Eric Hammerberg

Eric Hammarberg

Associate Principal

Eric Hammarberg has been surrounded by construction his entire life, the third generation of a family of building contractors. He has cultivated a technical expertise in craftsmanship and construction, sharing with his team an array of projects. He has worked many aspects of construction, including masonry and carpentry, and found success in historic preservation as a primary form of sustainable building.

Eric’s experience spans from design and project manager for many historic restoration and preservation projects including the New York Public Library’s plaster ceiling restoration, St. Patrick’s Cathedral, the Chrysler Building, the Metropolitan Museum of Art and stabilization at Lefferts Historic House. He has extensive experience conducting condition surveys, preservation methodologies, façade evaluations and restorations, project programming, specification research and writing, and reviewing accessibility, environmental and landmark rules compliance.

His expertise in preservation includes investigation, protection of historic structures adjacent to new construction, repair and restoration of historic stone and brick masonry, repairs of historic plaster and tall urban structures as well as repairs to terra cotta and various roofing materials. Prior to joining Henson Architecture as Associate Principal, Eric spent the last seven years as Associate Principal for WJE Engineers & Architects. Eric brings his vast knowledge of historic restoration across New York City Landmarks, structural and exterior envelope design and investigative expertise to the firm.

Curriculum Vitae

Professional Experience

2019 – Present

Henson Architecture
New York, New York

2012 – 2019

WJE Engineers & Architects
New York, New York

2011 – 2012

Brisk Waterproofing
Ridgefield, New York

1996 – 2011

Thornton Tomasetti
New York, New York

1994 – 1996

Prospect Park Alliance
Brooklyn, New York

1988 – 1994

Robert E. Meadows PC Architect
40 Dover St, New York, New York

1987 – 1988

Arnold Syrop Associates
New York, New York

1986 – 1987

Homeworks Group Design Build
Bedford Hills, New York

1983 – 1986

Hammerberg Design Build
Providence, Rhode Island

1976 – 1983

Hammerberg Construction, Inc.
Dravosburg, Pennsylvania


Rhode Island School of Design
Bachelor of Architecture, Bachelor of Fine Arts
Providence, Rhode Island

Architectural Preservation
New York, New York

Registrations & Affiliations

The Association For Preservation Technology Northeast Chapter (APTNE)
Founding Board Member

2004 – Present
Maplewood Historic Preservation Commission
Class A Member

International Concrete Repair Institute (ICRI) and Technical Committee 410 Masonry Terra Cotta Guidelines


Lucy G. Moses Preservation Award
Winner for the Restoration of the Hispanic Society of America Museum and Library

North American Copper in Architecture Awards
Copper award for Restoration of the Hispanic Society of America Museum and Library

Lucy G. Moses Preservation Award
Winner for plaster ceiling restoration of the Stephen A. Schwarzman Building, New York Public Library

Lucy G. Moses Preservation Award
Winner for Restoration of Gottesman Hall


Fall 2017

AIA New York
“Stewardship of Decorated Ceilings in Great Public Spaces” with Kim Lovejoy and Sarah Kloze
New York, New York

Fall 2016

APT International
“Fibrous Plaster: Specifying Reinforcement Systems for a Robust 19th-c. Technology” with Kim Lovejoy


NYTimes and WNYC Morning Edition
Interviewed for the work at the New York Public Library Rose Reading Room and Bill Blass Lending Room Ceiling Restoration

Fall 2001, Spring 2019

Historic Districts Council
“Emergency Shoring & Stabilization of Historic Structures” at The Shore Thing: A Practical Seminar on Shoring Methods and Case Studies for Historic Buildings

Spring 2010

The History Channel
“Modern Marvels – Chrome” televised broadcast

Spring 2009

International Conference on Protection of Historical Constructions (PROHITECH)
“Protection of Historic Urban Structures During Adjacent Construction”

Spring 2009

Lorman Education Services Seminar
“Historic Preservation: Easements, Tax Incentives and Litigation”

Spring 2009

12th Annual International Preservation Trades Workshop
“Teamwork, Tools, Testing and Intuition: The Architect’s and Engineer’s Investigation and Repair Decision Making Process”

Spring 2009

ICRI Connecticut Chapter
“A Place for the Trades”

Spring 2008

Lorman Education Services Seminar
“Proper Assessment and Planning for Structural Renovations of Existing Buildings and Structures”

Spring 2007

General Society of Mechanics and Tradesmen
“Restoring 2 Skyscrapers, Empire State/Chrysler Building”


Structural Engineers Association of New York
“Practical Solutions to Building Envelope Problems – Local Law 11/98”, also presented at Buildings NY Conference in 2004 and NeoCon Trade Fair in 1999


American Society of Civil Engineer’s Forensic Engineering Symposium, with the Structural Engineering Institute Structures Congress
“A Case Study of Early Steel Curtain Wall: The Chrysler Building, New York, New York,” also presented at the Stainless Building Seminar in 2005 and 20th Century Exterior Architectural Metals Conference in 2003

Spring 2003

ProCon AIA
“Historic Roofing, Beyond the Basics”

Fall 2002

The History Channel
“Modern Marvels – The Chrysler Building” first broadcast October 2002

Fall 2001

Association of Preservation Technology Annual Conference
“Observations of Historic Structure’s Performance at the World Trade Center,” also given at RESTORE New York in 2002 and 2003


The Greater New York Construction User Council
“Local Law 11: A/E Process”

2001 & 2000

University of Hartford Construction Institute
“Roofing Systems: A Survey of the Basics and Some Special Cases”


MIT’s Technology and Conservation Conference
“Windows in Commercial Buildings/Skyscrapers: Case Histories on the Empire State and Chrysler Buildings”


Skyscraper Museum
“Exterior Restoration of the Chrysler Building: Fast-Tracking a Landmark”



Seventh Congress on Forensic Engineering, American Society of Civil Engineers
“Benefits of Helical Bar Reinforcing in Preserving Historic Masonry Facades” with Jared M. Shoemaker.


“Protection of Historic Urban Structures During Adjacent Construction” with Keith Kesner and Derek Trelstad.


Fourth Forensic Engineering Congress, American Society of Civil Engineers
“90 Feet – The Difference an Avenue Makes: Protection of Existing Historic Structures During Adjacent Construction” with Keith Kesner and Derek Trelstad.


“The Chrysler Building, A Case Study of Early Steel Curtain Wall”.