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 Fast Facts for the Eisenhower Executive Office Building 1

Architectural Style French Second Empire
Construction Dates 1871 - 1888 (17 years total)
Supervising Architects Alfred Mullett (1869-1874), William Potter (1875-1875), Orville Babcock (1875-1877), Thomas Lincoln Casey (1877-1888)
Chief Designer Richard Ezdorf
Total Cost $10,038,482.42

Building Size:

Total Building Area 662,598 GSF (15.21 acres or 11 1/2 football fields)
Number of Levels Basement, Ground, Floors 1 through 5
Number of Rooms 553
Exterior Columns 900
Interior Doors 1,314
Exterior Windows 1,572
Bronze Stair Balusters 4,004
Number of Steps 1,784 (76 less than the Empire State Building with 1,860 steps)
Number of Stairs 65
Total Corridor Length 9,160'-1" or 1.73 miles (2.793 kilometers)
Number of Fireplaces 151 (83 remain)


  • Granite from Fox Islands, Maine used for courtyard walls and Basement and Ground floor exterior walls
  • Granite from Richmond, Virginia used for the exterior walls on floors 1 - 5
  • Exterior cast iron used for window frames, sculpture, 30 chimneys, cornices, and roof trim
  • Interior cast iron used for columns, pilasters, wall and floor panels, library bookshelves, and decorative trim
  • White marble floor tiles are from Vermont; Black floor tiles are limestone from New York
  • 8 granite staircases cantilevered from the wall
  • Existing marble or wood fireplaces originally used as decorative ventilation features not for heat

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