Cory Trembath Rouillard
Preservation Architect, AIA, APT RP, LEED AP

Cory brings to the team at Henson Architecture her decades of historic preservation experience, as a licensed architect, architectural conservator, and active advocate for climate leadership through preservation. Her award-winning work has included the restoration of significant historical buildings, new construction in a historic context, and work in many unusual circumstances, including relocating entire buildings and reassembling buildings from previously disassembled components. In her role in the office and in her professional outreach, she promotes technical guidance for the appropriate care of existing buildings to both protect our cultural heritage and meet our carbon mitigation targets.
Her past design and construction projects include: the exterior restoration of the Hadrian; the reconstruction of the Tin Building; and the relocation and restoration of Hamilton Grange National Memorial, all in New York; the restoration of the Basilica of the Assumption in Baltimore, MD; the re-erection of Yin Yu Tang in Salem, MA; and the reuse of St. Elizabeths West Campus in Washington, DC.
Cory actively advocates for the critical role of historic preservation in addressing the existential climate threats of our time. She is a frequent speaker on topics including tools for sustainable preservation and the wisdom of inherently sustainable features and vernacular design.
Cory is a past Co-Chair of the Association for Preservation Technology’s Technical Committee on Sustainable Preservation. Since 2011 she has spearheaded the development of the Committee’s Online Sustainable Conservation Assistance Resource (OSCAR). Other initiatives during her tenure included the development of the Zero Net Carbon Collaboration for Existing and Historic Buildings (ZNCC) and the expansion of the Sustainable Preservation Bibliography.
Cory earned her degrees in Architecture and in Building Science at Rensselaer Polytechnic Institute. She was also a guest student at the Eidgenössische Technische Hochschule in Zürich, Switzerland. Prior to joining Henson, Cory was most recently an Associate Partner at Jan Hird Pokorny Associates. Earlier in her career she worked as an Architect in both the Albany and New York offices of John G. Waite Associates; an Architect at the Boston firm Goody Clancy; and a Senior Conservator in the Boston-area office of Building Conservation Associates.
Registered Architect
New York, New Jersey, Connecticut, Massachusetts
American Institute of Architects (AIA)
New York Chapter, Historic Buildings Committee (HBC)
New York Chapter, Committee on the Environment (COTE)
New York Chapter, Carbon Leadership Forum (CLF)
Association for Preservation Technology International (APTI)
Technical Committee on Sustainable Preservation (TCSP) Co-chair
Online Sustainable Conservation Assistance Resource (OSCAR) initiative Co-chair
Association for Preservation Technology Northeast (APTNE) Member
2024
TRADITIONAL BUILDING
APT Presidential Citation
Technical Committee on Sustainable Preservation
2019
APT Presidential Citation
Little Haiti Community Engagement Project
APT Presidential Citation
Symposium: Heritage Values and Climate Action Planning
AIANY Vice Presidential Citation for Public Outreach
Panel Discussion: How Low Can We Go? Historic Preservation and Carbon Reduction
2016
APT Presidential Citation
OSCAR
2023
The New York Landmarks Conservancy
Lucy G. Moses Preservation Award*
Winner for the Church of Saint Mary the Virgin
2021
Traditional Building
Palladio Award *
Winner in the Craftsmanship category for the Restoration of the Hadrian Cornice
The New York Landmarks Conservancy
Lucy G. Moses Preservation Award *
Winner for the Enid A. Haupt Conservatory, New York Botanical Garden
2020
Building Design + Construction Reconstruction Awards
Gold Award *
Winner for the Enid A. Haupt Conservatory, New York Botanical Garden
ENR New York Regional Best Projects
Award of Merit Renovation/Restoration *
Winner for the Enid A. Haupt Conservatory, New York Botanical Garden
2019
The New York Landmarks Conservancy
Lucy G. Moses Preservation Award *
Winner for the Knickerbocker Club
Preservation League of New York
Award for Excellence in Preservation *
Winner for the Knickerbocker Club
2018
The New York Landmarks Conservancy
Lucy G. Moses Preservation Award *
Winner for the Hadrian
North American Copper in Architecture
