National Postal Museum

Smithsonian Institution • Washington, DC

An Award-Winning Restoration of a Historic Landmark

The William H. Gross Stamp Gallery at the National Postal Museum is set in Washington, D.C.’s historic Postal Square building. The renovation and interior fit-out of the circa-1914 space created a 14,000-square-foot exhibition area that chronicles the first 100 years of U.S. postage stamp history. The LEED®-Gold project includes public and traveling exhibit space, educational space, and restoration of the historic postmaster suite. Mueller’s services included the replacement and reconfiguration of the entire electrical distribution system for the gallery, which accommodates the largest philatelic gallery in the world.


Cho Benn Holback + Associates

LEED Facts

Level: Gold
Type: LEED for CI
Status: Certified
Click here to view LEED Scorecard

LEED® Facts

National Postal Museum William H Gross Stamp Gallery

Washington, DC
LEED for Commercial Interiors

  • Category: 
  • Category: 
    Sustainable Sites
    14 / 21
  • Category: 
    Water Efficiency
    8 / 11
  • Category: 
    Energy & Atmosphere
    21 / 37
  • Category: 
    Material & Resources
    9 / 14
  • Category: 
    Indoor Environmental Quality
    11 / 25
  • Category: 
    Innovation in Design
    1 / 6
  • Category: 
    Regional Priority Credits
    3 / 4

Client History

2018: National Air and Space Museum Revitalization; Quinn Evans Architects
2018: National Air and Space Museum Udvar-Hazy Center Hangar Swing Space; Ayers Saint Gross
2016: Hirshhorn Conservation Laboratory; Cho Benn Holback + Associates
2014: National Air and Space Museum Exterior Envelope and HVAC Replacement Study; Quinn Evans Architects
2014: Freer Gallery of Art Auditorium Renovation; Cho Benn Holback + Associates
2013: National Postal Museum William H. Gross Stamp Gallery; Cho Benn Holback + Associates
2011: National Museum of Natural History East Wing HVAC Renovation; Quinn Evans Architects
2010: National Air and Space Museum Electrical Systems Replacement; Cho Benn Holback + Associates
2008: National Museum of Natural History Sant Ocean Hall; Quinn Evans Architects
2004: Osteoprep Lab Building Ventilation Study & Repairs; Cho Benn Holback + Associates
2002: Sackler Gallery Mezzanine; GWWO Architects
1987: National Air and Space Museum Third-Floor Renovation; RCG Architects
1987: Castle Building North Tower Expansion; RCG Architects
1987: Renwick Gallery - HVAC Analysis; RCG Architects
1986: Paul E. Garber Facility Preservation, Restoration & Storage Facility; RCG Architects
1986: National Museum of American History Engines of Change Exhibit; RCG Architects
1985: Arts & Industries Building Master Plan
1984: American Art Museum Lincoln Gallery
1980: Cooper-Hewitt Museum Environmental Controls & Electrical Systems Upgrades
1978: National Portrait Gallery HVAC Renovations

View additional Cultural, Museum, and Preservation projects