Facts & Figures: Construction

 
 
Prime Contract Awarded 3 August 1941
Mechanical Engineering Contract Awarded 9 March 1941
Construction Begins 11 September 1941
Grading Contract Awarded 24 September 1941
First Occupants Move In 29 April 1942
Construction Completed 15 January 1943
Pentagon Tours Established 17 May 1976
Congress passes control to Secretary of Defense 1 March 1991
Designated as Historic Landmark 1992
Pentagon Renovation Project (Wedges 1-5) 1991-2011
More Information Most of the statistical data presented here is approximate, even when the numbers are not rounded. Most of this data was compiled in the 1950s. Changes in the building since have resulted in changes in the numbers, making difficult to render precise figures.