Board of Directors

Bill Marzella, President, 2020

Bill Marzella joined the APT DC board in 2016 as the Marketing Committee Chair, then serving as Treasurer for two years before moving to the Vice President position in 2019.  After seven years of experience at EHT Traceries, in 2019 Bill joined the Advisory Council on Historic Preservation as a Program Analyst and Liaison to the Bureau of Land Management.  Bill also serves as a Volunteer for the National Building Museum and is a member of the board of the Latrobe Chapter of the Society of Architectural Historians. Bill received an MA in Historic Preservation Planning from Cornell University and a BS in Architecture from the University of Cincinnati. He looks forward to continuing his work with APT DC as President and benefiting from the experience and expertise of its membership!


Ellen O'Brien, Vice President, 2020

Ellen is originally from Cincinnati, Ohio and graduated from Vanderbilt University with a degree in Civil and Environmental Engineering. She was first introduced to preservation while interning at the Octagon House in college. After graduating, Ellen worked with Clark Construction in DC for two years before going back to school and getting a master's degree in Structural Engineering with a focus in Structural Forensics from Columbia University. During her time at Columbia, Ellen studied structural failures and did research on the prevention of structural collapses. She currently works as an engineer at Silman and is enjoying working on a wide range of interesting projects.

Naomi Doddington, Treasurer, 2020

Naomi Doddington is an Assistant Project Manager and Historic Preservationist with Consigli Construction Company. Recent projects include work at the U.S. Capitol's Olmsted Terrace and the Netherlands Carillon outside of Arlington National Cemetery. She received her MSHP from the joint Clemson University/College of Charleston Graduate Program in Historic Preservation in Charleston, SC. She previously worked with the National Parks Service's Heritage Documentation Programs (HABS/HAER/HALS) and spent many years as a professional photographer. Naomi was honored to be selected as one of the recipients of APT DC's 2017 Emerging Professionals Scholarship which gave her the opportunity to travel to beautiful Detroit, MI where she attended the Preservation Trades Network conference. She has served as APT DC's Treasurer since 2019.

Kathleen Pryor, Secretary, 2020  

Kathleen A. Pryor is a Project Manager-Architect with Innovative Design Ideas.  Kathleen brings over 30 years of hands-on, boots-in-field design/construction project management experience along with a M.Architecture from Catholic University. She has worked on a wide array of award-winning projects in commercial, multifamily, institutional, and ecclesiastical structures; and specializes in both the creative and technical aspects of design & construction, providing quality assurance/quality control, with a focus on historic preservation/rehabilitation projects & studies to meet both National Historical Trust and NPS criteria. She attended the APT/CHA international conference in Ottawa; and led an APT tour through the Peabody Conservatory of Music construction site, nearly a dozen years prior, Kathleen has loyally held APT and its values & vision close to her heart, even while on another side of the world from her local chapter!!


Bryan Fisher, Past President 2019, Outreach Committee & Symposium Chair

Bryan is a registered architect and a Historic Preservation Specialist at GWWO, Inc./Architects. During his career, he has contributed significantly to numerous historic preservation projects including work at the U.S. Capitol, the National Archives, the Smithsonian Institution, the Arlington House, Gettysburg National Military Park, Shenandoah National Park, Abraham Lincoln Birthplace National Historic Site, Hampton National Historic Site, Washington College, the Maryland Historical Society, and many others. He received a BA in Historic Preservation from Goucher College and an M.Arch from the University of Florida. During his postgraduate work, he spent time in Mexico studying vernacular and mid-century regional architecture. He has moderated panel discussions at past Preservation Maryland conferences and was a guest speaker at the 2013 APT DC spring symposium.

Katie Hummelt, Past President (2018)

Katie Hummelt is an architectural historian and preservation specialist at Beyer Blinder Belle. She is proud to work on a variety of public and private projects, contributing to the documentation, preservation, restoration, and rehabilitation of buildings and sites locally and abroad. A native of Alexandria, Virginia, she received a BA in Historic Preservation from the University of Mary Washington and MSc in Architectural Conservation from the University of Edinburgh. After graduation Katie worked for Historic Environment Scotland (HES), where she researched the use of micro-renewables in the historic environment and helped disseminate HES’s research on fabric improvements for energy efficiency in traditional buildings. Katie has been a member of APT DC since 2013 and has served as past Secretary, Events Committee Chair, and Vice President.


Constance Lai, Member at Large, 2019-2020

Constance Lai, AIA, NCARB, LEED BD+C, USACE-CQM, is the Manager of Historic Preservation Services for Grunley Construction. Her expertise ranges from design-build protocols to quality control to sustainability. She has over 16 years of experience in historic preservation and has worked on the Eisenhower Executive Office Building, the Washington Monument, the U.S. Capitol, and multiple Smithsonian Institute buildings. She has given presentations at the AIA-DC Chapter, the University of Pennsylvania, and the National Institute of Standards and Technology. She is a 2016-2017 fellow of the AIA-DC Christopher Kelley Leadership Development Program, a board member of the AIA Architects Foundation, a AIA-AF committee member for the Octagon House, and a board member of the National Preservation Institute. In 2017, she was a recipient of the Richard Morris Hunt Prize, which gave her the opportunity to travel and conduct research in France.


Mary Catherine Collins, Member at Large, 2019-2020   

Mary Catherine Collins is a historic preservation specialist for the U.S. Commission of Fine Arts, where she advises on design and preservation in the Old Georgetown Historic District.  She holds a Master of Science in Historic Preservation from the University of Pennsylvania's School of Design and has been a member of APT DC since 2012. She was a recipient of the Emerging Professionals Sponsorship Program (EPSP) in 2013 and served as APT DC treasurer from 2014 to 2016.



Jean Stoll, Member at Large, 2019-2020

Jean Stoll is a Project Engineer at EverGreene Architectural Arts. After graduating from the Clemson & College of Charleston historic preservation graduate program, Jean came back to NoVA to work at Mount Vernon. She then spent time at Aeon Preservation and later started her own consulting firm, Signature Preservation. At EAA, she works in a wide range of roles on projects like the US Capitol, Cannon House Office Building, and the Jefferson Mem