Our Team

The key personnel in the firm have worked together for an average of over twenty-five years.

Eight of our staff are Hawai‘i-registered architects and thirteen support staff offer a cumulative experience of over 250 years.

The firm's long history and the volume of our preservation work, has enabled many members of our office staff to become knowledgeable specialists in historic preservation.


Glenn E. Mason, FAIA, NCARB, is the founder of MAI and former principal of its predecessor, Spencer Mason Architects.  He is a project architect and the principal-in-charge for many of the projects undertaken by the firm. Born and raised in Hawai‘i, Glenn received an M. Arch. from the University of Michigan, Ann Arbor, before returning to Honolulu, where he has built his 40 year career in the preservation of historic buildings and new design.

Renowned for his award winning preservation projects, Glenn has worked on some of Hawai‘i’s most iconic buildings including Bishop Museum, Ali‘iolani Hale, Hilo Federal Building, Arizona Memorial, Hulihe‘e Palace and the last 35 years of maintenance and repair for ‘Iolani Palace, grounds and associated structures.  He was the 2014 recipient of Historic Hawai‘i Foundation’s Frank Haines Award and he was one of the Star-Bulletin’s 2011 “Ten Who Made a Difference”in Honolulu. A past president of AIA Honolulu and the AIA Hawai‘i State Council, Glenn is currently the president of Hawaii Architectural Foundation.

John D. Fullmer, AIA, is a graduate of the University of Hawai‘i’s School of Architecture and joined MAI’s predecessor, Spencer Mason Architects, in 1992.  He was present at the creation of Mason Architects Inc. in 1998, was named a partner in 2004 and is the vice president of the firm.  John specializes in the design and management of large, complex, and often historically significant projects, such as the new construction or renovation of large facilities for the Army and the Navy.  Projects include the award winning renovation of Hawaiian Hall for Bishop Museum; new Child Development Centers at Schofield Barracks, Marine Corps Base Hawai‘i (MCHB), and Joint Base Pearl Harbor Hickam (JBPHH); new and renovated enlisted personnel housing and company headquarters at Schofield, MCBH, JBPHH and Tripler Army Medical Center; new company headquarters and operation facilities at Schofield; as well as most of the repair phases for the 500,000 sq ft Pacific Air Force Command in the historic Building 1102 at JBPHH.

He is a past president of AIA Honolulu, a past member of the Construction Specifications Institute board, and a past president of the AIA Hawai‘i State Council.  He co-chaired the annual Pacific Building Trade Expo by AIA/CSI for 14 years; helping to grow the largest trade show specific to the A/E/C industry in the State of Hawai‘i.

Barbara Sannino Shideler, AIA, joined the firm’s predecessor, Spencer Mason Architects, in 1989, transitioned to MAI as the firm launched in 1998, and became a partner in 2009. She has a B.Arch. and a Graduate Certificate in Historic Preservation in from the University of Hawai‘i.

Barbara has designed the restoration and renovation of significant historic buildings and residences in Hawai‘i, including award winning projects at Kaumakapili Church and the Historic Kaua‘i County Building. She has been the Project Architect for sixteen phases of work at Shangri La: the Doris Duke Foundation for Islamic Art, and she has prepared design guidelines and preservation plans for historically significant projects as diverse as Kōke‘e and Waimea Canyon State Parks, Punahou Campus, and the Hāna Highway Historic Bridge District.  Barbara is the president of the Association of Preservation Technology Hawaii/Pacific Islands Chapter and a member of the organization’s National Board of Directors.


Katie Stephens, AIA, has 25 years of experience in architecture, preservation and restoration. She has worked on several buildings for the National Park Service on culturally and/or environmentally sensitive sites including award winning projects such as the Haleakala Comfort Station, the Pu’ukohola Heiau National Historic Site Visitor Center, the Visitor Emergency Operations Center at Volcanoes National Park, and Paschoal Hall at Kalaupapa.  Katie has also planned the restoration and adaptive reuse of historic buildings on the islands of O‘ahu, Kauai, and Hawai‘i, including six phases of work at Washington Place. She has written historic architectural surveys and management plans for historic buildings at military installations in Hawai‘i, Asia, and the Pacific, and has completed Historic Structures Reports, HABS documentation and National Register Nominations for numerous sites.

Katie received a B.S. Architectural Engineering from the University of Colorado, Boulder, followed by a Graduate Certificate in Historic Preservation and an M.Arch. from the University of Hawai‘i, Manoa. She joined Spencer Mason Architects in 1992, has worked with MAI since it was founded in 1998, and became an Associate in 2016.  She currently serves as the Secretary for the Association of Preservation Technology, Hawaii/Pacific Islands Chapter.

