Mark Rabinowitz
AIC-Fellow | FAAR ‘011
Senior Vice President
+1 301 943 8249

Mark holds decades of experience in the assessment, testing and treatment of major historic and artistic works in the US, Canada and the Caribbean. First trained as a sculptor, he has worked on preservation of monuments, sculptures, historic structures, fountains, industrial artifacts, historic sites and collections.

Significant projects include assessments of the Carnegie Library, Washington, DC, assessment the Atlantis Space Shuttle and A-12 CIA spy plane, the assessment of the Egyptian Obelisk in New York City, treatments of bronze and marble at the US Capitol US, Dept of Commerce and US Supreme Court buildings, treatments of iron and aluminum at the US Dept. of Justice building, treatment of stone of the West Block of the Canadian Houses of Parliament., assessments and treatments of the Grant, Lincoln, and WWI Memorials on the National Mall, conservation of monuments in Arlington and other National Cemeteries around the country, restoration of major elements of Louis Comfort Tiffany’s Laurelton Hall, conservation of works for the Brooklyn, Metropolitan Museums in NYC the Smithsonian Institute and National Gallery of Art in Washington, DC, Crystal Bridges Museum, Morse Museum, the Biltmore Estate, Rockefeller’s Kykuit, Doris Duke’s Rough Point, Vizcaya Museum & Gardens and hundreds of other Federal, State and Local sites throughout North America.

Mark is a graduate of Rhode Island School of Design in Providence, RI, He holds a degree Bachelor of Fine Arts, Sculpture and worked as a sculptor for the first sixteen years of his career. Mark is a Fellow of the American Institute for Conservation (AIC) and Fellow of the American Academy in Rome.




  • Carnegie Library
    May 13, 2020 State Historic Preservation Officer's District of Columbia Award for Excellence
    DC Preservation League
  • By Difference engine
    Carnegie Library
    October 4, 2018 Restoration and Renovation
    American Architecture Awards
  • By Difference engine
    Carnegie Library
    October 15, 2020 Regional Best - Award of Merit Renovation/Restoration
    Engineering News-Record MidAtlantic
  • By Difference engine
    Carnegie Library
    February 2, 2019 Washington Contractor Award - Renovation / Restoration, $31-$50 Million
    Associated General Contractors of Washington DC
  • By Difference engine
    Carnegie Library
    March 10, 2020 CRP Build America Merit Award - Building Renovation $10 – 75 Million
    Associated General Contractors of America (AGC)
  • By Difference engine
    Carnegie Library
    May 1, 2020 Awards of Excellence - Best Historic Renovation
  • By Difference engine
    Carnegie Library
    April 1, 2020 Awards of Excellence - Best of Best, Buildings
  • Main entrance after restoration. Credit Joseph K. Oppermann Architects.
    St. Paul's Episcopal Church
    September 24, 2020 Gertrude S. Carraway Award of Merit
    Preservation North Carolina
  • Ringling Museum of Art - Ca'd'Zan
    May 18, 2019 Florida Preservation Awards
    Florida Historic Preservation Foundation
  • U.S. Capitol Stone and Metal Preservation, North Extension
    October 16, 2018 Award of Merit Government/Public Buildings
    Engineering News Record
  • House of Representatives, Kansas State Capitol
    January 1, 1999 Preservation Award
    Kansas Preservation Alliance
  • Egyptian Obelisk "Cleopatra's Needle", Central Park, New York, NY
    January 1, 2015 Lucy G. Moses Preservation Award
    New York Landmarks Conservancy
  • Cast Stone Conservation, Flagler Memorial Monument, FL
    January 1, 2009 Outstanding Restoration of Historic Site Award
    Florida Trust For Historic Preservation
  • Historic Industrial Artifacts, Allied Textile Printing, Paterson, NJ
    January 1, 2010 Historic Preservation Awards/Outstanding Public Archaeology
    Preservation New Jersey
  • Kansas State Capitol Senate Chamber, Topeka, KS
    January 1, 2014 Medallion Award for Excellence
    Kansas Preservation Alliance
  • Egyptian Obelisk "Cleopatra's Needle", Central Park, New York, NY
    January 1, 2014 Award For Excellence
    NYC Design Commission
  • U.S. Capitol North Extension Stone and Metal Preservation, Washington, DC
    January 1, 2018 Best Project Award
    ENR MidAtlantic


Dumbarton House Garden Niche
Homer's Lyre, Cleaning & Repair
Lockwood House
Rye Meeting House
U.S. Public Health Service Building
Pergola Dome Restoration
NASc Einstein Sculpture Maintenance
Memorial Belltower Tablet
St. Paul's Episcopal Church
Metronome - One Union Square
Stone & Metal Maintenance Manual
Jefferson Memorial
Navy Yard Building B
Orton Hall Extension Envelope Assessment
Chesapeake and Ohio Canal Bridge
Minnesota State Capitol Quadriga
Federal Building Limestone Facade Assessment
Vanguard II and Vanguard III Satellites
Macy's Eagle Base
Russell Senate Office Building
Metals Inventory & Conservation Study
West Virginia State Capitol Sculptures
Coral Gables Lampposts
Dumbarton Oaks Outdoor Assessment
Taft Bridge Lamposts
First Bank Tympanum
National Air & Space Museum Aircrafts
Lipton Cup
Art Museum Gallery Wood Floor Restoration
U.S. Capitol Plaster Sculptures
U.S. Holocaust Memorial Museum
Valley Forge Paint Analysis
Fleischmann Fountain
Emancipation Proclamation & Bethune Monuments
Buchanan Memorial & Serenity Statue
Cheekwood Fountain Treatment
Cornice Treatment
U.S. Capitol South Extension
South Extension Pediment Sculpture
North Extension Pediment Sculpture
Jenny Holzer Art Installation Relocation
Pool Protection
Marymoor Park Wooden Sculptures
Carnegie Library Façade Restoration
Rubens Gallery
Atlas Statue
Kansas State Capitol House & Senate Chambers
Kansas State Capitol
George Fink Studio Assessment
Light Dispelling Darkness Fountain
David Statue
Masonry Study At Former U.S. President Residence
Venus de' Medici Sculpture
Ringling Museum of Art - Ca' d'Zan
Historic Stone Fireplace Mantels
Iwo Jima Monument
Carnegie Library Condition Assessment
Ringling Museum of Art Historic Lanterns Treatment
McMillan Slow Sand Filtration Plant
Ringling Museum of Art Service Gates
Clement Meadmore's Curls Sculpture
Miami Beach Community Church Paint Analysis
Iron Gates Assessment
Miami Beach Community Church Assessment
Iwo Jima Monument Assessment
St. Thomas Altar
Saturn V Rocket Conservation & Display
Fort Christian
Central Park Egyptian Obelisk
Biltmore Estate Outdoor Sculpture Collection
Kansas State Capitol Architectural Metal
Sherman Memorial
Riverside Church
Art Deco Lead Fountain
Lead Sculptures Collection
Ulysses S. Grant Memorial
Isamu Noguchi's Slide Mantra Sculpture
Gabriel Loire Windows
Ximenez-Fatio House Museum
U.S. Capitol North Extension
Washington Square Arch
Neptune Fountain
Allied Textile Printing
Kansas State Capitol Senate Chamber
Tiffany's Daffodil Terrace & Fireplace
Flagler Memorial Monument
Coral Gables Museum
18th Century Brass Graphometer