eliot Society in Hawaii, and chair of the Washington University Hawaii Regional Cabinet, as well as a member of the executive committee of the National Council for Student Affairs and a member of the Alumni Board of Governors of Washington University in St. Louis. He is a member of the Hawaii State Bar Association, the American Bar Association, and the Hawaii Leeward Planning Conference.

Dean received his Bachelor of Science degree in Civil Engineering from Washington University School of Engineering and Applied Science, and his Juris Doctor degree from Washington University School of Law.





Areas of Practice
  • Energy
  • Real Estate
  • Finance
  • Corporate and Business
  • Affordable Housing
  • Public Utilities
  • Administrative/Regulatory
  • Telecommunications
Bar Admissions
  • State of Hawaii
  • U.S. District Court for the District of Hawaii
  • Ninth Circuit Court of Appeals
  • Washington University, B.S. in Civil Engineering
  • Washington University School of Law, J.D.
  • Hawaii State Bar Association
  • American Bar Association
  • Federal Communications Bar Association
  • American Wind Energy Association
  • Certified Commercial Investment Member Institute
Pro Bono / Community Service
  • Washington University Eliot Society in Hawaii, Chair
  • Washington University Hawaii Regional Cabinet, Chair
  • Washington University Alumni Board of Governors, Member
  • Washington University National Council for Student Affairs, Executive Committee Member