Joy Davidson, AIA, D. Arch, joined MAI in 2002 and became an associate in 2016. She focuses on the preservation and revitalization of historic buildings, both residential and non-residential, on Air Force and Navy installations. During her 23 year career she has also prepared Historic Structure Reports and served as the historical architect on projects to establish and implement historic preservation requirements into their design.  Her award winning work includes the restoration of Hickam Community Center, and Rehabilitation of Historic Homes, both at Hickam Air Force Base.

She received a B.S. from Florida State University, an Arch.D. and a Graduate Certificate in Historic Preservation, both from the University of Hawai‘i. She served on the board of directors for AIA Honolulu, co-chaired its Canstruction competition, currently serves on the Historic Resources Committee, and is the Secretary on the Executive Committee and a Trustee of Historic Hawaii Foundation. Joy also volunteered as an advisor in the reconstruction of New Orleans’ historic homes after Hurricane Katrina

Architects and Project Managers

Angela Thompson, AIA, has 18 years of experience in architecture and restoration. She has worked on a wide variety of projects encompassing the restoration/renovation of historically significant buildings and new construction. She has also completed studies of historic resources on military installations and authored existing conditions reports and evaluations of buildings of historic significance. Her responsibilities have included the preparation of construction documents, research, and report writing. Angela received a B.A. in Architecture from the University of Illinois in Champaign-Urbana, and a M.Arch. and a Graduate Certificate in Historic Preservation from the University of Wisconsin-Milwaukee. She has worked with the firm since 1999.
Robert Ching-heui Kuo, AIA, came to Honolulu to research southeast China’s Hakka mud houses on his way to earning an Arch.D. at the University of Hawai‘i. He joined MAI in 2005 and currently works on projects in new construction and the renovation of existing buildings. Robert has practiced architecture in Taiwan and the United States for over 30 years. He received a B. Arch. from Feng-chia University in Taichung, Taiwan, and an M.Arch. at Washington University.
Joseph Lynch, AIA, NCARB, with 12 years of experience in the design and construction industry, Joe joined MAI in 2017. He has managed the administration of design and construction contracts for large scale transportation projects and coordinated the design and rehabilitation of historic residential properties for the U.S. Military. He spent six years as part of a management team for Honolulu’s RAIL project as an Office Engineer. Prior to that experiences included existing conditions surveys, design, and construction administration for historic properties for the Army and Navy in the Mid-Atlantic region. With MAI, he focuses on design, construction administration, quality assurance reviews, and project management. Joe received both a B.S. in Civil Engineering and a M. Arch with a Graduate Certificate in Historic Preservation from Texas A&M University in College Station, TX. He has also earned certificates in viticulture and enology from Piedmont Valley Community College in Charlottesville, VA and the introductory level sommelier certificate from the Court of Master Sommeliers. He is a member of the National Trust for Historic Preservation, a former board member of the Friends of Hawaii Technology Academy (HTA), and continues to serve locally with the Historic Hawaii Foundation on the Programs committee.
Melanie B.Y. Islam, D. Arch, AIA, CDT, LEED AP BD+C, has ten years of experience in architecture, planning, and sustainable design. She has worked on a range of projects where she focuses her commitment of sustainable thinking and integration into a variety of projects ranging from educational institutions (K-12 to Higher Education) to the renovation and reuse of existing buildings. Melanie received a Doctorate of Architecture (D.Arch) from the University of Hawaii - Manoa and currently serves as the USGBC Hawaii President/MLAB Chair. She is also pursuing her Living Future Accreditation under the International Living Future Institute.

Andrea Aegerter, AIA, LEED Green Associate, joined MAI in 2017, after focusing on residential renovations and new construction projects in Houston, TX. An architect with four years of experience, her work with MAI includes preservation projects on Oahu and Lanai, and continued residential design. She earned a B. Arch with a minor in green engineering, from Virginia Tech in Blacksburg, VA, and is currently pursuing her LEED AP BD+C. Andrea volunteers with Moanalua High School’s ACE mentor program, introducing interested students to the Architecture, Construction, and Engineering fields through a national design competition sponsored by the Construction industry Round Table (CIRT).
Warren Lau, is a Project Manager and Senior CADD Technician. Warren worked with Spencer Mason Architects from 1987 to 1998, and then joined MAI in 2005. He specializes in the project management of new construction and renovation of existing buildings. He has completed many projects for the National Park Service, the Navy, and civilian clients.


Polly Cosson Tice, has 18 years of experience working with architectural and interior design firms in New York and Honolulu. Working as an architectural historian with MAI since 2003, Polly manages the firm's Research Section, which is responsible for the historic preservation and research projects.

She has extensive experience in field and archival research; authoring historic contexts, architectural inventory surveys, HABS/HAER reports, as well as preservation and maintenance plans for residential and non-residential structures on military installations and at civilian sites in Hawai‘i. She received a M.S. in Historic Preservation from Columbia University.

