Contractor Database

This consultant directory was created as a reference to general public and other government agencies seeking professional assistance of consultants with expertise in historic preservation. This directory does not claim to be all-inclusive, but does list all companies who submitted complete applications.

Disclaimer: Inclusion of a company in this directory does not constitute endorsement by DC Preservation League and the DC Historic Preservation Office. The organization is not a clearinghouse for job opportunities.  This directory is not to be used as an endorsement, or as a demonstration of professional competence, by any consultant.  It cannot and does not accept responsibility for the performance of any consultant.  This is not an “approved” list. Any company wishing to be included in this directly can complete the application form.

Any company wishing to be included in this directly can complete the application form. If all minimum requirements are met, they will be added to the directory.

106 Group
Richmond, VA
A.D. Marble & Company
Owings Mills, MD
Adams Morgan Stained Glass
Washington, DC
Aeon Preservation Services, LLC
Bladensburg, MD
American University
Washington, DC
Applied Archaeology & History Associates
Annapolis, MD
Artistic Doors and Windows
Avenel, NJ
Ball and Ball
Exton, PA
Bignell Watkins Hasser Architects, P.A.
Annapolis, MD
C. R. Bennett Construction Co.
Chester, MD
C. Richard Bierce, AIA
Alexandria, VA
Beltsville, MD
Cathedral Stone Products
Hanover, MD
Chaney Architects, Inc
Cumberland, MD
Clyde McHenry, Inc.
Hyattsville, MD
Coastal Carolina Research, Inc.
Tarboro, NC
Conservation of Sculpture & Objects Studio, Inc.
Forest Park, IL
Conservation Solutions, Inc.
District Heights, MD
Daedalus, Inc.
Watertown, MA
David H. Gleason Associates, Inc.
Baltimore, MD
Dovetail Cultural Resource Group
Fredericksburg, VA
Balitmore, MD
EHT Traceries, Inc.
Washington, DC
Encore Sustainable Design
Edgewater, Maryland
Environmental Resource Management Group Inc.
Washington, DC
Euro Sheet Metal
Crofton, MD
Fannin-Lehner Preservation Consultants
Concord, MA
Fine Art Conservation Group
New York, NY
Gaston & Wyatt
Charlottesville, VA
Gavin Historical Bricks
Iowa City, IA
Gibb Archaeological Consulting
Annapolis, MD
Gichner Iron Associates, Inc.
Beltsville, MD
Greenhorne & O’Mara, Inc.
Laurel, MD
GTM Architects, Inc.
Bethesda, MD
Hayles & Howe, Inc.
Baltimore, MD
HDR Environmental, Operations and Construction, Inc.
Vienna, VA
HEP Construction
Washington, DC
heritage Restoration
Hillsborough, NC
Higgins Quasebarth & Partners
New York, NY
History Matters, LLC
Washington, DC
Home Pro Roofing & Remodeling LLC
Crofton, MD
Hunter Research, Inc.
Trenton, NJ
ICON Architecture, Inc.
Boston, MA
Interstate Windows & Doors
Pittston, PA
James Thomas Wollon, Jr., AIA
Havre de Grace, MD
Jannsen design and Restoration
Washington, DC
Jim Evans
JL&S Building Services, Inc.
Washington, DC
John Canning & Company, Ltd.
Chershire, CT
John Milner Associates, Inc.
Alexandria, VA
Keystone Masonry Restoration
Keystone Preservation Group
Perkasie, PA
Landis Architect Build
Washington, DC
LaPorta Geological Consultants, L.L.C.
Goshen, NY
Majestic Builders
Washington, DC
Maral S. Kalbian, Architectural Historian
Boyce, VA
Marvin Commercial Products and Serices
Carlisle, PA
Mashack Frederick Iron Works
Washington, DC
Masonry Solutions International
Cockeysville, MD
McLean Stained Glass Studios
McLean, VA
Mead & Hunt
Madison, WI
Mozer Works, Inc.
Takoma Park, MD
Oak Grove Restoration Co.
Laytonsville, MD
pfb Consult, LLC
North Bethesda, MD
Powers & Company, Inc.
Philadelphia, PA
Quinn Evans Architects
Washington, DC
R. Christopher Goodwin & Assoc., Inc.
Frederick, MD
Renaissance Development, LLC
Washington, DC
Renew Restoration, Inc.
Baltimore, MD
Restoration Services
Brentwood, MD
Robert Wall and Associates, Inc.
Catonsville, MD
Robinson Iron Corp.
Alexandria City, AL
Ruff Roofers
Baltimore, MD
Schamu Machowski Greco Architects, Inc.
Baltimore, MD
Seekircher Steel Window Repair
Peekskill, NY
Stantec Consulting Services
Laurel, MD
Supreme Aluminum Products
Capitol Heights, MD
Susan Hillberg Architect
Washington, DC
Tetra Tech, Inc.
Fairfax, VA
The Carving and Restoration Team, Inc.
Manassas, VA
The Louis Berger Group, Inc.
Washington, DC
The Ottery Group, Inc.
Olney, MD
Thunderbird Archeology, a division of Wetland Studies and Solutions, Inc.
Gainesville, VA
Tompkins Thermo-Press
Bethesda, MD
Trionfo Builders, Inc.
Phoenix, MD
United Building Envelope Restoration
Manassas, VA
URS Corporation
Gaithersburg, MD
URS Corporation
Bethesda, MD
Vaughan Restoration Masonry, Inc.
Alexandria, VA
Versar, Inc.
Springfield, VA
Philadelphia, PA
Wagner Roofing Company
Hyattsville, MD
Beltsville, MD
Wiley & Wilson
Atlanta, GA
William & Mary Center for Archaeological Reasearch
Williamsburg, VA
Winmar Construction, Inc.
Washington, DC
Worcester Eisenbrandt, Inc.
Baltimore, MD
Z Construction
Washington, DC