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


Encore Sustainable Design

Near Annapolis Office:
2822 Solomons Island  Suite #201
Edgewater, MD 21037
301.965.0096


United Building Envelope Restoration

9204 Venture Court
Manassas Park, VA 20111
703.879.2426

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


Keast & Hood Company

350 Connecticut Avenue NW Suite #412
Washington, DC 20036
202.223.1941


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


EverGreene Architectural Arts

New York Office

450 West 31st Street, 7th Floor
New York, NY 10001-4608
212.244.2800


Historic Preservation Training Center

4801A Urbana Pike
Frederick, MD 21704
301.663.0856


Standard Restoration & Waterproofing

3005 Kaverton Road
Forestville, MD 20747
301.735.6434


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

 APT DC Friends


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


EYP Architecture & Engineering

1000 Potomac St. NW 
WashingtonDC 20007 
202.471.5000 


The Fred W. Smith National Library for the Study of George Washington

3200 Mount Vernon Memorial Highway
Mount Vernon, VA 22121 
703.780.2000


Grunley Construction Company, Inc.

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


George Washington's Mount Vernon

3200 Mount Vernon Memorial Highway
Mount Vernon, VA 22121 
703.780.2000


Manganaro Midatlantic LLC

6405D Ammendale Road 
Beltsville, MD 20705
301.937.0580


McMullan & Associates, Inc.

61861 Wiehle Ave #125 
Reston, VA 20190
703.556.0651


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


WSP Parsons Brinckerhoff

1099 14th St NW #101
Washington, DC
202.783.0241

Special thanks to our Individual APT DC Friend members: 

  • Ronda Bernstein
  • William Brenner
  • Megan Brown
  • Thomas Jester
  • Mary Oehrlein
  • 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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