Restoration Award *
Winner for the Hadrian
2017
Historic Salem
Preservation Award *
Winner for the Salem Probate and Family Court, Salem, MA
Associated General Contractors of Massachusetts Build New England
Performance Award *
Winner for the Salem Probate and Family Court, Salem, MA
2016
Massachusetts Historical Commission
Historic Preservation Award *
Winner for the Old Berkshire Athenaeum (Pittsfield Probate Court)
Boston Preservation Alliance
Preservation Achievement Award *
Winner for the Burnham Building
2015
Preservation Massachusetts
Paul E. Tsongas Award *
Winner for the Burnham Building
2014
Massachusetts Historical Commission
Historic Preservation Award *
Winner for the Frederick Ayer Mansion
2012
Preservation League of New York
Award for Excellence in Preservation *
Winner for Hamilton Grange
The New York Landmarks Conservancy
Lucy G. Moses Preservation Award *
Winner for Hamilton Grange
2011
AIA Eastern New York State
Honor Award *
Winner for Hamilton Grange
2010
Traditional Building
Palladio Award *
Winner for the Basilica of the Assumption
2009
AIA National
Honor Award *
Winner for the Basilica of the Assumption
2008
AIA New York State
Citation in Design Award *
Winner for the Basilica of the Assumption
2007
Faith & Form
Religious Architecture Award *
Winner for the Basilica of the Assumption
2004
AIA New York State
Citation in Design Award *
Winner for Yin Yu Tang
Wood Design & Building Magazine
Wood Design Award *
Winner for Yin Yu Tang
* – for work completed in a previous office
SEPTEMBER 2025
Philadelphia, Pennsylvania
April 2025
Columbia University Earth Day Panel Discussion
Building Resilient Futures: Collaborative Paths to Net Zero
New York, New York
May 2025
Classic Planning Academy Guest Lecture
Traditional Design and Resilience
Pablo Alvarez Funes
Online
MARCH 2025
PRESERVING THE RECENT PAST 4 CONFERENCE
Boston, Massachusetts
FEBRUARY 2025
COLUMBIA UNIVERSITY GUEST LECTURE
EMBODIED WISDOM
Françoise Bollack
New York, New York
COLUMBIA UNIVERSITY GUEST LECTURE
EMBODIED WISDOM
Françoise Bollack New York, New York
Occupations
Podcast
April 2024
Traditional Architecture Gathering 2024
Embodied Wisdom: Traditional Features for Carbon Reduction.
Online
September 2023
Columbia University Guest Lecture
Sustainable Features of Vernacular Design
Françoise Bollack
New York, New York
August 2023
NYC Department of Design and Construction
Climate-Based Design for Carbon Reduction
Scott Henson
New York, New York
July 2023
Classic Planning Academy
Guest Lecture
Traditional Sustainable Design
Pablo Alvarez Funes
Online
Bruges Summer School of Architecture & Planning
La Table Ronde de l’Architecture
Guest Lecture
Traditional Sustainable Design
Nadia Everard
Bruges, Belgium
March 2023
Traditional Architecture Gathering 2023 Panel Discussion
Deep Green – 21st Century Well-Building
Nadia Everard, Carolina Cabra, Colum Mulhern, Stephen Tilly
Online Conference
Oct-Nov 2022
PastForward National Preservation Conference
Stephen Tilly, Matthew Bronski
Online Conference
June 2022
Traditional Building Conference
The Quiet Wisdom of Climate-Based Design
Newport, Rhode Island
April 2022
Politechnika Łódzka Panel Discussion
Climate Change and Historic Preservation
Jonathan Spodek, Carl Elefante, Amanda Webb
Łódź, Poland
February 2022
APTNE Symposium
The Quiet Wisdom of Climate-Based Design
Hudson, New York
November 2020
North America Regional Climate Heritage Forum
Online
February 2020
New York University Guest Lecture
Historic Preservation as a Leader in Carbon Mitigation
Gregory Dietrich
New York, New York
September 2019
AIANY Panel Discussion
Scott Henson, Paula Zimin, Michael Ingui, Jeff Murphy
New York, New York
December 2018
Peer to Peer Network
Meet OSCAR
New Haven, Connecticut
November 2015
APT Conference Panel Discussion
Bricks and Bytes: Technology and Tools for the Digital Age of Preservation
Ed FitzGerald, Andrew Ferrell
Kansas City, Missouri
APT Conference
OSCAR: the Online Sustainable Conservation Assistance Resource
Kansas City, Missouri
May 2015
AIA National Convention
OSCAR: An Online Tool for Historic Preservation, Sustainability, and Resiliency
Nancy Rankin
Atlanta, Georgia
Publications
2024
Façade Tectonics Institute SKINS, Issue #138
2020
APT Bulletin: The Journal of Preservation Technology
Mark Brandt – lead author
Reprinted in Traditional Building, September 2020
2017
The International Society for Photogrammetry and Remote Sensing
Carly Farmer – lead author