John Caprarelli is a Professional Engineer, Building Official and Certified Access Specialist with 22 years of experience in the construction industry. He has a passion for accessibility and helping others understand the code on a practical level. John has been creating and presenting accessibility courses for 11 years. He was awarded the CALBO Training Institute Educator of the Year in 2022 in recognition of his record breaking student evaluations and the originality of his course materials, specifically detailed diagrams and visuals to assist the understanding and enforcing California accessibility standards. John also offers his website, www.AccessToolkit.com, as a resource for construction professionals. When he's not studying the code, John spends time with his wife, son and daughter, hiking, biking and trying not to get into too much trouble!

Shane Diller is an ICC/AACE Certified Code Enforcement Administrator with over twenty years in local government management. He is a CALBO Past President, former CALBO Training Institute (CTI) Commissioner, and has been teaching for CALBO and at community college since 2011. Shane’s accolades include having been named the CTI Educator of the Year; Building Official of the Year by the California Fire Prevention Officers, and receiving the CTI Course Development Merit Award. Shane holds a doctorate in public administration and has collaborated on research projects focused on improving effective code enforcement and crime prevention strategies with the University of Texas.

Susan M. Dowty, P.E., S.E., currently serves as a Special Consultant for the California Building Officials (CALBO) and has been involved in the development of CALBO’s On Demand program since its inception. She brings more than 35 years of experience in the development, interpretation, and application of building code provisions.

From 2015 until her retirement in 2023, Ms. Dowty served as a Regional Manager for the Government Relations Department of the International Code Council (ICC), where she provided technical and policy support on the implementation and use of the International Codes (I-Codes). Prior to her role at ICC, Ms. Dowty was Vice President for S.K. Ghosh Associates, a nationally recognized seismic and building code consulting firm. In 2006, Ms. Dowty was appointed by the Governor of California to the California Building Standards Commission, where she served from 2006 to 2010.

She holds a Bachelor of Science degree in Civil Engineering from California Polytechnic State University, San Luis Obispo, and a Master of Science degree in Civil Engineering from California State University, Long Beach.

Pete Jackson was formerly the chief electrical inspector for the City of Bakersfield, California. He has been a journeyman wireman since 1984 and has earned five electrical inspector certifications through the International Association of Electrical Inspectors (IAEI) and International Code Council (ICC). Pete serves as an Authority Having Jurisdiction (AHJ) representative to the UL Electrical Council and 37 UL Technical Committees. He also represents enforcement on NEC Code Making Panel 4 and the Correlating Committee for the National Electrical Code. Pete has taught for California building safety organizations and participated in code development for decades bringing a strong ability to connect real-world application with effective code implementation.

Devon Kuhnle serves as the Deputy Building Official for the City of Paso Robles, bringing extensive experience in building safety, code navigation, and public-facing customer service. Beginning her career as an Administrative Assistant, Devon progressed through the roles of Building Technician and Development Services Manager before assuming her current position. Her background provides a unique blend of technical expertise and practical, people-focused problem solving—skills that help offer clear guidance, realistic expectations, and effective support to both the public and interdepartmental teams.

Devon has been an active leader within the Central Coast Chapter of the International Code Council, where she served on the Board and is now a Past President. She is also a graduate of CALBO’s Building Officials Leadership Academy (BOLA), further strengthening her foundation in building department leadership and operations.

A proud Central Coast native, Devon holds a degree in Business Management Economics from the University of California, Santa Cruz. Her commitment to mentorship, professional development, and elevating the permit technician profession continues to guide her work in the building safety community.

Rachel Kuhlen is a leadership strategist, keynote speaker, and curriculum designer with nearly two decades of experience developing high-impact learning for global teams. She’s led large-scale training initiatives across healthcare, biotech, and construction, designing programs that have generated more than three billion dollars in measurable business impact. Known for simplifying complex concepts and translating behavioral science into actionable skills, Rachel helps leaders communicate more effectively, navigate conflict, and drive performance with clarity and confidence. Her work spans leadership development, emotional intelligence, market access training, and multigenerational workforce dynamics, with a consistent focus on creating immediate, practical behavior change.

Ron Takiguchi, PE, CBO is a Certified Building Official and registered Professional Engineer with more than 30 years in building safety and holds a Bachelor of Science degree in engineering. His extensive professional experience comes from his senior leadership roles within numerous California jurisdictions, including Deputy Building Official – District Engineer for the County of Los Angeles, Assistant Community Development Director and Building Official for the City of Burbank, Building Official for the City of Santa Monica, and Building Official for the City of Pasadena. Currently, he is the Senior Vice President of JAS Pacific and serves as the Building Official and Interim Superintendent of Building and Safety for the City of Long Beach. 

Ron is widely recognized in the building safety community for his contributions to CALBO, including service as the association’s President from 2017-2018, CALBO State Code Committee Chair, and a CALBO Education Week and webinar trainer known for clear, concise instruction covering electrical code standards – making him a classroom favorite. He also continues to serve an as adjunct faculty member at UCLA Extension, sharing his insights with emerging professionals focusing on electrical design and construction. Ron has and continues to stay active in code development by chairing key code advisory committees and contributing to statewide standards development, bringing deep technical expertise and a practical approach to code administration.

Dr. Matthew Wheeler joined CALBO in early 2004 and has served as Executive Director since 2006. He is also the CEO of The Wheeler Company, an organization management and government affairs firm based in Sacramento. In addition to his executive leadership roles, Matt has been a part-time faculty member at the University of Southern California’s (USC) Price School of Public Policy since 2012.

Matt’s professional foundation is in government relations. Before leading CALBO, he advocated for multiple organizations before the California State Government and previously served as legislative staff in the offices of two California State Senators.

Matt holds a Bachelor of Arts in International Relations from the University of San Diego, as well as Masters and Doctoral degrees in Public Administration from USC. Matt is also a Certified Association Executive (CAE), a credential awarded by the American Society of Association Executives (ASAE). Early in his career, he earned a graduate fellowship with the State of California and completed internships with the United States Congress, the Humphrey School of Public Affairs at the University of Minnesota, and the United Nations European Headquarters in Geneva, Switzerland.

Brad Wungluck is a seasoned building official with expertise in the application and enforcement of the California Building Standards Code and municipal development services.

Brad is a Past President of CALBO and is currently the CALBO Training Institute Chair.  He is a coauthor of the Significant Changes to the 2025 California Building Code and Significant Changes to the 2025 California Residential Code, co-published by International Code Council (ICC) and CALBO. He has served on key CALBO technical committees, including the State Code Committee (reviewing state code change proposals and coordinating with CBSC), as Chair/Liaison of the National Code Development Committee, and as a member of the Building and Fire Advisory Committee. He has also participated in California Building Standards Code advisory activities related to accessibility and mechanical, plumbing, and energy topics.

Brad holds a Master of Public Administration (MPA) and brings a practical, code-focused perspective to CALBO’s On Demand Training Program, emphasizing technical accuracy and real-world application.