commercial plumbing: our people


  • Randal Hiraki
  • President


    Randy began his career in the construction industry as a plumbing apprentice more than 30 years ago. He learned the nuts and bolts of the trade on his way to earning his journeyman plumbing license. With his experience, he provides a thorough knowledge of the construction trade and the skills and understanding of the fundamentals of managing a business. Randy was selected as the 1997 Small Business Person of the Year for the City and County of Honolulu.



Mark Suzuki

    Vice President


    Mark has more than 30 years of experience in estimating, project management, office management and safety issues in the mechanical contracting industry. He is the former president of the Hawaii Chapter of the American Society of Heating and Refrigerating and Air Conditioning Engineers (ASHRAE) and the Plumbing and Mechanical Contractors Association of Hawaii (PAMCAH). With Randy, he shares in the responsibility of supervising office and field activities.




Suzanne Miyakawa

    Corporate Secretary & Accountant


    Suzi has 20 years of experience in the construction industry and four years of experience in public accounting. She is responsible for all accounting functions for our company. She graduated from the University of Denver with a Bachelor of Science in Accounting.




Seated (left to right): Henry Lee, Randy Inaba (Controller), Randy Hiraki (President), Mark Suzuki (Vice-President), Curt Balanay and Kenji Takanishi.
Top row (left to right): Joseph Whitford, Scott Gibson, Troy Higashi, Alan Pabalan, Kyle Kaneshiro, Galenn Nitta, Wendall Kailihiwa, Bryan Ishii, Travis Jones, Jeremy Diamzon and Alan Nakamura.


commercial plumbing residential installations




Top row (left to right): Kathryn Yamauchi (Business Manager), Huyen Tran, Jercel Tamayoshi, Jayme Ide, Mai Ho and Jandi Saito (Safety Officer).
Seated: Berdina Kubo, Randy Inaba (Controller), Suzanne Miyakawa (Corporate Secretary) and Darlene Nakashima.






Randy Inaba

    Chief Financial Officer


    Randy is responsible for the financial and administrative functions of the company. He has more than 20 years of experience including five years in public accounting, nine years as Controller in the retail industry, seven years as Chief Financial & Administrative Officer for a law firm, and most recently as Vice President of Finance & Administration for Oahu Transit Services, Inc. He graduated from the University of Hawaii at Manoa with a Bachelor of Business Administration in Accounting.



Carol Tengan

    Senior Estimator


    Carol started with Commercial Plumbing in 1998 and is currently responsible for estimating and material take-off. She worked as a draftsperson for seven years, as a project coordinator for seven years and an estimator for six years. Carol received an Associate in Science in Drafting from Leeward Community College and a Bachelor of Science in Mechanical Engineering from the University of Hawaii.