Ann K. Yoklavich has 30 years of experience as an architectural historian, and has worked with Glenn Mason since 1987 in this firm and its predecessor. During that time, she has been the principal researcher and author of historic resources survey reports, cultural resources management plans and databases, architectural history reports, National Register nomination forms, architectural context studies, interpretive signage for historic resources, and other historic preservation studies. She has conducted field work and research throughout the state, as well as in Japan, Guam, Tinian, and Midway Atoll. She has prepared hundreds of Historic American Buildings Survey (HABS)/Historic American Engineering Record (HAER) reports for federal and state agencies. Ann received a B.A. in Art History from Swarthmore College and a M.S. in Architectural Studies, with a Specialization in Historic Preservation, from the University of Texas at Austin.

Dee Ruzicka joined Mason Architects Inc. as an architectural historian in 2001. As a researcher and author of HABS/HAER/HALS reports, National Register Nominations, historic resource survey reports, and historic context reports, he is skilled in the analysis of historic military facilities, and transportation infrastructure, including bridges, roads, railroad structures, and wharfs. He received a B.A. in American History, an M. A., American Studies, and a Graduate Certificate in Historic Preservation all from the University of Hawai‘i, Manoa.
Lesleigh Jones joined MAI as an architectural historian in 2009. After serving as an aerospace ground equipment mechanic for the Air Force in New Mexico and Turkey she earned a Graduate Certificate in Historic Preservation and a M.A. in American Studies from the University of Hawai‘i. She conducts archival research, analyzes and photographs historic structures, develops management guidelines, and writes HABS reports, architectural inventory surveys, and treatment plans.
Angie Westfall has over 20 years of experience in architecture and architectural history. Her responsibilities have included review and compliance at the federal, state and local level, both in Hawai‘i and on the mainland, as well as completing historic studies and reports on various private, state, and military facilities. She has also acted as Project Manager/designer for various retail, commercial, residential, and historic preservation projects. After receiving a B.B.A. degree in Marketing, she went on to earn an M. A., Architecture and a Graduate Certificate in Historic Preservation, all from the University of Hawai‘i Manoa. Angie joined MAI in 2014. She currently serves as a Board member of DOCOMOMO US/Hawaii Chapter.
Trina DeNuccio has over 10 years of experience working with architectural and interior design firms in the U.S. and throughout Asia/Middle East. She joined MAI as a preservation specialist in 2015. Her responsibilities include archival research, architectural inventory surveys and fieldwork, development of design guidelines, preservation treatment plans, and writing of National Register nominations. Trina has a BS in Renewable Materials/Wood Science & Engineering from Oregon State University, and recently completed the Graduate Certificate in Historic Preservation from the University of Hawai‘i and is also pursuing a M. Arch, with a focus on architectural conservation. Trina serves as a board member of the Association for Preservation Technology (APT) Hawaii/Pacific Chapter and is an associate member of the American Institute of Architects (AIA).

Designers, DraftspersonS & Administrators

Evelyn Cabradilla is a Senior CADD Technician with over 20 years of experience. She was in the Architectural Drafting Technology program at Leeward and Honolulu Community Colleges and joined the firm in 2002. Evelyn works with project managers to put together working drawing sets, using AutoCAD and Revit. She also trouble shoots computer problems in the office and is the liaison with the IT supplier.
Elena Brown, D. Arch, joined MAI in 2015 after receiving her Doctor of Architecture and Graduate Certificate in Historic Preservation from the University of Hawai‘i Manoa. She received a Bachelor in Fine Arts degree in Architectural Design with a minor in Art History from the University of Massachusetts Amherst. Elena was born and raised in Hilo, and is working towards licensure in the State of Hawai‘i.
Chysen Nagao, joined MAI in 2016 with an interest in creating spaces unique to their locations and environments, and the adaptive reuse of existing spaces. Before joining MAI, Chysen had the opportunity to work on both the Lihue Town Core Masterplan on Kauai, and the most current renovation of the Hilo Naniloa Hotel on the Big Island. In 2014, he received a degree in Environmental Design (B.Envd) from University of Colorado at Boulder. Chysen was born and raised on Kauai, and is working towards licensure in the State of Hawai‘i.
Rosanne Roman joined MAI’s predecessor, Spencer Mason Architects in 1989 as the office manager and was part of the transition of the firm to MAI. Rosanne is the welcoming voice that greets your call. She also manages billings, payroll and administrative responsibilities.
Shannon C. Hines, LEED AP O+M joined MAI in 2011. She coordinates and assembles proposals and responses to RFPs, helps maintain the web page, provides assistance on various internal projects, and shares her passion for pre-cycling, reuse and the reduction of waste. Born in Massachusetts, Shannon attended Boston University receiving a B.S. in Photojournalism.