CURRENT PARTNERS- click the logo to go to the partner's website

Granite Partners


Beyer Blinder Belle Architects

3307 M Street NW #301
Washington, DC 20007
202.333.8000

Marble Partners


The Christman Company

1881 Campus Commons Drive
Suite 405
Reston, VA 20191-1519
703.740.5645


GWWO Inc./Architects

800 Wyman Park Drive
Baltimore, MD 21211
410.332.1009


EHT Traceries, Inc.

440 Massachusetts Avenue, NW
Washington, DC 20001
202.393.1199


Sandstone Partners


Aeon Preservation Services, LLC

4703 Annapolis Road
Bladensburg, MD 20710


Historic Preservation Training Center

4801A Urbana Pike
Frederick, MD 21704
301.663.0856


Citadel DCA LLC

4201 Massachusetts Avenue, NW, 1000E
Washington, DC 20016
202.820.3605


The Gilders' Studio Inc.

17636 Prince Edward Drive
Olney,  MD 20832
301.929.9450


Vertical Access, LLC

1053 31st Street NW
2nd Floor
Washington, DC 20006
202.298.7333


Davis Buckley Architects and Planners

1612 K Street NW
Suite 900
Washington, DC 20006
202.223.1234



Wiss, Janney, Elstner Associates, Inc.

2941 Fairview Park Drive, Suite 300
Falls Church, VA 22042 
703.641.4601

Limestone Partners


Barnes Vanze Architects Inc.

1000 Potomac Street NW
Suite L-2
Washington, DC 20007
202.337.7255

Cathedral Stone Products

7266 Park Circle Drive
Hanover, MD 21076

410.782.9150

Contracting Specialists Incorporated

5127 Berwyn Road
College Park, MD 20740

301.513.5226


Grunley Construction Company, Inc.

15020 Shady Grove Road, Suite 500
Rockville, MD 20850
240.399.2000


Summer Consultants, Inc.

7900 Westpark Drive, Suite A405
McLean, VA 22102
703.556.8820



Washington National Cathedral

3101 Wisconsin Avenue
Washington, DC 20016
202.537.6200


The Octagon Museum

1799 New York Ave NW
Washington, DC 20006
202.626.7439

Special thanks to our Individual APT DC Friend members: 

  • Ronda Bernstein
  • William Brenner
  • Megan Brown
  • Robert J. Hotes, AIA
  • Thomas Jester, AIA
  • Mary Oehrlein, FAIA
  • Christopher Sullivan
  • Ken Kealey
  • Larry Burkhardt
  • Shannon Cohalan
  • Daria Gasparini
  • Tobin Tracey

© 2017 The Association for Preservation Technology, Washington DC Chapter. All rights reserved.
APT DC is a 501(c)3 non-profit organization based in Washington, DC.

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